Cheap flights from Buffalo to St. Louis (BUF - STL) from $123

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 7/17. 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.
BUF — STL
May 3 — May 101

The best prices from Buffalo to Lambert-St Louis are usually found in October or January, booked 39 days in advance, depart on a Sunday or Thursday and return on a Wednesday

Cheap flight deals from Buffalo to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 28, 2024.

Popular in

March

Cheapest in

October

Round-trip from

$323

One-way from

$126
High demand for flights, 17% potential price rise
Best time to find cheap flights, 21% potential price drop
From Buffalo to Lambert-St Louis
One-way flight from Buffalo to Lambert-St Louis

What is the cheapest day to fly round-trip from Buffalo to St. Louis?

Friday flights are found to be more expensive to fly from Buffalo to St. Louis. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to St. Louis.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 40 days in advance, which can save you up to 238% on flights from Buffalo to St. Louis compared to booking the week you need them. Waiting 40 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $231. For sooner than that we have options available in the next 3 days from $502.

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

Due to multiple factors, expect to potentially pay more when booking in March. For low rates, October can be a great choice for travel to St. Louis. Flights to St. Louis from Buffalo in October are about $380 on average during October, but can be found for as low as $205.

When is the cheapest time to fly from Buffalo to St. Louis (BUF - STL)?

One of the essential ways to save on airfare from Buffalo to St. Louis is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 9% on airfare.

Cheap Frontier flights from Buffalo to St. Louis

Explore cheap flight options specifically provided by Frontier for the route between Buffalo and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
Consider these cheap Frontier flights we've found departing from Buffalo to St. Louis. It's recommended that users confirm their flight details before booking.
Wed 5/2911:24 amBUF - STL
1 stop9h 46mFrontier
Sun 6/211:22 pmSTL - BUF
1 stop16h 03mFrontier
Deal found 4/27$158
Sat 5/48:38 pmBUF - STL
1 stop11h 35mFrontier
Wed 5/89:53 pmSTL - BUF
1 stop8h 53mFrontier
Deal found 4/26$177
Thu 6/277:55 pmBUF - STL
1 stop12h 13mFrontier
Sat 6/2912:03 pmSTL - BUF
1 stop7h 14mFrontier
Deal found 4/27$206
Mon 5/67:02 pmBUF - STL
1 stop21h 48mFrontier
Wed 5/89:53 pmSTL - BUF
1 stop8h 53mFrontier
Deal found 4/28$208
Fri 5/311:08 amBUF - STL
1 stop23h 39mFrontier
Sun 5/53:29 pmSTL - BUF
1 stop25h 33mFrontier
Deal found 4/27$269
Wed 5/89:43 pmBUF - STL
1 stop13h 55mFrontier
Sun 5/123:29 pmSTL - BUF
1 stop25h 33mFrontier
Deal found 4/27$348

Cheap United Airlines flights from Buffalo to St. Louis

Explore cheap flight options specifically provided by United Airlines for the route between Buffalo and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
Have a look at some of the cheapest available United Airlines flights departing from Buffalo and landing in St. Louis. Make sure to examine the flight information before completing your reservation.
Thu 9/267:00 amBUF - STL
1 stop4h 07mUnited Airlines
Sat 9/2811:09 amSTL - BUF
2 stops10h 49mUnited Airlines
Deal found 4/28$479
Sat 5/45:55 pmBUF - STL
1 stop4h 54mUnited Airlines
Wed 5/811:10 amSTL - BUF
2 stops11h 13mUnited Airlines
Deal found 4/27$487
Mon 5/67:00 amBUF - STL
1 stop4h 14mUnited Airlines
Wed 5/811:10 amSTL - BUF
2 stops11h 13mUnited Airlines
Deal found 4/28$525
Mon 5/62:30 pmBUF - STL
2 stops8h 25mUnited Airlines
Wed 5/811:10 amSTL - BUF
2 stops11h 13mUnited Airlines
Deal found 4/28$753

