Cheap flights from Buffalo to St. Louis (BUF - STL) from $95

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 5/4. 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
Mar 23 — Mar 301

The best prices from Buffalo to Lambert-St Louis are usually found in October or January, booked 39 days in advance, depart on a Monday or Sunday 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 March 19, 2024.

Popular in

March

Cheapest in

October

Round-trip from

$323

One-way from

$196
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 evening tend to be the most expensive. A flight at noon could potentially save you up to 14% 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 3,145,932 searches. Data last updated March 19, 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.
Sat 4/208:38 pmBUF - STL
1 stop11h 35mFrontier
Mon 4/229:11 pmSTL - BUF
1 stop9h 35mFrontier
Deal found 3/17$178
Thu 4/188:36 amBUF - STL
1 stop23h 37mFrontier
Mon 4/229:11 pmSTL - BUF
1 stop9h 35mFrontier
Deal found 3/17$179
Mon 5/67:02 pmBUF - STL
1 stop21h 48mFrontier
Fri 5/105:35 pmSTL - BUF
1 stop23h 37mFrontier
Deal found 3/17$189
Thu 5/28:36 amBUF - STL
1 stop23h 37mFrontier
Sun 5/53:29 pmSTL - BUF
1 stop25h 33mFrontier
Deal found 3/17$198
Fri 5/246:46 pmBUF - STL
1 stop15h 51mFrontier
Mon 5/279:20 pmSTL - BUF
1 stop21h 37mFrontier
Deal found 3/17$243
Sat 5/256:46 pmBUF - STL
1 stop21h 07mFrontier
Mon 5/279:20 pmSTL - BUF
1 stop21h 37mFrontier
Deal found 3/18$246
Thu 5/98:36 amBUF - STL
1 stop23h 37mFrontier
Sun 5/127:16 pmSTL - BUF
1 stop11h 39mFrontier
Deal found 3/17$288
Mon 5/68:45 amBUF - STL
1 stop12h 26mFrontier
Fri 5/105:35 pmSTL - BUF
2 stops14h 50mFrontier
Deal found 3/17$369

Cheap Delta flights from Buffalo to St. Louis

Explore cheap flight options specifically provided by Delta 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 3,145,932 searches. Data last updated March 19, 2024.
Have a look at some of the cheapest available Delta flights departing from Buffalo and landing in St. Louis. Make sure to examine the flight information before completing your reservation.
Sat 4/277:05 amBUF - STL
1 stop5h 41mDelta
Tue 4/3010:01 amSTL - BUF
1 stop7h 16mDelta
Deal found 3/17$306
Sun 5/266:20 amBUF - STL
1 stop3h 59mDelta
Mon 5/276:10 pmSTL - BUF
1 stop3h 49mDelta
Deal found 3/17$336
Sat 4/276:00 amBUF - STL
1 stop6h 56mDelta
Tue 4/307:15 amSTL - BUF
2 stops10h 04mDelta
Deal found 3/17$429
Mon 5/62:35 pmBUF - STL
2 stops7h 48mDelta
Fri 5/106:30 amSTL - BUF
1 stop5h 56mDelta
Deal found 3/17$810
Thu 5/96:30 amBUF - STL
2 stops7h 38mDelta
Sun 5/126:13 amSTL - BUF
2 stops6h 13mDelta
Deal found 3/18$1,241
Sun 5/262:10 pmBUF - STL
2 stops8h 14mDelta
Mon 5/276:13 amSTL - BUF
2 stops6h 13mDelta
Deal found 3/17$1,362
Mon 5/62:35 pmBUF - STL
2 stops7h 48mDelta
Fri 5/106:30 amSTL - BUF
2 stops10h 49mDelta
Deal found 3/17$1,382
Thu 5/96:30 amBUF - STL
2 stops7h 38mDelta
Sun 5/126:13 amSTL - BUF
2 stops6h 13mDelta
Deal found 3/17$1,397
Thu 5/22:13 pmBUF - STL
2 stops8h 10mDelta
Sun 5/56:13 amSTL - BUF
2 stops6h 17mDelta
Deal found 3/17$1,451

