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$75+ Cheap flights from Buffalo to St. Louis (BUF - STL)

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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — STL
Mar 13 — Mar 201
Thu 3/13
Thu 3/20
1 adult, Economy
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Find cheap flights from Buffalo to St. Louis with Cheapflights

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The best prices from Buffalo to Lambert-St Louis are usually found in August or September, booked 86 days in advance, depart on a Wednesday or Tuesday 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 8, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$150
(CheapOair)

One-way from

$75
(CheapOair)

Popular in

May

Cheapest in

August

Average price

$366
Provider with most accurate pricing for Buffalo-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Buffalo-Lambert-St Louis flights.
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From Buffalo to Lambert-St Louis
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One-way flight from Buffalo to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Buffalo to St. Louis

Cheapest flights from Buffalo to St. Louis
Explore the most affordable flight options available from Buffalo to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 8, 2025.

This CheapOair deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/15:37 pmBUF - STL
1 stop7h 09mFrontier
Wed 4/24:57 pmSTL - BUF
1 stop22h 40mFrontier
Deal found 3/7$150
This American Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/24:20 pmBUF - STL
2 stops6h 58mAmerican Airlines
Tue 4/86:13 amSTL - BUF
1 stop9h 55mAmerican Airlines
Deal found 3/6$275
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/28:50 amBUF - STL
2 stops7h 57mUnited Airlines
Tue 4/83:40 pmSTL - BUF
2 stops7h 04mUnited Airlines
Deal found 3/6$287
This Southwest deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/16:10 amBUF - STL
2 stops8h 25mSouthwest
Thu 4/35:50 amSTL - BUF
1 stop5h 50mSouthwest
Deal found 3/7$322

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 2,558,603 searches. Data last updated March 8, 2025.

Fly from

Buffalo

Fly to

St. Louis

Route

Depart

Return

Price

BuffaloSt. Louis

BUF - STL

BUFSTL

Buffalo

Tue 4/1

5:37 pm-11:46 pm

1 stop7h 09m

Lambert-St Louis

Wed 4/2

4:57 pm-4:37 pm

1 stop22h 40m

$150

BuffaloSt. Louis

BUF - STL

BUFSTL

Buffalo

Wed 4/2

4:20 pm-10:18 pm

2 stops6h 58m

Lambert-St Louis

Tue 4/8

6:13 am-5:08 pm

1 stop9h 55m

$275

BuffaloSt. Louis

BUF - STL

BUFSTL

Buffalo

Wed 4/2

8:50 am-3:47 pm

2 stops7h 57m

Lambert-St Louis

Tue 4/8

3:40 pm-11:44 pm

2 stops7h 04m

$287

BuffaloSt. Louis

BUF - STL

BUFSTL

Buffalo

Tue 4/1

6:10 am-1:35 pm

2 stops8h 25m

Lambert-St Louis

Thu 4/3

5:50 am-12:40 pm

1 stop5h 50m

$322

BuffaloSt. Louis

BUF - STL

BUFSTL

Buffalo

Tue 4/1

5:37 pm-11:46 pm

1 stop7h 09m

$75

BuffaloSt. Louis

BUF - STL

BUFSTL

Buffalo

Tue 4/1

6:10 am-1:35 pm

2 stops8h 25m

$144

BuffaloSt. Louis

BUF - STL

BUFSTL

Buffalo

Fri 8/22

3:30 pm-8:47 pm

1 stop6h 17m

$174

BuffaloSt. Louis

BUF - STL

BUFSTL

Buffalo

Sat 4/5

10:20 am-9:48 pm

2 stops12h 28m

$224

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

Compare providers for flights from Buffalo to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Buffalo to St. Louis in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Buffalo-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Buffalo-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Buffalo-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Buffalo-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Buffalo-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Buffalo to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Buffalo with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Buffalo to St. Louis

Get recent, data-driven insights about flights from Buffalo to St. Louis including ideal travel times, pricing trends, and more.

How far ahead should I 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 February 28, 2025.

The best time to book flights from Buffalo to St. Louis is 85 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.

What is the cheapest month to book a flight from Buffalo to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Buffalo to St. Louis (average of $311). Flying from Buffalo to St. Louis in March is currently the most expensive (average of $356). 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.

What is the cheapest time of day to fly from BUF to STL?

Find hourly flight availability from Buffalo to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 8, 2025.

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 22% on airfare.

Rainfall in St. Louis by month

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

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

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

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 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 8, 2025.
Southwest
8.1
Very good
4,314 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest
8.1
Very good
4,314 reviews
Southwest
8.1
Very good
4,314 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta
8.0
Very good
8,024 reviews
Southwest
8.1
Very good
4,314 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines
7.4
Good
8,649 reviews
Southwest
8.1
Very good
4,314 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,314 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Frontier
6.0
Okay
3,314 reviews
Southwest
8.1
Very good
4,314 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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.

  • 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 $150 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $275 and $287 round-trip. Frontier is currently priced 57% 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 Frontier, which is currently one of the cheapest options available, starting at $75. Southwest flights start at $144 while deals on Delta start at $174 one-way.

  • 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.

  • What is the cheapest month to book a flight from Buffalo to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Buffalo to St. Louis (average of $311). Flying from Buffalo to St. Louis in March is currently the most expensive (average of $356). 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.

See more FAQs

Traveling to a place near Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

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Top 5 airlines flying from Buffalo to St. Louis

Discover the top 5 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 2,558,603 searches. Data last updated March 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$125Average$245FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$243Average$342FlexibilityNo cancel feeOn-time71%
DeltaCheapest$276Average$347FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$286Average$435FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$296Average$416FlexibilityNo cancel feeOn-time63%
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