How popular is this St. Louis to Key Largo flight route?

The Lambert-St Louis to Key Largo flight path was viewed by 2 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What are the cheapest airlines to fly from St. Louis to Key Largo one-way?

For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $56. Users have also found prices from $60 and $125 on Frontier and American Airlines, respectively.

How recently were the St. Louis to Key Largo flight deals updated?

The St. Louis to Key Largo flight deals you see on this page were last updated on 4/27.

What are the most popular airlines that fly from St. Louis to Key Largo?

Consider American Airlines, Delta or Frontier when booking your flight. These represent the most popular airlines when flying from St. Louis to Key Largo.

What are the cheapest flights from St. Louis to Key Largo?

On average you can expect to pay $1,112 for a flight from St. Louis to Key Largo. The cheapest flight overall is $146 while the most popular route, (Lambert-St Louis - Miami) is currently priced at $168.

What are the most reliable airlines from St. Louis to Key Largo?

The top 3 most reliable airlines when flying from St. Louis to Key Largo are American Airlines (76%), Southwest (74%) and Qatar Airways (57%).

Can I find flights from St. Louis to Key Largo for under $200 on Cheapflights?

Yes, there are multiple flights from St. Louis to Key Largo for under $200. The cheapest flight booked recently is on Frontier for just $118, but on average you can expect to pay $188.

Are there nonstop flights from St. Louis to Key Largo for under $300 on Cheapflights?

Cheapflights has at least 20 direct flights from St. Louis to Key Largo under $300. A good price for a nonstop flight from St. Louis to Key Largo is less than $311.

Are there last-minute flights available from St. Louis to Key Largo for under $200?

There are currently 20+ open flights from St. Louis to Key Largo within the next 7 days for less than $200.

What airport do you fly from for flights from St. Louis to Key Largo?

For a flight from St. Louis to Key Largo, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 6 outbound flights to Key Largo per day. 7 airlines have flights to Key Largo from Lambert-St Louis on a regular basis.

What does STL to MIA mean?

Lambert-St Louis Airport is STL and Miami Airport is MIA. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Fort Lauderdale Airport (FLL), Key West Airport (EYW), Miami Opa Locka Airport (OPF), Fort Lauderdale Executive Airport (FXE).

Can I find deals for flights from St. Louis to Key Largo that include extra baggage allowance?

The amount of baggage you can bring on your St. Louis to Key Largo flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Can I find deals on flights from St. Louis to Key Largo with specific airlines?

Yes, Cheapflights allows you to browse and filter St. Louis to Key Largo flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

Can I find deals for flights from St. Louis to Key Largo that include hotel bookings?

Yes. In addition to deals on St. Louis to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to Key Largo?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Key Largo.

Can I find deals for business class flights from St. Louis to Key Largo?

Yes. Cheapflights offers flight deals from St. Louis to Key Largo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Can I find deals for flights from St. Louis to Key Largo that allow pets onboard?

Many airlines flying from St. Louis to Key Largo offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Can I find deals on last-minute flights from St. Louis to Key Largo?

Yes, you can often find last-minute deals on St. Louis to Key Largo flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

Flights from St. Louis, MO to Key Largo from $56

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

The best prices from Lambert-St Louis to Key Largo are usually found in September or January, booked 83 days in advance, depart on a Tuesday or Wednesday and return on a Saturday

Cheap flight deals from St. Louis to Key Largo

Popular in	March
Cheapest in	September
Round-trip from	$208
One-way from	$122

High demand for flights, 19% potential price rise

Search Deals

Best time to find cheap flights, 15% potential price drop

Search Deals

From Lambert-St Louis to Key Largo

Search Deals

One-way flight from Lambert-St Louis to Key Largo

Search Deals

How far in advance should I book a flight from St. Louis to Key Largo?

Users have found that booking a flight from St. Louis to Key Largo at least 57 days early can save you up to 86% on average compared to booking a flight this week. If booking 57 days before your flight isn’t an option for you, users have found flights from St. Louis to Key Largo for as little as $388 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $553 for flights departing within the next 3 days.

What is the cheapest month to fly from St. Louis to Key Largo?