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

Find cheap flight options from Buffalo to St. Louis specifically for the months of March and April 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,145,932 searches. Prices were last updated on March 19, 2024.
Check out some of the best flight deals from Buffalo to St. Louis in 2024. Check back regularly for other flight deals.
Sat 4/208:38 pmBUF - STL
1 stop11h 35mFrontier
Mon 4/229:11 pmSTL - BUF
1 stop9h 35mFrontier
Deal found 3/17$178
Thu 4/188:36 amBUF - STL
1 stop23h 37mFrontier
Mon 4/229:11 pmSTL - BUF
1 stop9h 35mFrontier
Deal found 3/17$179
Thu 3/2111:04 amBUF - STL
1 stop22h 17mFrontier
Tue 3/268:24 pmSTL - BUF
1 stop22h 27mFrontier
Deal found 3/17$259
Sat 4/277:05 amBUF - STL
1 stop5h 41mDelta
Tue 4/3010:01 amSTL - BUF
1 stop7h 16mDelta
Deal found 3/17$306
Sun 4/146:00 amBUF - STL
1 stop5h 13mAmerican Airlines
Tue 4/166:20 amSTL - BUF
1 stop4h 12mAmerican Airlines
Deal found 3/17$345
Sun 4/147:00 amBUF - STL
1 stop4h 14mUnited Airlines
Tue 4/1611:10 amSTL - BUF
2 stops11h 13mUnited Airlines
Deal found 3/17$352
Fri 3/229:51 pmBUF - STL
1 stop10h 12mFrontier
Sun 3/248:24 pmSTL - BUF
1 stop23h 16mFrontier
Deal found 3/17$368
Thu 3/2111:04 amBUF - STL
1 stop22h 17mFrontier
Tue 3/2610:04 pmSTL - BUF
2 stops20h 47mFrontier
Deal found 3/17$386
Fri 3/229:51 pmBUF - STL
1 stop13h 52mMultiple Airlines
Mon 3/255:35 pmSTL - BUF
1 stop23h 53mMultiple Airlines
Deal found 3/17$394

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 3,145,932 searches. Data last updated March 19, 2024.
Check out some of the best flight deals from Buffalo to St. Louis in 2024. Check back regularly for other flight deals.
Sat 4/208:38 pmBUF - STL
1 stop11h 35mFrontier
Mon 4/229:11 pmSTL - BUF
1 stop9h 35mFrontier
Deal found 3/17$178
Thu 4/188:36 amBUF - STL
1 stop23h 37mFrontier
Mon 4/229:11 pmSTL - BUF
1 stop9h 35mFrontier
Deal found 3/17$179
Mon 5/67:02 pmBUF - STL
1 stop21h 48mFrontier
Fri 5/105:35 pmSTL - BUF
1 stop23h 37mFrontier
Deal found 3/17$189
Thu 5/28:36 amBUF - STL
1 stop23h 37mFrontier
Sun 5/53:29 pmSTL - BUF
1 stop25h 33mFrontier
Deal found 3/17$198
Fri 5/246:46 pmBUF - STL
1 stop15h 51mFrontier
Mon 5/279:20 pmSTL - BUF
1 stop21h 37mFrontier
Deal found 3/17$243
Sat 5/256:46 pmBUF - STL
1 stop21h 07mFrontier
Mon 5/279:20 pmSTL - BUF
1 stop21h 37mFrontier
Deal found 3/18$246
Thu 3/2111:04 amBUF - STL
1 stop22h 17mFrontier
Tue 3/268:24 pmSTL - BUF
1 stop22h 27mFrontier
Deal found 3/17$259
Thu 5/98:36 amBUF - STL
1 stop23h 37mFrontier
Sun 5/127:16 pmSTL - BUF
1 stop11h 39mFrontier
Deal found 3/17$288
Sat 4/277:05 amBUF - STL
1 stop5h 41mDelta
Tue 4/3010:01 amSTL - BUF
1 stop7h 16mDelta
Deal found 3/17$306