Cheap Buffalo to St. Louis flights in April & May 2024

Find cheap flight options from Buffalo to St. Louis 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 28, 2024.
Check out some of the best flight deals from Buffalo to St. Louis in 2024. Check back regularly for other flight deals.
Wed 5/2911:24 amBUF - STL
1 stop9h 46mFrontier
Sun 6/211:22 pmSTL - BUF
1 stop16h 03mFrontier
Deal found 4/27$158
Sat 5/48:38 pmBUF - STL
1 stop11h 35mFrontier
Wed 5/89:53 pmSTL - BUF
1 stop8h 53mFrontier
Deal found 4/26$177
Mon 5/67:02 pmBUF - STL
1 stop21h 48mFrontier
Wed 5/89:53 pmSTL - BUF
1 stop8h 53mFrontier
Deal found 4/28$208
Fri 5/311:08 amBUF - STL
1 stop23h 39mFrontier
Sun 5/53:29 pmSTL - BUF
1 stop25h 33mFrontier
Deal found 4/27$269
Tue 5/286:08 amBUF - STL
1 stop6h 45mAmerican Airlines
Fri 5/314:20 pmSTL - BUF
1 stop7h 12mAmerican Airlines
Deal found 4/27$334
Wed 5/89:43 pmBUF - STL
1 stop13h 55mFrontier
Sun 5/123:29 pmSTL - BUF
1 stop25h 33mFrontier
Deal found 4/27$348
Thu 5/96:00 amBUF - STL
1 stop4h 53mAmerican Airlines
Sun 5/125:55 amSTL - BUF
1 stop4h 00mAmerican Airlines
Deal found 4/27$422
Sat 5/45:55 pmBUF - STL
1 stop4h 54mUnited Airlines
Wed 5/811:10 amSTL - BUF
2 stops11h 13mUnited Airlines
Deal found 4/27$487
Sat 5/45:25 amBUF - STL
2 stops12h 19mDelta
Wed 5/812:53 pmSTL - BUF
1 stop4h 32mDelta
Deal found 4/26$489

Buffalo to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Buffalo and St. Louis 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 28, 2024.
Check out some of the best flight deals from Buffalo to St. Louis in 2024. Check back regularly for other flight deals.
Wed 5/2911:24 amBUF - STL
1 stop9h 46mFrontier
Sun 6/211:22 pmSTL - BUF
1 stop16h 03mFrontier
Deal found 4/27$158
Sat 5/48:38 pmBUF - STL
1 stop11h 35mFrontier
Wed 5/89:53 pmSTL - BUF
1 stop8h 53mFrontier
Deal found 4/26$177
Thu 6/277:55 pmBUF - STL
1 stop12h 13mFrontier
Sat 6/2912:03 pmSTL - BUF
1 stop7h 14mFrontier
Deal found 4/27$206
Mon 5/67:02 pmBUF - STL
1 stop21h 48mFrontier
Wed 5/89:53 pmSTL - BUF
1 stop8h 53mFrontier
Deal found 4/28$208
Thu 9/266:52 amBUF - STL
1 stop9h 40mAmerican Airlines
Sat 9/287:30 amSTL - BUF
1 stop7h 17mAmerican Airlines
Deal found 4/28$222
Fri 5/311:08 amBUF - STL
1 stop23h 39mFrontier
Sun 5/53:29 pmSTL - BUF
1 stop25h 33mFrontier
Deal found 4/27$269
Thu 7/1812:42 pmBUF - STL
1 stop4h 30mAmerican Airlines
Mon 7/226:08 amSTL - BUF
1 stop4h 49mAmerican Airlines
Deal found 4/27$296
Tue 5/286:08 amBUF - STL
1 stop6h 45mAmerican Airlines
Fri 5/314:20 pmSTL - BUF
1 stop7h 12mAmerican Airlines
Deal found 4/27$334
Wed 5/89:43 pmBUF - STL
1 stop13h 55mFrontier
Sun 5/123:29 pmSTL - BUF
1 stop25h 33mFrontier
Deal found 4/27$348

