$97+ Cheap flights from St. Louis to Buffalo (STL - BUF)
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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BUF
Jul 9 — Jul 161
Round-trip
1 adult, Economy
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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
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Best
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Cheapest flights from St. Louis to BuffaloExplore 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 June 9, 2026.
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 June 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:34 pm
STL
- BUF
1 stop18h 19m
Frontier
Tue 7/1411:29 am
BUF
- STL
1 stop7h 08m
Frontier
Deal found 6/7![Frontier logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:34 pm
STL
- BUF
1 stop18h 19m
Frontier
Fri 7/242:48 pm
BUF
- STL
1 stop19h 09m
Frontier
Deal found 6/5![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:06 pm
STL
- BUF
1 stop16h 34m
Frontier
Fri 7/32:50 pm
BUF
- STL
1 stop19h 02m
Frontier
Deal found 6/4![Frontier logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/64:57 pm
STL
- BUF
1 stop16h 32m
Frontier
Fri 7/102:48 pm
BUF
- STL
1 stop19h 09m
Frontier
Deal found 6/5![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/244:57 pm
STL
- BUF
1 stop17h 36m
Frontier
Mon 7/272:48 pm
BUF
- STL
1 stop27h 49m
Frontier
Deal found 6/4![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/204:57 pm
STL
- BUF
1 stop16h 32m
Frontier
Thu 7/2311:29 am
BUF
- STL
1 stop7h 08m
Frontier
Deal found 6/8![Frontier logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/204:57 pm
STL
- BUF
1 stop16h 32m
Frontier
Wed 7/222:48 pm
BUF
- STL
1 stop27h 49m
Frontier
Deal found 6/5![Frontier logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:06 pm
STL
- BUF
1 stop17h 28m
Frontier
Thu 7/911:29 am
BUF
- STL
1 stop7h 08m
Frontier
Deal found 6/6![Frontier logo]()
$233
Best flights from St. Louis to BuffaloDiscover carefully curated flight deals from St. Louis to Buffalo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 9, 2026.
Discover carefully curated flight deals from St. Louis to Buffalo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 9, 2026.
This Delta deal was found by Cheapflights users on 6/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/66:30 am
STL
- BUF
1 stop3h 52m
Delta
Tue 8/116:27 am
BUF
- STL
1 stop4h 10m
Delta
Deal found 6/4![Delta logo]()
$275
This Southwest deal was found by Cheapflights users on 6/5. 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.
Mon 7/204:35 pm
STL
- BUF
2 stops6h 40m
Southwest
Wed 7/224:25 pm
BUF
- STL
2 stops7h 40m
Southwest
Deal found 6/5![Southwest logo]()
$382
This United Airlines deal was found by Cheapflights users on 6/5. 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 7/146:00 am
STL
- BUF
2 stops12h 03m
United Airlines
Wed 7/156:04 pm
BUF
- STL
1 stop4h 22m
United Airlines
Deal found 6/5![United Airlines logo]()
$422
This Southwest deal was found by Cheapflights users on 6/5. 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 7/213:15 pm
STL
- BUF
2 stops6h 30m
Southwest
Thu 7/235:55 pm
BUF
- STL
2 stops7h 45m
Southwest
Deal found 6/5![Southwest logo]()
$382
This Southwest deal was found by Cheapflights users on 6/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/311:25 am
STL
- BUF
2 stops6h 50m
Southwest
Thu 7/95:55 pm
BUF
- STL
2 stops7h 45m
Southwest
Deal found 6/6![Southwest logo]()
$388
This United Airlines deal was found by Cheapflights users on 6/8. 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 7/16:00 am
STL
- BUF
1 stop6h 13m
United Airlines
Sun 7/57:06 am
BUF
- STL
1 stop6h 05m
United Airlines
Deal found 6/8![United Airlines logo]()
$446
This Southwest deal was found by Cheapflights users on 6/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/64:25 pm
STL
- BUF
2 stops6h 50m
Southwest
Fri 7/1011:00 am
BUF
- STL
2 stops8h 30m
Southwest
Deal found 6/4![Southwest logo]()
$397
This Southwest deal was found by Cheapflights users on 6/8. 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.