September is one of the best times of the year to fly to Key Largo from St. Louis. Prices for September average $385 per person but you can even find prices for as low as $199. The most expensive prices can be found in the month of March. Opting for a September flight can save you 23% on your journey compared to booking in March

When is the cheapest time to fly from St. Louis to Key Largo (STL - KE9)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Key Largo as you normally would.

Cheap Frontier flights from St. Louis to Key Largo

Peruse some of the lowest-priced Frontier flights we've found from St. Louis to Key Largo. Deals update often to give you more flight options matching your criteria

Fri 5/178:45 pmSTL - MIA

1 stop8h 15mFrontier

Thu 5/237:30 amMIA - STL

1 stop15h 36mFrontier

Deal found 4/26$118

Thu 5/1611:06 pmSTL - MIA

1 stop24h 26mFrontier

Mon 5/207:35 amMIA - STL

1 stop30h 34mFrontier

Deal found 4/26$166

Thu 5/1611:06 pmSTL - MIA

1 stop29h 54mFrontier

Mon 5/202:47 pmMIA - STL

1 stop23h 22mFrontier

Deal found 4/26$178

Fri 5/178:45 pmSTL - MIA

1 stop8h 15mFrontier

Mon 5/202:47 pmMIA - STL

1 stop23h 22mFrontier

Deal found 4/25$179

Fri 5/35:35 pmSTL - MIA

1 stop11h 28mFrontier

Tue 5/79:45 pmMIA - STL

1 stop13h 02mFrontier

Deal found 4/26$188

Thu 5/1611:06 pmSTL - MIA

1 stop29h 54mFrontier

Thu 5/237:30 amMIA - STL

1 stop27h 06mFrontier

Deal found 4/27$197

Thu 5/2311:06 pmSTL - MIA

1 stop24h 26mFrontier

Thu 5/307:30 amMIA - STL

1 stop15h 36mFrontier

Deal found 4/26$199

Mon 8/268:00 pmSTL - MIA

1 stop27h 41mFrontier

Tue 9/33:21 pmMIA - STL

1 stop19h 16mFrontier

Deal found 4/26$204

Sun 5/1911:22 pmSTL - MIA

1 stop29h 38mFrontier

Mon 5/277:35 amMIA - STL

1 stop30h 34mFrontier

Deal found 4/26$209

Cheap Spirit Airlines flights from St. Louis to Key Largo

Have a look at some of the cheapest available Spirit Airlines flights departing from St. Louis and landing in Key Largo. Check back soon if you're not seeing flights that suit your needs.

Tue 5/710:34 amSTL - MIA

3 stops29h 37mSpirit Airlines

Tue 5/145:10 pmMIA - STL

1 stop18h 36mSpirit Airlines

Deal found 4/26$177

Sat 5/1111:39 amSTL - MIA

2 stops13h 01mSpirit Airlines

Tue 5/143:50 pmMIA - STL

2 stops19h 56mSpirit Airlines

Deal found 4/27$181

Tue 5/710:34 amSTL - MIA

3 stops29h 37mSpirit Airlines

Tue 5/147:30 pmMIA - STL

2 stops16h 16mSpirit Airlines

Deal found 4/26$182

Tue 5/710:34 amSTL - MIA

2 stops26h 13mSpirit Airlines

Tue 5/145:10 pmMIA - STL

1 stop18h 36mSpirit Airlines

Deal found 4/26$183

Tue 5/2110:34 amSTL - MIA

2 stops13h 58mSpirit Airlines

Wed 5/226:01 pmMIA - STL

3 stops25h 39mSpirit Airlines

Deal found 4/25$195

Tue 5/710:34 amSTL - MIA

3 stops29h 37mSpirit Airlines

Tue 5/1412:32 pmMIA - STL

3 stops23h 14mSpirit Airlines

Deal found 4/26$203

Tue 5/2110:34 amSTL - MIA

3 stops23h 01mSpirit Airlines

Wed 5/226:01 pmMIA - STL

3 stops25h 39mSpirit Airlines

Deal found 4/25$215

Sat 5/115:15 pmSTL - MIA

3 stops23h 54mSpirit Airlines

Sat 5/185:00 amMIA - STL

2 stops12h 25mSpirit Airlines

Deal found 4/26$238

Tue 5/2110:34 amSTL - MIA

2 stops13h 58mSpirit Airlines

Thu 5/236:40 amMIA - STL

2 stops11h 49mSpirit Airlines

Deal found 4/26$240

Cheap St. Louis to Key Largo flights in April & May 2024

The lowest fares we've come across on flights traveling from St. Louis to Key Largo in April and May 2024. For more flight deals, be sure to check back very soon.