Buffalo to St. Louis flights leaving soon

Find last-minute flight options from Buffalo to St. Louis for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
Users seeking a last-minute flight from Buffalo to St. Louis should consider booking one of these fares. It's wise to confirm all flight details are correct before booking.
Sat 5/48:38 pmBUF - STL
1 stop11h 35mFrontier
Wed 5/89:53 pmSTL - BUF
1 stop8h 53mFrontier
Deal found 4/26$177
Mon 5/67:02 pmBUF - STL
1 stop21h 48mFrontier
Wed 5/89:53 pmSTL - BUF
1 stop8h 53mFrontier
Deal found 4/28$208
Fri 5/311:08 amBUF - STL
1 stop23h 39mFrontier
Sun 5/53:29 pmSTL - BUF
1 stop25h 33mFrontier
Deal found 4/27$269
Wed 5/89:43 pmBUF - STL
1 stop13h 55mFrontier
Sun 5/123:29 pmSTL - BUF
1 stop25h 33mFrontier
Deal found 4/27$348
Sat 5/45:55 pmBUF - STL
1 stop4h 54mUnited Airlines
Wed 5/811:10 amSTL - BUF
2 stops11h 13mUnited Airlines
Deal found 4/27$487
Sat 5/45:25 amBUF - STL
2 stops12h 19mDelta
Wed 5/812:53 pmSTL - BUF
1 stop4h 32mDelta
Deal found 4/26$489
Mon 5/67:00 amBUF - STL
1 stop4h 14mUnited Airlines
Wed 5/811:10 amSTL - BUF
2 stops11h 13mUnited Airlines
Deal found 4/28$525
Wed 5/86:08 amBUF - STL
2 stops10h 27mAmerican Airlines
Sun 5/125:55 amSTL - BUF
1 stop4h 00mAmerican Airlines
Deal found 4/27$561
Fri 5/310:38 amBUF - STL
1 stop6h 05mAmerican Airlines
Sun 5/55:51 amSTL - BUF
2 stops9h 11mAmerican Airlines
Deal found 4/27$599

One-way flights to St. Louis from Buffalo

Search for one-way flight options from Buffalo to St. Louis. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
If you're seeking multiple options on one-way flights from Buffalo to St. Louis, be sure to check out these deals, which are updated often. For those needing a return trip from Buffalo, there is a search form available above.
Wed 7/176:05 amBUF - STL
1 stop7h 14mDelta
Deal found 4/27$123
Sat 6/159:07 pmBUF - STL
1 stop11h 01mFrontier
Deal found 4/27$126
Tue 7/166:00 amBUF - STL
1 stop6h 46mDelta
Deal found 4/27$148
Sat 6/1511:31 amBUF - STL
2 stops8h 58mAmerican Airlines
Deal found 4/27$293
Tue 7/166:10 pmBUF - STL
2 stops17h 20mAmerican Airlines
Deal found 4/27$300
Wed 7/175:34 amBUF - STL
2 stops15h 46mAmerican Airlines
Deal found 4/27$330

Find flights from Buffalo to St. Louis within your budget

Customize your flight search to find flights from Buffalo to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$158 - $657

Route

Depart

Return

Price

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Wed 5/29

1 stop9h 46m

Lambert-St Louis

Sun 6/2

1 stop16h 03m

$158

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Thu 6/27

1 stop12h 13m

Lambert-St Louis

Sat 6/29

1 stop7h 14m

$206

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Thu 9/26

1 stop9h 40m

Lambert-St Louis

Sat 9/28

1 stop7h 17m

$222

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Thu 7/18

1 stop4h 30m

Lambert-St Louis

Mon 7/22

1 stop4h 49m

$296

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Tue 5/28

1 stop6h 45m

Lambert-St Louis

Fri 5/31

1 stop7h 12m

$334

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Wed 5/8

1 stop13h 55m

Lambert-St Louis

Sun 5/12

1 stop25h 33m

$348

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Thu 5/9

1 stop4h 53m

Lambert-St Louis

Sun 5/12

1 stop4h 00m

$422

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Thu 9/26

1 stop4h 07m

Lambert-St Louis

Sat 9/28

2 stops10h 49m

$479

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Thu 6/27

3 stops25h 16m

Lambert-St Louis

Sat 6/29

3 stops23h 17m

$657

Flights are sorted by cheapest first

Deals found on 4/27

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

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to St. Louis. Price data was last updated on January 28, 2024.
The best time to book flights from Buffalo to St. Louis is 39 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search Deals

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

Use this chart to determine the cheapest time to fly round-trip from Buffalo to St. Louis. Price data was last updated on April 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Buffalo to St. Louis flight should consider departing on Thursday afternoons when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to St. Louis by month

Plan your trip from Buffalo to St. Louis by taking into account the cheapest months to travel. The average price of a one-way flight from Buffalo to St. Louis is currently $220 while a round-trip flight costs $347. Price data was last updated on April 21, 2024.