Mon 7/204:35 pm
STL
- BUF
2 stops6h 40m
Southwest
Thu 7/235:55 pm
BUF
- STL
2 stops5h 55m
Southwest
Deal found 6/8![Southwest logo]()
$402
This Southwest deal was found by Cheapflights users on 6/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/234:35 pm
STL
- BUF
2 stops6h 40m
Southwest
Mon 7/274:10 pm
BUF
- STL
2 stops7h 40m
Southwest
Deal found 6/6![Southwest logo]()
$406
This Southwest deal was found by Cheapflights users on 6/7. 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.
Fri 8/72:45 pm
STL
- BUF
2 stops6h 05m
Southwest
Mon 8/103:55 pm
BUF
- STL
2 stops7h 10m
Southwest
Deal found 6/7![Southwest logo]()
$417
This Southwest deal was found by Cheapflights users on 6/8. 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.
Mon 7/611:25 am
STL
- BUF
2 stops6h 50m
Southwest
Mon 7/137:55 pm
BUF
- STL
1 stop4h 00m
Southwest
Deal found 6/8![Southwest logo]()
$439
Last-minute flights from St. Louis to BuffaloDiscover last-minute flight deals from St. Louis to Buffalo. Data last updated June 9, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Buffalo. Data last updated June 9, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:06 pm
STL
- BUF
1 stop16h 34m
Frontier
Fri 7/32:50 pm
BUF
- STL
1 stop19h 02m
Frontier
Deal found 6/4![Frontier logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:06 pm
STL
- BUF
1 stop17h 28m
Frontier
Thu 7/911:29 am
BUF
- STL
1 stop7h 08m
Frontier
Deal found 6/6![Frontier logo]()
$233
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/64:57 pm
STL
- BUF
1 stop16h 32m
Frontier
Fri 7/102:48 pm
BUF
- STL
1 stop19h 09m
Frontier
Deal found 6/5![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:34 pm
STL
- BUF
1 stop18h 19m
Frontier
Tue 7/1411:29 am
BUF
- STL
1 stop7h 08m
Frontier
Deal found 6/7![Frontier logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:34 pm
STL
- BUF
1 stop18h 19m
Frontier
Fri 7/242:48 pm
BUF
- STL
1 stop19h 09m
Frontier
Deal found 6/5![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/204:57 pm
STL
- BUF
1 stop16h 32m
Frontier
Thu 7/2311:29 am
BUF
- STL
1 stop7h 08m
Frontier
Deal found 6/8![Frontier logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/204:57 pm
STL
- BUF
1 stop16h 32m
Frontier
Wed 7/222:48 pm
BUF
- STL
1 stop27h 49m
Frontier
Deal found 6/5![Frontier logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/244:57 pm
STL
- BUF
1 stop17h 36m
Frontier
Mon 7/272:48 pm
BUF
- STL
1 stop27h 49m
Frontier
Deal found 6/4![Frontier logo]()
$202
One-way flights from St. Louis to BuffaloSearch for one-way flight options from St. Louis to Buffalo. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
Search for one-way flight options from St. Louis to Buffalo. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:34 pm
STL
- BUF
1 stop18h 19m
Frontier
Deal found 6/7![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/174:57 pm
STL
- BUF
1 stop17h 36m
Frontier
Deal found 6/7![Frontier logo]()
$106
This Delta deal was found by Cheapflights users on 6/5. 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.
Tue 7/216:09 pm
STL
- BUF
1 stop4h 49m
Delta
Deal found 6/5![Delta logo]()
$138
This American Airlines deal was found by Cheapflights users on 6/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:00 am
STL
- BUF
1 stop5h 38m
American Airlines
Deal found 6/4![American Airlines logo]()
$159
This Delta deal was found by Cheapflights users on 6/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/36:10 pm
STL
- BUF
1 stop4h 49m
Delta
Deal found 6/6![Delta logo]()
$164
This Southwest deal was found by Cheapflights users on 6/7. 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 7/75:40 am
STL
- BUF
2 stops7h 40m
Southwest
Deal found 6/7![Southwest logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/245:06 pm
STL
- BUF
1 stop16h 34m
Frontier
Deal found 6/8![Frontier logo]()
$182
This Southwest deal was found by Cheapflights users on 6/7. 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.