Fri 5/178:45 pmSTL - MIA

1 stop8h 15mFrontier

Thu 5/237:30 amMIA - STL

1 stop15h 36mFrontier

Deal found 4/26$118

Thu 5/1611:06 pmSTL - MIA

1 stop24h 26mFrontier

Mon 5/207:35 amMIA - STL

1 stop30h 34mFrontier

Deal found 4/26$166

Tue 5/710:34 amSTL - MIA

3 stops29h 37mSpirit Airlines

Tue 5/145:10 pmMIA - STL

1 stop18h 36mSpirit Airlines

Deal found 4/26$177

Thu 5/1611:06 pmSTL - MIA

1 stop29h 54mFrontier

Mon 5/202:47 pmMIA - STL

1 stop23h 22mFrontier

Deal found 4/26$178

Fri 5/178:45 pmSTL - MIA

1 stop8h 15mFrontier

Mon 5/202:47 pmMIA - STL

1 stop23h 22mFrontier

Deal found 4/25$179

Sat 5/1111:39 amSTL - MIA

2 stops13h 01mSpirit Airlines

Tue 5/143:50 pmMIA - STL

2 stops19h 56mSpirit Airlines

Deal found 4/27$181

Tue 5/710:34 amSTL - MIA

3 stops29h 37mSpirit Airlines

Tue 5/147:30 pmMIA - STL

2 stops16h 16mSpirit Airlines

Deal found 4/26$182

Tue 5/710:34 amSTL - MIA

2 stops26h 13mSpirit Airlines

Tue 5/145:10 pmMIA - STL

1 stop18h 36mSpirit Airlines

Deal found 4/26$183

Tue 5/710:34 amSTL - MIA

3 stops29h 37mMultiple Airlines

Tue 5/146:20 amMIA - STL

2 stops15h 00mMultiple Airlines

Deal found 4/26$184

St. Louis to Key Largo 2024 flight deals

The lowest fares we've come across on flights traveling from St. Louis to Key Largo in April and May 2024. For more flight deals, be sure to check back very soon.

Fri 5/178:45 pmSTL - MIA

1 stop8h 15mFrontier

Thu 5/237:30 amMIA - STL

1 stop15h 36mFrontier

Deal found 4/26$118

Thu 5/1611:06 pmSTL - MIA

1 stop24h 26mFrontier

Mon 5/207:35 amMIA - STL

1 stop30h 34mFrontier

Deal found 4/26$166

Tue 5/710:34 amSTL - MIA

3 stops29h 37mSpirit Airlines

Tue 5/145:10 pmMIA - STL

1 stop18h 36mSpirit Airlines

Deal found 4/26$177

Thu 5/1611:06 pmSTL - MIA

1 stop29h 54mFrontier

Mon 5/202:47 pmMIA - STL

1 stop23h 22mFrontier

Deal found 4/26$178

Fri 5/178:45 pmSTL - MIA

1 stop8h 15mFrontier

Mon 5/202:47 pmMIA - STL

1 stop23h 22mFrontier

Deal found 4/25$179

Sat 5/1111:39 amSTL - MIA

2 stops13h 01mSpirit Airlines

Tue 5/143:50 pmMIA - STL

2 stops19h 56mSpirit Airlines

Deal found 4/27$181

Tue 5/710:34 amSTL - MIA

3 stops29h 37mSpirit Airlines

Tue 5/147:30 pmMIA - STL

2 stops16h 16mSpirit Airlines

Deal found 4/26$182

Tue 5/710:34 amSTL - MIA

2 stops26h 13mSpirit Airlines

Tue 5/145:10 pmMIA - STL

1 stop18h 36mSpirit Airlines

Deal found 4/26$183

Tue 5/710:34 amSTL - MIA

3 stops29h 37mMultiple Airlines

Tue 5/146:20 amMIA - STL

2 stops15h 00mMultiple Airlines

Deal found 4/26$184

Non-stop flights to Key Largo from St. Louis

For a quicker trip, book one of these direct flights from St. Louis to Key Largo. Search for alternative flights from St. Louis to Key Largo by utilizing the search form above.

