HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Buffalo

$155+ Cheap flights from St. Louis to Buffalo (STL - BUF)

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BUF
Feb 9 — Feb 161
Sun 2/9
Sun 2/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Buffalo with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Lambert-St Louis to Buffalo are usually found in February or October, booked 18 days in advance, depart on a Wednesday or Sunday and return on a Wednesday

Cheap flight deals from St. Louis to Buffalo

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Buffalo (BUF). 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 February 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$155
(Mytrip)

Popular in

January

Cheapest in

February

Average price

$305
Provider with most accurate pricing for Lambert-St Louis-Buffalo flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Buffalo flights.
Search Deals
From Lambert-St Louis to Buffalo
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from St. Louis to Buffalo

Cheapest flights from St. Louis to Buffalo
Explore the most affordable flight options available from St. Louis to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2025.

This Mytrip deal was found by Cheapflights users on 2/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/55:20 pmSTL - BUF
1 stop16h 04mFrontier
Wed 3/1211:24 amBUF - STL
1 stop13h 25mFrontier
Deal found 2/3$155
This United Airlines deal was found by Cheapflights users on 2/4. 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.
Tue 3/43:32 pmSTL - BUF
1 stop4h 23mUnited Airlines
Wed 3/56:00 amBUF - STL
1 stop5h 05mUnited Airlines
Deal found 2/4$282
This American Airlines deal was found by Cheapflights users on 2/3. 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 3/56:00 amSTL - BUF
2 stops8h 24mAmerican Airlines
Wed 3/126:00 amBUF - STL
1 stop8h 00mAmerican Airlines
Deal found 2/3$292
This Southwest deal was found by Cheapflights users on 2/3. 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.
Thu 9/117:20 amSTL - BUF
2 stops7h 30mSouthwest
Mon 9/156:10 amBUF - STL
1 stop3h 30mSouthwest
Deal found 2/3$353
This Delta deal was found by Cheapflights users on 2/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/267:20 amSTL - BUF
1 stop6h 12mDelta
Sun 6/296:00 amBUF - STL
1 stop5h 38mDelta
Deal found 2/3$397

Find flights from St. Louis to Buffalo within your budget

Customize your flight search to find flights from St. Louis to Buffalo 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 February 4, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Wed 3/5

5:20 pm-10:24 am

1 stop16h 04m

Buffalo

Wed 3/12

11:24 am-11:49 pm

1 stop13h 25m

$155

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Tue 3/4

3:32 pm-8:55 pm

1 stop4h 23m

Buffalo

Wed 3/5

6:00 am-10:05 am

1 stop5h 05m

$282

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Wed 3/5

6:00 am-3:24 pm

2 stops8h 24m

Buffalo

Wed 3/12

6:00 am-1:00 pm

1 stop8h 00m

$292

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Sun 2/23

5:00 pm-12:55 am

1 stop6h 55m

Buffalo

Tue 2/25

3:55 pm-7:40 pm

1 stop4h 45m

$380

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Thu 6/26

7:20 am-2:32 pm

1 stop6h 12m

Buffalo

Sun 6/29

6:00 am-10:38 am

1 stop5h 38m

$397

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Mon 6/30

5:29 am-12:50 pm

1 stop6h 21m

$174

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Mon 6/30

11:00 am-9:05 pm

2 stops9h 05m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

Compare providers for flights from St. Louis to Buffalo

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 St. Louis to Buffalo in February.
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 St. Louis-Buffalo flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Buffalo flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Buffalo flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Buffalo 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 St. Louis-Buffalo 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 St. Louis to Buffalo

Have a flexible travel schedule? Discover the best time to fly to Buffalo from St. Louis 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 St. Louis to Buffalo

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

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Buffalo. Price data was last updated on January 31, 2025.

To ensure you get the cheapest price possible for a flight from St. Louis to Buffalo, you should look to book at least 18 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.

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

Currently, January is the cheapest month in which you can book a flight from St. Louis to Buffalo (average of $256). Flying from St. Louis to Buffalo in December is currently the most expensive (average of $337). 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 STL to BUF?

Find hourly flight availability from St. Louis to Buffalo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 4, 2025.

It’s optimal to fly from St. Louis to Buffalo in the evening. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight in the morning.

Rainfall in Buffalo by month

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

In terms of precipitation, rainfall in Buffalo ranges from 2.5 - 4.0 inches per month. November is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Buffalo when rainfall is around 2.5 in.

Temperature in Buffalo by month

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

If weather is an important factor for your trip to Buffalo, 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 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

Reviews of airlines servicing Buffalo

Get insights into the airlines that provide service to Buffalo. 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 Buffalo. Reviews last updated February 4, 2025.
Southwest
8.1
Very good
4,560 reviews

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,560 reviews
Southwest
8.1
Very good
4,560 reviews

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,408 reviews
Southwest
8.1
Very good
4,560 reviews

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,887 reviews
Southwest
8.1
Very good
4,560 reviews

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,560 reviews

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Frontier
6.0
Okay
3,417 reviews
Southwest
8.1
Very good
4,560 reviews

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Crew

8.7

Food

7.1

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Buffalo. 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 St. Louis to Buffalo round-trip?

    According to our current data, Frontier ($155), United Airlines ($282), and American Airlines ($292) offers the cheapest pricing from St. Louis to Buffalo. Frontier is currently priced 61% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Buffalo 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 St. Louis to Buffalo?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Buffalo (average of $256). Flying from St. Louis to Buffalo in December is currently the most expensive (average of $337). 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
West Seneca
Williamsville
Amherst
Batavia
Orchard Park
Cheektowaga

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Buffalo

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to LaGuardia flights
St. Louis to Newark flights
Kansas City to LaGuardia flights
St. Louis to John F Kennedy Intl flights
Kansas City to Newark flights
Kansas City to John F Kennedy Intl flights
Springfield to John F Kennedy Intl flights
St. Louis to Syracuse flights
Springfield to Newark flights
Springfield to LaGuardia flights
St. Louis to White Plains flights
Kansas City to Buffalo flights
Kansas City to Albany flights
Kansas City to Syracuse flights
Kansas City to White Plains flights
St. Louis to Albany flights
St. Louis to Rochester flights
Kansas City to Rochester flights
Kansas City to Ithaca flights
Columbia to Newark flights
St. Louis to Binghamton flights
Columbia to John F Kennedy Intl flights
Joplin to LaGuardia flights
Joplin to Newark flights
Columbia to LaGuardia flights
Springfield to Buffalo flights
St. Louis to Ithaca flights
Kansas City to Stewart flights
Springfield to Albany flights
St. Louis to Elmira flights
St. Louis to Islip flights
Kansas City to Islip flights
St. Louis to Stewart flights
Springfield to Syracuse flights
Kansas City to Elmira flights
Springfield to White Plains flights
Kansas City to Binghamton flights
Kansas City to Plattsburgh flights
Joplin to John F Kennedy Intl flights
Columbia to Rochester flights
Columbia to Buffalo flights
Springfield to Stewart flights
Springfield to Islip flights
Columbia to Albany flights
Kansas City to Watertown flights
Joplin to Syracuse flights

Top 5 airlines flying from St. Louis to Buffalo

Discover the top 5 airlines that operate flights from St. Louis to Buffalo. 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 February 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$137Average$233FlexibilityNo cancel feeOn-time62%
DeltaCheapest$261Average$364FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$261Average$376FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$305Average$386FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$326Average$411FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.