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CA $216 Cheap Flights from Buffalo (BUF) to St. Louis (STL)

View CA $216 flight on Fri, Dec 25, 2026Opens in a new window

Popular airlines from Buffalo Niagara Intl. Airport (BUF) to Lambert-St. Louis International Airport (STL)

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

Prices were available within the past 7 days and start at CA $216 for one-way flights and CA $432 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Sep 5 - Fri, Sep 11
BUF
Buffalo
STL
St. Louis
CA $432 Roundtrip, found 2 days ago
CA $432
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Sep 5 from Buffalo to St. Louis, returning Fri, Sep 11, priced at CA $432 found 2 days ago
Delta
Sat, Sep 5 - Fri, Sep 11
BUF
Buffalo
STL
St. Louis
CA $432 Roundtrip, found 2 days ago
CA $432
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Sep 5 from Buffalo to St. Louis, returning Fri, Sep 11, priced at CA $432 found 2 days ago
American Airlines
Sat, Sep 5 - Fri, Sep 11
BUF
Buffalo
STL
St. Louis
CA $456 Roundtrip, found 2 days ago
CA $456
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Sep 5 from Buffalo to St. Louis, returning Fri, Sep 11, priced at CA $456 found 2 days ago
Delta
Sat, Nov 21 - Thu, Nov 26
BUF
Buffalo
STL
St. Louis
CA $458 Roundtrip, found 2 days ago
CA $458
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Nov 21 from Buffalo to St. Louis, returning Thu, Nov 26, priced at CA $458 found 2 days ago
American Airlines
Sat, Sep 5 - Fri, Sep 11
BUF
Buffalo
STL
St. Louis
CA $464 Roundtrip, found 2 days ago
CA $464
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Sep 5 from Buffalo to St. Louis, returning Fri, Sep 11, priced at CA $464 found 2 days ago
Delta
Mon, Nov 9 - Tue, Nov 24
BUF
Buffalo
STL
St. Louis
CA $477 Roundtrip, found 2 days ago
CA $477
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Nov 9 from Buffalo to St. Louis, returning Tue, Nov 24, priced at CA $477 found 2 days ago
American Airlines
Sat, Sep 5 - Fri, Sep 11
BUF
Buffalo
STL
St. Louis
CA $480 Roundtrip, found 2 days ago
CA $480
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Sep 5 from Buffalo to St. Louis, returning Fri, Sep 11, priced at CA $480 found 2 days ago
Delta
Tue, Aug 25 - Sat, Sep 5
BUF
Buffalo
STL
St. Louis
CA $482 Roundtrip, found 1 day ago
CA $482
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Aug 25 from Buffalo to St. Louis, returning Sat, Sep 5, priced at CA $482 found 1 day ago
American Airlines
Sat, Sep 19 - Tue, Sep 22
BUF
Buffalo
STL
St. Louis
CA $483 Roundtrip, found 1 day ago
CA $483
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Sep 19 from Buffalo to St. Louis, returning Tue, Sep 22, priced at CA $483 found 1 day ago
United
Sat, Sep 5 - Fri, Sep 11
BUF
Buffalo
STL
St. Louis
CA $488 Roundtrip, found 2 days ago
CA $488
Roundtrip
found 2 days ago
Select United flight, departing Sat, Sep 5 from Buffalo to St. Louis, returning Fri, Sep 11, priced at CA $488 found 2 days ago

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city centre is 20 minutes. Flights from CA $550
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city centre20 min
Flights from CA $550

Find the cheapest month to fly from Buffalo (BUF) to St. Louis (STL)

February is typically the cheapest month to fly

From CA $230 - CA $528 per traveller.