Sat 8/245:31 amSTL - MIA

Nonstop2h 49mAmerican Airlines

Sat 8/319:00 pmMIA - STL

Nonstop3h 00mAmerican Airlines

Deal found 4/26$249

Tue 5/215:19 amSTL - MIA

Nonstop2h 46mAmerican Airlines

Wed 5/229:16 pmMIA - STL

Nonstop3h 03mAmerican Airlines

Deal found 4/25$253

Thu 8/295:31 amSTL - MIA

Nonstop2h 49mAmerican Airlines

Sat 9/149:00 pmMIA - STL

Nonstop3h 00mAmerican Airlines

Deal found 4/26$269

Tue 10/225:31 amSTL - MIA

Nonstop2h 49mAmerican Airlines

Sat 10/269:00 pmMIA - STL

Nonstop3h 00mAmerican Airlines

Deal found 4/26$273

Fri 6/215:00 amSTL - MIA

Nonstop2h 50mAmerican Airlines

Wed 6/269:22 pmMIA - STL

Nonstop3h 04mAmerican Airlines

Deal found 4/26$274

Sun 9/15:31 amSTL - MIA

Nonstop2h 49mAmerican Airlines

Sat 9/79:00 pmMIA - STL

Nonstop3h 00mAmerican Airlines

Deal found 4/26$279

Tue 5/215:19 amSTL - MIA

Nonstop2h 46mAmerican Airlines

Thu 5/239:16 pmMIA - STL

Nonstop3h 03mAmerican Airlines

Deal found 4/26$281

Thu 9/55:31 amSTL - MIA

Nonstop2h 49mAmerican Airlines

Mon 9/99:00 pmMIA - STL

Nonstop3h 00mAmerican Airlines

Deal found 4/27$289

Fri 9/65:31 amSTL - MIA

Nonstop2h 49mAmerican Airlines

Mon 9/99:00 pmMIA - STL

Nonstop3h 00mAmerican Airlines

Deal found 4/27$299

St. Louis to Key Largo flights leaving soon

Check out these flights departing soon from St. Louis to Key Largo. Users should examine the flight details to ensure there are no surprises.

Tue 5/710:34 amSTL - MIA

3 stops29h 37mSpirit Airlines

Tue 5/145:10 pmMIA - STL

1 stop18h 36mSpirit Airlines

Deal found 4/26$177

Tue 5/710:34 amSTL - MIA

3 stops29h 37mSpirit Airlines

Tue 5/147:30 pmMIA - STL

2 stops16h 16mSpirit Airlines

Deal found 4/26$182

Tue 5/710:34 amSTL - MIA

2 stops26h 13mSpirit Airlines

Tue 5/145:10 pmMIA - STL

1 stop18h 36mSpirit Airlines

Deal found 4/26$183

Tue 5/710:34 amSTL - MIA

3 stops29h 37mMultiple Airlines

Tue 5/146:20 amMIA - STL

2 stops15h 00mMultiple Airlines

Deal found 4/26$184

Fri 5/35:35 pmSTL - MIA

1 stop11h 28mFrontier

Tue 5/79:45 pmMIA - STL

1 stop13h 02mFrontier

Deal found 4/26$188

Tue 5/710:34 amSTL - MIA

2 stops26h 13mMultiple Airlines

Tue 5/146:20 amMIA - STL

2 stops15h 00mMultiple Airlines

Deal found 4/26$190

Tue 5/710:34 amSTL - MIA

3 stops29h 37mMultiple Airlines

Tue 5/143:50 pmMIA - STL

3 stops22h 10mMultiple Airlines

Deal found 4/26$198

Tue 5/710:34 amSTL - MIA

3 stops29h 37mSpirit Airlines

Tue 5/1412:32 pmMIA - STL

3 stops23h 14mSpirit Airlines

Deal found 4/26$203

Tue 5/712:00 pmSTL - MIA

2 stops12h 15mMultiple Airlines

Sat 5/117:04 pmMIA - STL

3 stops26h 16mMultiple Airlines

Deal found 4/26$221

One-way flights to Key Largo from St. Louis

Take a look at some of the best available options we've come across on one-way flights from St. Louis to Key Largo. Users needing a return flight from St. Louis to Key Largo should utilize the search form above.

