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Cheap flights from Buffalo to St. Louis (BUF - STL) from $148

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/28. 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 7 — May 141
From?
To?
Tue 5/7
Tue 5/14
1 adult, Economy
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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 Friday 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 May 2, 2024.

Popular in

March

Cheapest in

October

Round-trip from

$322

One-way from

$165
High demand for flights, 17% potential price rise
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Best time to find cheap flights, 21% potential price drop
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From Buffalo to Lambert-St Louis
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One-way flight from Buffalo to Lambert-St Louis
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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 2,899,487 searches. Data last updated May 2, 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 8/289:19 pmBUF - STL
1 stop10h 43mFrontier
Tue 9/310:32 pmSTL - BUF
1 stop18h 14mFrontier
Deal found 4/30$148
Thu 8/299:19 pmBUF - STL
1 stop10h 43mFrontier
Tue 9/310:32 pmSTL - BUF
1 stop18h 14mFrontier
Deal found 4/30$172
Fri 5/317:07 pmBUF - STL
1 stop15h 18mFrontier
Sun 6/27:44 pmSTL - BUF
1 stop11h 03mFrontier
Deal found 4/30$190
Mon 5/138:45 amBUF - STL
1 stop12h 26mFrontier
Thu 5/1611:06 pmSTL - BUF
1 stop18h 01mFrontier
Deal found 4/30$196
Wed 5/89:43 pmBUF - STL
1 stop13h 55mFrontier
Sun 5/127:16 pmSTL - BUF
1 stop11h 39mFrontier
Deal found 5/1$204
Mon 5/205:25 pmBUF - STL
1 stop20h 44mFrontier
Thu 5/2311:06 pmSTL - BUF
1 stop18h 01mFrontier
Deal found 5/1$233
Mon 6/245:52 pmBUF - STL
1 stop21h 55mFrontier
Sat 6/2912:03 pmSTL - BUF
1 stop7h 14mFrontier
Deal found 4/30$278
Thu 5/98:46 amBUF - STL
1 stop23h 27mFrontier
Sun 5/127:16 pmSTL - BUF
1 stop11h 39mFrontier
Deal found 5/1$298

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 2,899,487 searches. Data last updated May 2, 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.
Wed 8/2810:53 amBUF - STL
1 stop5h 56mUnited Airlines
Tue 9/35:18 pmSTL - BUF
2 stops15h 19mUnited Airlines
Deal found 4/30$486
Thu 8/297:00 amBUF - STL
1 stop4h 07mUnited Airlines
Tue 9/35:18 pmSTL - BUF
2 stops15h 19mUnited Airlines
Deal found 4/30$506
Wed 5/156:15 amBUF - STL
1 stop4h 44mUnited Airlines
Mon 5/2011:10 amSTL - BUF
2 stops11h 17mUnited Airlines
Deal found 4/30$616
Tue 7/210:05 amBUF - STL
1 stop5h 13mUnited Airlines
Thu 7/46:30 amSTL - BUF
2 stops11h 28mUnited Airlines
Deal found 5/1$629
Tue 9/177:48 pmBUF - STL
2 stops15h 19mUnited Airlines
Fri 9/205:20 pmSTL - BUF
2 stops15h 17mUnited Airlines
Deal found 5/1$665
Thu 5/167:00 amBUF - STL
1 stop4h 14mUnited Airlines
Mon 5/204:57 pmSTL - BUF
3 stops22h 52mUnited Airlines
Deal found 4/30$690
Wed 8/286:15 amBUF - STL
2 stops10h 34mUnited Airlines
Tue 9/35:18 pmSTL - BUF
2 stops29h 14mUnited Airlines
Deal found 4/30$835