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 3,145,932 searches. Data last updated March 19, 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.
Sat 5/48:38 pmBUF - STL
1 stop11h 35mFrontier
Deal found 3/17$95
Sat 5/47:12 pmBUF - STL
2 stops16h 06mFrontier
Deal found 3/17$190
Sun 3/318:49 pmBUF - STL
2 stops38h 34mFrontier
Deal found 3/17$196
Sun 3/316:05 amBUF - STL
1 stop7h 48mAmerican Airlines
Deal found 3/17$214
Sat 5/410:04 pmBUF - STL
3 stops15h 46mMultiple Airlines
Deal found 3/17$220
Sun 3/319:04 amBUF - STL
3 stops28h 46mMultiple Airlines
Deal found 3/17$396

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 3,145,932 searches. Data last updated March 19, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$178 - $352

Route

Depart

Return

Price

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Sat 4/20

1 stop11h 35m

Lambert-St Louis

Mon 4/22

1 stop9h 35m

$178

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Thu 4/18

1 stop23h 37m

Lambert-St Louis

Mon 4/22

1 stop9h 35m

$179

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Mon 5/6

1 stop21h 48m

Lambert-St Louis

Fri 5/10

1 stop23h 37m

$189

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Thu 5/2

1 stop23h 37m

Lambert-St Louis

Sun 5/5

1 stop25h 33m

$198

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Fri 5/24

1 stop15h 51m

Lambert-St Louis

Mon 5/27

1 stop21h 37m

$243

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Sat 4/27

1 stop5h 41m

Lambert-St Louis

Tue 4/30

1 stop7h 16m

$306

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Wed 6/12

1 stop21h 07m

Lambert-St Louis

Sun 6/16

1 stop4h 34m

$307

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Sun 4/14

1 stop5h 13m

Lambert-St Louis

Tue 4/16

1 stop4h 12m

$345

BuffaloLambert-St Louis

BUF - STL

BUFSTL

Buffalo

Sun 4/14

1 stop4h 14m

Lambert-St Louis

Tue 4/16

2 stops11h 13m

$352

Flights are sorted by cheapest first

Deals found on 3/17

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 March 10, 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 $219 while a round-trip flight costs $255. Price data was last updated on March 10, 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 June is currently the most expensive (average of $386). 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

$358

April

$356

May

$358

June

$386

July

$382

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 March 19, 2024.
Read through reviews of airlines operating flights from Buffalo to St. Louis, such as Frontier, Delta and American Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
11,551 reviews

Entertainment

8.1

Overall

8.1

Crew

8.6

Food

7.5

Comfort

7.9

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.

8.1
Very good
11,551 reviews
8.1
Very good
11,551 reviews

Entertainment

8.1

Overall

8.1

Crew

8.6

Food

7.5

Comfort

7.9

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.

7.4
Good
11,618 reviews
8.1
Very good
11,551 reviews

Entertainment

8.1

Overall

8.1

Crew

8.6

Food

7.5

Comfort

7.9

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.

7.3
Good
15,312 reviews
8.1
Very good
11,551 reviews

Entertainment

8.1

Overall

8.1

Crew

8.6

Food

7.5

Comfort

7.9

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.

6.4
Okay
4,333 reviews
8.1
Very good
11,551 reviews

Entertainment

8.1

Overall

8.1

Crew

8.6

Food

7.5

Comfort

7.9

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 $178, but on average you can expect to pay $321.

  • 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 $178 on this airline. Additional options worth looking into are Delta and American Airlines, starting at $306 and $345 round-trip. Frontier is currently priced 53% below the average price you’ll pay for this route.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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.

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 3,145,932 searches. Data last updated March 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$117Average$238FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapest$254Average$364FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$274Average$384FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$310Average$361FlexibilityNo 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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