Sat 5/1111:39 amSTL - MIA

2 stops11h 30mSpirit Airlines

Deal found 4/25$56

Thu 5/1611:06 pmSTL - MIA

1 stop24h 26mFrontier

Deal found 4/26$60

Tue 5/1410:34 amSTL - MIA

2 stops21h 17mSpirit Airlines

Deal found 4/25$77

Tue 5/710:34 amSTL - MIA

3 stops33h 23mSpirit Airlines

Deal found 4/26$79

Tue 5/142:35 pmSTL - MIA

3 stops32h 53mSpirit Airlines

Deal found 4/25$80

Tue 5/710:34 amSTL - MIA

3 stops26h 46mSpirit Airlines

Deal found 4/26$81

Tue 5/710:34 amSTL - MIA

2 stops26h 13mSpirit Airlines

Deal found 4/26$85

Sat 5/1111:39 amSTL - MIA

2 stops13h 01mSpirit Airlines

Deal found 4/26$86

Tue 5/2810:44 pmSTL - MIA

1 stop24h 48mFrontier

Deal found 4/26$90

Find flights from St. Louis to Key Largo within your budget

Fly from

Fly to

Budget

$118 - $258

Route

Depart

Return

Price

Lambert-St LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Fri 5/17

1 stop8h 15m

Miami

Thu 5/23

1 stop15h 36m

$118

Lambert-St LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Thu 5/16

1 stop24h 26m

Miami

Mon 5/20

1 stop30h 34m

$166

Lambert-St LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Tue 5/7

3 stops29h 37m

Miami

Tue 5/14

1 stop18h 36m

$177

Lambert-St LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Thu 5/16

1 stop29h 54m

Miami

Mon 5/20

1 stop23h 22m

$178

Lambert-St LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Sat 5/11

2 stops13h 01m

Miami

Tue 5/14

2 stops19h 56m

$181

Lambert-St LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Tue 5/7

3 stops29h 37m

Miami

Tue 5/14

2 stops15h 00m

$184

Lambert-St LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Tue 5/7

2 stops26h 13m

Miami

Tue 5/14

2 stops15h 00m

$190

Lambert-St LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Tue 5/21

Nonstop2h 46m

Miami

Wed 5/22

Nonstop3h 03m

$253

Lambert-St LouisMiami

STL - MIA

STLMIA

Lambert-St Louis

Sun 6/23

1 stop6h 31m

Miami

Fri 6/28

1 stop4h 10m

$258

Flights are sorted by cheapest first

Deals found on 4/26

When is the best time to book a flight from St. Louis to Key Largo?

To ensure you get the cheapest price possible for a flight from St. Louis to Key Largo, you should look to book at least 83 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Search Deals

When is the cheapest time to fly from St. Louis to Key Largo?

Morning

Noon

Afternoon

Evening

All times are departure.

Travelers seeking maximum savings on their St. Louis to Key Largo flight should consider departing on Tuesday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Search Deals

Average price of flights to Key Largo by month

Currently, September is the cheapest month in which you can book a flight from St. Louis to Key Largo (average of $208). Flying from St. Louis to Key Largo in March is currently the most expensive (average of $290). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$221

February

$235

March

$290

April

$263

May

$250

June

$271

July

$287

August

$241

September

$208

October

$230

November

$258

December

$258

Temperature and rainfall in Key Largo by month

MIA Temperature	68 - 84.2 °F

MIA

Temperature

68 - 84.2 °F

Reviews of airlines servicing Key Largo

Peruse reviews from past customers who have flown with Frontier, Spirit Airlines and American Airlines from St. Louis to Key Largo to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.1

Very good

10,951 reviews

Check prices

Reviews

1 / 10

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.