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

Find cheap flight options from Buffalo to St. Louis specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,899,487 searches. Prices were last updated on May 2, 2024.
Check out some of the best flight deals from Buffalo to St. Louis in 2024. Check back regularly for other flight deals.
Wed 5/89:43 pmBUF - STL
1 stop13h 55mFrontier
Sun 5/127:16 pmSTL - BUF
1 stop11h 39mFrontier
Deal found 5/1$204
Mon 5/205:25 pmBUF - STL
1 stop20h 44mFrontier
Thu 5/2311:06 pmSTL - BUF
1 stop18h 01mFrontier
Deal found 5/1$233
Sat 5/48:38 pmBUF - STL
1 stop11h 35mFrontier
Wed 5/89:53 pmSTL - BUF
1 stop8h 53mFrontier
Deal found 4/30$234
Mon 5/67:02 pmBUF - STL
1 stop21h 48mFrontier
Wed 5/89:53 pmSTL - BUF
1 stop8h 53mFrontier
Deal found 5/1$244
Thu 5/98:46 amBUF - STL
1 stop23h 27mFrontier
Sun 5/127:16 pmSTL - BUF
1 stop11h 39mFrontier
Deal found 5/1$298
Fri 5/311:08 amBUF - STL
1 stop23h 39mFrontier
Tue 5/74:50 pmSTL - BUF
1 stop27h 03mFrontier
Deal found 5/1$353
Fri 5/311:08 amBUF - STL
1 stop23h 39mFrontier
Tue 5/74:50 pmSTL - BUF
1 stop27h 03mFrontier
Deal found 5/1$357
Thu 5/166:00 amBUF - STL
1 stop4h 53mAmerican Airlines
Mon 5/204:02 pmSTL - BUF
1 stop6h 30mAmerican Airlines
Deal found 5/1$384
Sun 5/56:00 amBUF - STL
1 stop5h 13mAmerican Airlines
Fri 5/104:20 pmSTL - BUF
1 stop7h 12mAmerican Airlines
Deal found 5/1$424

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 2,899,487 searches. Data last updated May 2, 2024.
Check out some of the best flight deals from Buffalo to St. Louis in 2024. Check back regularly for other flight deals.
Wed 8/289:19 pmBUF - STL
1 stop10h 43mFrontier
Tue 9/310:32 pmSTL - BUF
1 stop18h 14mFrontier
Deal found 4/30$148
Thu 8/299:19 pmBUF - STL
1 stop10h 43mFrontier
Tue 9/310:32 pmSTL - BUF
1 stop18h 14mFrontier
Deal found 4/30$172
Wed 5/89:43 pmBUF - STL
1 stop13h 55mFrontier
Sun 5/127:16 pmSTL - BUF
1 stop11h 39mFrontier
Deal found 5/1$204
Mon 5/205:25 pmBUF - STL
1 stop20h 44mFrontier
Thu 5/2311:06 pmSTL - BUF
1 stop18h 01mFrontier
Deal found 5/1$233
Sat 5/48:38 pmBUF - STL
1 stop11h 35mFrontier
Wed 5/89:53 pmSTL - BUF
1 stop8h 53mFrontier
Deal found 4/30$234
Mon 5/67:02 pmBUF - STL
1 stop21h 48mFrontier
Wed 5/89:53 pmSTL - BUF
1 stop8h 53mFrontier
Deal found 5/1$244
Tue 9/176:41 amBUF - STL
1 stop4h 23mAmerican Airlines
Fri 9/205:37 amSTL - BUF
1 stop6h 24mAmerican Airlines
Deal found 5/1$258
Tue 7/26:46 pmBUF - STL
1 stop6h 17mAmerican Airlines
Thu 7/47:00 amSTL - BUF
1 stop5h 05mAmerican Airlines
Deal found 5/1$271
Sat 7/209:19 pmBUF - STL
1 stop10h 43mMultiple Airlines
Sun 7/216:00 pmSTL - BUF
1 stop18h 07mMultiple Airlines
Deal found 5/1$282