Frequently asked questions

How much does a flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) cost?
You can find cheap one-way flights from CA $216 and cheap return flights from CA $432 BUF to STL with Expedia. One-way flights typically cost between CA$154 and CA$691, and return flights often range between CA$506 and CA$1116. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when BUF to STL ticket fares go up or down.
What is the cheapest month to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
September is typically the cheapest month to fly from Buffalo Niagara International Airport (BUF) to Lambert-St. Louis International Airport (STL), with average return fares around CA$430. September often sees lower prices because the summer travel rush has ended, and demand for flights tends to decrease. Other cheap months to fly from Buffalo Niagara International Airport (BUF) to Lambert-St. Louis International Airport (STL) include May and August.
Which airlines fly direct from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Enter BUF to STL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
American Airlines is one of the cheapest airlines offering connecting return flights from Buffalo Niagara Intl. (BUF) to Lambert-St. Louis Intl. (STL), with prices starting from around CA$393 for flights that can be booked for departure within the next year, with a layover in LaGuardia (LGA). These prices are per adult, for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
To find a cheap flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The best time to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) is typically August or September. These months offer a great balance—prices are reasonable at around CA$430 for a return flight, and you'll have plenty of flight options since they're popular times to travel. If you're flexible, these months give you both affordable fares and excellent flight schedules to work with.
How many flights per day from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
There are approximately 61 connecting flights per day from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.). Some common connection points include Baltimore Washington Intl. Thurgood Marshall (BWI), O'Hare Intl. (ORD), and Midway Intl. (MDW).
What is the earliest flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The earliest flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) typically departs at around 5:00 AM local time. This flight is operated by American Airlines. This is a seasonal service, active only in August. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
You'll typically find the most flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) on a Tuesday, with around 44 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Southwest Airlines, American Airlines, and United.
What are the most popular departure times for flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The most popular departure time for flights from Buffalo Niagara Intl. (BUF) to Lambert-St. Louis Intl. (STL) is in the early morning, between 6am and 9am. Many major carriers, including Southwest Airlines, American Airlines and Delta, offer flights during this window. Many travellers prefer this time as it allows for an early start to their day in St. Louis.
How long does it take to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
There are no nonstop flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.). The distance between these two cities is approximately 1,083 kilometres. Flights with one stop typically take around 5 hours 18 minutes. If you opt for flights with two or more stops, your travel time will be longer, usually around 8 hours 48 minutes. Keep in mind that actual flight times can vary due to factors like layover duration, routing, and weather conditions.
Can you fly business or first class from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Yes, you can fly business class or first class between BUF and STL. You can fly business class with Frontier Airlines.First class cabins are available on Delta, United, and American Airlines.
How do I earn miles on a Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight with Expedia?
It's easy to earn miles on a Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for St. Louis, MO (STL) from Buffalo, NY (BUF)?
If you're planning to travel to St. Louis from Buffalo Niagara Intl. (BUF), you can fly directly into Lambert-St. Louis Intl. (STL). Some flights may connect through major hubs like Baltimore Washington Intl. Thurgood Marshall (BWI), Midway Intl. (MDW), or Washington Dulles Intl. (IAD) before reaching St. Louis. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) at the last minute?
Typically, booking a last minute flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package?
Securing a Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
If you booked your Buffalo, NY (BUF-Buffalo Niagara Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Buffalo Niagara Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
CA $432
Distance
1076 km

Book with confidence

Buffalo to St. Louis Flights

The easy way to book your flights from Buffalo to St. Louis 

With Expedia, it’s simple to find and book flights to St. Louis from Buffalo whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Lambert-St. Louis Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Buffalo to St. Louis today, tomorrow, or this week.  

 

Save dollars with cheap flights from Buffalo Niagara Intl., BUF to Lambert-St. Louis Intl., STL 

Sort your search results by price to find great deals on your flight from Buffalo to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from Buffalo currently is just CA $432 rising to CA $488.  

Here are more money-saving tips: 

  • Fly in September when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to St. Louis  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to St. Louis from Buffalo 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Louis with Expedia today.

Buffalo to St. Louis Flights

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