Delta

8.1

Very good

10,951 reviews

Delta

8.1

Very good

10,951 reviews

Check prices

Reviews

1 / 10

United Airlines

7.4

Good

11,228 reviews

Delta

8.1

Very good

10,951 reviews

Check prices

Reviews

1 / 10

American Airlines

7.3

Good

14,875 reviews

Delta

8.1

Very good

10,951 reviews

Check prices

Reviews

1 / 10

Sun Country Air

7.3

Good

657 reviews

Delta

8.1

Very good

10,951 reviews

Check prices

Reviews

1 / 10

Spirit Airlines

6.4

Okay

8,743 reviews

Delta

8.1

Very good

10,951 reviews

Check prices

Reviews

1 / 10

Related info for your journey

What airport do you fly from for flights from St. Louis to Key Largo?
For a flight from St. Louis to Key Largo, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 6 outbound flights to Key Largo per day. 7 airlines have flights to Key Largo from Lambert-St Louis on a regular basis.
Can I find flights from St. Louis to Key Largo for under $200 on Cheapflights?
Yes, there are multiple flights from St. Louis to Key Largo for under $200. The cheapest flight booked recently is on Frontier for just $118, but on average you can expect to pay $188.
Are there nonstop flights from St. Louis to Key Largo for under $300 on Cheapflights?
Cheapflights has at least 20 direct flights from St. Louis to Key Largo under $300. A good price for a nonstop flight from St. Louis to Key Largo is less than $311.
Are there last-minute flights available from St. Louis to Key Largo for under $200?
There are currently 20+ open flights from St. Louis to Key Largo within the next 7 days for less than $200.
How popular is this St. Louis to Key Largo flight route?
The Lambert-St Louis to Key Largo flight path was viewed by 2 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
What are the cheapest airlines to fly from St. Louis to Key Largo one-way?
For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $56. Users have also found prices from $60 and $125 on Frontier and American Airlines, respectively.
What are the most popular airlines that fly from St. Louis to Key Largo?
Consider American Airlines, Delta or Frontier when booking your flight. These represent the most popular airlines when flying from St. Louis to Key Largo.
What are the most reliable airlines from St. Louis to Key Largo?
The top 3 most reliable airlines when flying from St. Louis to Key Largo are American Airlines (76%), Southwest (74%) and Qatar Airways (57%).
What are the cheapest flights from St. Louis to Key Largo?
On average you can expect to pay $1,112 for a flight from St. Louis to Key Largo. The cheapest flight overall is $146 while the most popular route, (Lambert-St Louis - Miami) is currently priced at $168.
What does STL to MIA mean?
Lambert-St Louis Airport is STL and Miami Airport is MIA. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Fort Lauderdale Airport (FLL), Key West Airport (EYW), Miami Opa Locka Airport (OPF), Fort Lauderdale Executive Airport (FXE).
Can I find deals for flights from St. Louis to Key Largo that include extra baggage allowance?
The amount of baggage you can bring on your St. Louis to Key Largo flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.
Can I find deals on flights from St. Louis to Key Largo with specific airlines?
Yes, Cheapflights allows you to browse and filter St. Louis to Key Largo flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.
Can I find deals for flights from St. Louis to Key Largo that include hotel bookings?
Yes. In addition to deals on St. Louis to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Key Largo?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Key Largo.
Can I find deals for business class flights from St. Louis to Key Largo?
Yes. Cheapflights offers flight deals from St. Louis to Key Largo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
Can I find deals for flights from St. Louis to Key Largo that allow pets onboard?
Many airlines flying from St. Louis to Key Largo offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.
Can I find deals on last-minute flights from St. Louis to Key Largo?
Yes, you can often find last-minute deals on St. Louis to Key Largo flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.
How recently were the St. Louis to Key Largo flight deals updated?
The St. Louis to Key Largo flight deals you see on this page were last updated on 4/27.

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Complete your trip
Complete your trip to Key Largo by adding a car rental and/or hotel reservation to your travel itinerary.

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Top 7 airlines flying from St. Louis to Key Largo

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$70	Average$179	FlexibilityNo cancel fee	On-time65%	Search Spirit Airlines flights
Frontier	Cheapest$159	Average$205	FlexibilityNo cancel fee	On-time62%	Search Frontier flights
American Airlines	Cheapest$226	Average$407	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Sun Country Air	Cheapest$254	Average$607	FlexibilityNo cancel fee	On-time83%	Search Sun Country Air flights
Delta	Cheapest$271	Average$430	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
United Airlines	Cheapest$299	Average$541	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
JetBlue	Cheapest$336	Average$419	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights

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Search flights from St. Louis to Key Largo by cabin class