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 2,899,487 searches. Data last updated May 2, 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.
Wed 5/89:43 pmBUF - STL
1 stop13h 55mFrontier
Sun 5/127:16 pmSTL - BUF
1 stop11h 39mFrontier
Deal found 5/1$204
Thu 5/98:46 amBUF - STL
1 stop23h 27mFrontier
Sun 5/127:16 pmSTL - BUF
1 stop11h 39mFrontier
Deal found 5/1$298
Wed 5/86:08 amBUF - STL
2 stops10h 27mAmerican Airlines
Sun 5/126:40 amSTL - BUF
1 stop4h 21mAmerican Airlines
Deal found 5/1$571
Thu 5/96:08 amBUF - STL
2 stops10h 27mAmerican Airlines
Sun 5/125:55 amSTL - BUF
1 stop4h 00mAmerican Airlines
Deal found 5/1$641
Thu 5/96:08 amBUF - STL
2 stops10h 27mAmerican Airlines
Sun 5/127:45 amSTL - BUF
2 stops6h 52mAmerican Airlines
Deal found 5/1$807
Wed 5/86:30 amBUF - STL
2 stops7h 38mDelta
Sun 5/126:11 amSTL - BUF
2 stops6h 20mDelta
Deal found 5/1$1,550

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 2,899,487 searches. Data last updated May 2, 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.
Mon 5/68:45 amBUF - STL
1 stop12h 26mFrontier
Deal found 4/30$165
Mon 5/66:08 amBUF - STL
2 stops9h 27mAmerican Airlines
Deal found 4/30$323

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 2,899,487 searches. Data last updated May 2, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$148 - $486

Route

Depart

Return

Price

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Wed 8/28

1 stop10h 43m

Lambert-St Louis

Tue 9/3

1 stop18h 14m

$148

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Thu 8/29

1 stop10h 43m

Lambert-St Louis

Tue 9/3

1 stop18h 14m

$172

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Fri 5/31

1 stop15h 18m

Lambert-St Louis

Sun 6/2

1 stop11h 03m

$190

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Mon 5/13

1 stop12h 26m

Lambert-St Louis

Thu 5/16

1 stop18h 01m

$196

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Wed 7/17

1 stop4h 33m

Lambert-St Louis

Wed 7/24

1 stop4h 51m

$256

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Tue 9/17

1 stop4h 23m

Lambert-St Louis

Fri 9/20

1 stop6h 24m

$258

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Tue 7/2

1 stop6h 17m

Lambert-St Louis

Thu 7/4

1 stop5h 05m

$271

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Sat 7/20

1 stop10h 43m

Lambert-St Louis

Sun 7/21

1 stop18h 07m

$282

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Wed 8/28

1 stop5h 56m

Lambert-St Louis

Tue 9/3

2 stops15h 19m

$486

Flights are sorted by cheapest first

Deals found on 4/30

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 28, 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 $244 while a round-trip flight costs $251. Price data was last updated on April 28, 2024.

Currently, September is the cheapest month in which you can book a flight from Buffalo to St. Louis (average of $322). Flying from Buffalo to St. Louis in July is currently the most expensive (average of $377). 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

$345

June

$371

July

$377

August

$336

September

$322

October

$324

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 May 2, 2024.
Read through reviews of airlines operating flights from Buffalo to St. Louis, such as Frontier, United Airlines and American Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very good
10,874 reviews
Check prices

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

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.

Delta
8.1
Very good
10,874 reviews
Delta
8.1
Very good
10,874 reviews
Check prices

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

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.

United Airlines
7.4
Good
11,159 reviews
Delta
8.1
Very good
10,874 reviews
Check prices

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

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.

American Airlines
7.3
Good
14,788 reviews
Delta
8.1
Very good
10,874 reviews
Check prices

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

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.

Frontier
6.3
Okay
4,108 reviews
Delta
8.1
Very good
10,874 reviews
Check prices

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

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 $148, but on average you can expect to pay $321.

  • Are there last-minute flights available from Buffalo to St. Louis for under $300?

    There are currently 6+ open flights from Buffalo to St. Louis within the next 7 days for less than $300.

  • 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 $148 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $256 and $486 round-trip. Frontier is currently priced 61% below the average price you’ll pay for this route.

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

    Consider American Airlines, Delta or Frontier when booking your flight. These represent the most popular airlines when flying 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 5/1.

See more FAQs

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

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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 2,899,487 searches. Data last updated May 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$123Average$238FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapest$261Average$363FlexibilityNo 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
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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.
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Business Class
Prem Econ Class
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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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