Currently, September is the cheapest month in which you can book a flight from Buffalo to St. Louis (average of $323). Flying from Buffalo to St. Louis in July is currently the most expensive (average of $378). 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

$326

February

$331

March

$357

April

$337

May

$350

June

$373

July

$378

August

$336

September

$323

October

$323

November

$336

December

$326

Temperature and rainfall in St. Louis by month

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

STL

Temperature

32 - 80.6 °F

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated April 28, 2024.
Read through reviews of airlines operating flights from Buffalo to St. Louis, such as Frontier, United Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
10,932 reviews

Overall

8.1

Food

7.4

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Reviews

1 / 10

In the boarding area at La Guardia, there are charging stations for electronics but the electric outlets do not work on many of the stations.

8.1
Very good
10,932 reviews
8.1
Very good
10,932 reviews

Overall

8.1

Food

7.4

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Reviews

1 / 10

In the boarding area at La Guardia, there are charging stations for electronics but the electric outlets do not work on many of the stations.

7.4
Good
11,221 reviews
8.1
Very good
10,932 reviews

Overall

8.1

Food

7.4

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Reviews

1 / 10

In the boarding area at La Guardia, there are charging stations for electronics but the electric outlets do not work on many of the stations.

7.3
Good
14,844 reviews
8.1
Very good
10,932 reviews

Overall

8.1

Food

7.4

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Reviews

1 / 10

In the boarding area at La Guardia, there are charging stations for electronics but the electric outlets do not work on many of the stations.

6.3
Okay
4,129 reviews
8.1
Very good
10,932 reviews

Overall

8.1

Food

7.4

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Crew

8.6

Reviews

1 / 10

In the boarding area at La Guardia, there are charging stations for electronics but the electric outlets do not work on many of the stations.

Related info for your journey

Find useful and relevant information for your journey from Buffalo to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • Can I find flights from Buffalo to St. Louis for under $200 on Cheapflights?

    Yes, there are multiple flights from Buffalo to St. Louis for under $200. The cheapest flight booked recently is on Frontier for just $158, but on average you can expect to pay $516.

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

    There are currently 12+ open flights from Buffalo to St. Louis within the next 7 days for less than $200.

  • What are the cheapest airlines flying from Buffalo to St. Louis round-trip?

    Our cheapest airline available from Buffalo to St. Louis is Frontier. Our recent data shows that you can find tickets from as low as $158 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $222 and $479 round-trip. Frontier is currently priced 58% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Buffalo to St. Louis one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $123. Frontier flights start at $126 while deals on American Airlines start at $293 one-way.

  • What are the most popular airlines that fly from Buffalo to St. Louis?

  • What does BUF to STL mean?

    This is defined as Buffalo Airport (BUF) and Lambert-St Louis Airport (STL). Codes like Lambert-St Louis Airport are often used to just call airports uniquely.

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

    The amount of baggage you can bring on your Buffalo to St. Louis 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 Buffalo to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Buffalo to St. Louis 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 Buffalo to St. Louis that include hotel bookings?

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

  • How can I find direct flights from Buffalo to St. Louis?

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

  • Can I find deals for business class flights from Buffalo to St. Louis?

    Yes. Cheapflights offers flight deals from Buffalo to St. Louis 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 Buffalo to St. Louis that allow pets onboard?

    Many airlines flying from Buffalo to St. Louis 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 Buffalo to St. Louis?

    Yes, you can often find last-minute deals on Buffalo to St. Louis 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 Buffalo to St. Louis flight deals updated?

    The Buffalo to St. Louis flight deals you see on this page were last updated on 4/28.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Buffalo to St. Louis

Discover the top 4 airlines that operate flights from Buffalo to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated April 28, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$122Average$238FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapest$261Average$360FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$274Average$384FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$333Average$414FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Search flights from Buffalo to St. Louis by cabin class

Find flights from Buffalo to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Buffalo to St. Louis?

Deals for Buffalo to St. Louis flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Buffalo to St. Louis?

Cheapflights simply makes it quick and affordable to book flights from Buffalo to St. Louis by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Buffalo to St. Louis with no change fees?

Certainly. Search results for flights to St. Louis from Buffalo shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes! Start tracking prices for Buffalo to St. Louis flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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