Hourly flight availability from St. Louis to Key Largo

52%of flight departures	Early morningMidnight to 6 am
27%of flight departures	Morning6 am to noon
21%of flight departures	AfternoonNoon to 6 pm
0%of flight departures	Evening6 pm to midnight

Midnight

6 AM

Noon

6 PM

Weekly flight availability from St. Louis to Key Largo

Sunday	6daily flights
Monday	7daily flights
Tuesday	7daily flights
Wednesday	7daily flights
Thursday	7daily flights
Friday	7daily flights
Saturday	6daily flights

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Yes, we can. To see specific flights from St. Louis to Key Largo with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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Cheap flights from St. Louis (STL) to Key Largo, FL from $56

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.

The best prices from Lambert-St Louis to Key Largo are usually found in September or January, booked 83 days in advance, depart on a Tuesday or Wednesday and return on a Saturday

Cheap flight deals from St. Louis to Key Largo

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How far in advance should I book a flight from St. Louis to Key Largo?

What is the cheapest month to fly from St. Louis to Key Largo?

When is the cheapest time to fly from St. Louis to Key Largo (STL - KE9)?

Cheap Frontier flights from St. Louis to Key Largo

Peruse some of the lowest-priced Frontier flights we've found from St. Louis to Key Largo. Deals update often to give you more flight options matching your criteria

Cheap Spirit Airlines flights from St. Louis to Key Largo

Have a look at some of the cheapest available Spirit Airlines flights departing from St. Louis and landing in Key Largo. Check back soon if you're not seeing flights that suit your needs.

Cheap St. Louis to Key Largo flights in April & May 2024

Find cheap flight options from St. Louis to Key Largo specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,991,349 searches. Prices were last updated on April 27, 2024.

The lowest fares we've come across on flights traveling from St. Louis to Key Largo in April and May 2024. For more flight deals, be sure to check back very soon.

St. Louis to Key Largo 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Key Largo in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 27, 2024.

The lowest fares we've come across on flights traveling from St. Louis to Key Largo in April and May 2024. For more flight deals, be sure to check back very soon.

Non-stop flights to Key Largo from St. Louis

For a quicker trip, book one of these direct flights from St. Louis to Key Largo. Search for alternative flights from St. Louis to Key Largo by utilizing the search form above.

St. Louis to Key Largo flights leaving soon

Check out these flights departing soon from St. Louis to Key Largo. Users should examine the flight details to ensure there are no surprises.

One-way flights to Key Largo from St. Louis

Take a look at some of the best available options we've come across on one-way flights from St. Louis to Key Largo. Users needing a return flight from St. Louis to Key Largo should utilize the search form above.

Find flights from St. Louis to Key Largo within your budget

When is the best time to book a flight from St. Louis to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Key Largo. Price data was last updated on January 28, 2024.

To ensure you get the cheapest price possible for a flight from St. Louis to Key Largo, you should look to book at least 83 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

When is the cheapest time to fly from St. Louis to Key Largo?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Key Largo. Price data was last updated on April 21, 2024.

Average price of flights to Key Largo by month

Plan your trip from St. Louis to Key Largo by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Key Largo is currently $77 while a round-trip flight costs $189. Price data was last updated on April 21, 2024.

Temperature and rainfall in Key Largo by month

Plan your trip to Key Largo by taking into account the average temperature and rainfall totals by month.

Reviews of airlines servicing Key Largo

Peruse reviews from past customers who have flown with Frontier, Spirit Airlines and American Airlines from St. Louis to Key Largo to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Key Largo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from St. Louis to Key Largo?

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Can I find deals for flights from St. Louis to Key Largo that allow pets onboard?

Can I find deals on last-minute flights from St. Louis to Key Largo?

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Top 7 airlines flying from St. Louis to Key Largo

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Search flights from St. Louis to Key Largo by cabin class

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Hourly flight availability from St. Louis to Key Largo

Find hourly flight availability from St. Louis to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 27, 2024.

Weekly flight availability from St. Louis to Key Largo

Explore weekly flight availability from St. Louis to Key Largo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 27, 2024.

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User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations

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Can Cheapflights notify me if prices for flights from St. Louis to Key Largo become cheaper?

Alternative routes for St. Louis to Key Largo
See prices for flight routes from nearby airports that may be better suited for you.