Fri 7/174:25 pm
STL
- BUF
2 stops6h 50m
Southwest
Deal found 6/7![Southwest logo]()
$199
This American Airlines deal was found by Cheapflights users on 6/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/261:42 pm
STL
- BUF
1 stop7h 10m
American Airlines
Deal found 6/4![American Airlines logo]()
$204
This Delta deal was found by Cheapflights users on 6/8. 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.
Fri 6/266:30 am
STL
- BUF
1 stop3h 54m
Delta
Deal found 6/8![Delta logo]()
$234
This Southwest deal was found by Cheapflights users on 6/3. 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 6/188:10 pm
STL
- BUF
1 stop11h 00m
Southwest
Deal found 6/3![Southwest logo]()
$239
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Sat 6/271:13 pm
STL
- BUF
1 stop6h 50m
United Airlines
Deal found 6/6![United Airlines logo]()
$244
Find 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 June 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $187 (Kiwi.com) |
One-way from | $97 (Kiwi.com) |
Popular in | April |
Cheapest in | January |
Average price | $416 |
Cheapflights Fare Finder
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 June 9, 2026.
Use the filters below to find and compare flights from St. Louis to Buffalo that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
St. LouisBuffalo
STL - BUF
STLBUF
Lambert-St Louis
Thu 8/6
6:30 am-11:22 am
1 stop3h 52m
Buffalo
Tue 8/11
6:27 am-9:37 am
1 stop4h 10m
$275
St. LouisBuffalo
STL - BUF
STLBUF
Lambert-St Louis
Mon 7/20
4:35 pm-12:15 am
2 stops6h 40m
Buffalo
Wed 7/22
4:25 pm-11:05 pm
2 stops7h 40m
$382
St. LouisBuffalo
STL - BUF
STLBUF
Lambert-St Louis
Tue 7/21
3:15 pm-10:45 pm
2 stops6h 30m
Buffalo
Thu 7/23
5:55 pm-12:40 am
2 stops7h 45m
$382
St. LouisBuffalo
STL - BUF
STLBUF
Lambert-St Louis
Fri 7/3
11:25 am-7:15 pm
2 stops6h 50m
Buffalo
Thu 7/9
5:55 pm-12:40 am
2 stops7h 45m
$388
St. LouisBuffalo
STL - BUF
STLBUF
Lambert-St Louis
Mon 7/6
4:25 pm-12:15 am
2 stops6h 50m
Buffalo
Fri 7/10
11:00 am-6:30 pm
2 stops8h 30m
$397
St. LouisBuffalo
STL - BUF
STLBUF
Lambert-St Louis
Mon 7/20
4:35 pm-12:15 am
2 stops6h 40m
Buffalo
Thu 7/23
5:55 pm-10:50 pm
2 stops5h 55m
$402
St. LouisBuffalo
STL - BUF
STLBUF
Lambert-St Louis
Thu 7/23
4:35 pm-12:15 am
2 stops6h 40m
Buffalo
Mon 7/27
4:10 pm-10:50 pm
2 stops7h 40m
$406
St. LouisBuffalo
STL - BUF
STLBUF
Lambert-St Louis
Fri 8/7
2:45 pm-9:50 pm
2 stops6h 05m
Buffalo
Mon 8/10
3:55 pm-10:05 pm
2 stops7h 10m
$417
St. LouisBuffalo
STL - BUF
STLBUF
Lambert-St Louis
Tue 7/14
6:00 am-7:03 pm
2 stops12h 03m
Buffalo
Wed 7/15
6:04 pm-9:26 pm
1 stop4h 22m
$422
St. LouisBuffalo
STL - BUF
STLBUF
Lambert-St Louis
Mon 7/6
11:25 am-7:15 pm
2 stops6h 50m
Buffalo
Mon 7/13
7:55 pm-10:55 pm
1 stop4h 00m
$439
Showing 1-10 of 23 resultsSorted by cheapest first
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 June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
STL-BUF
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.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Buffalo
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 $329). Flying from St. Louis to Buffalo in April is currently the most expensive (average of $508). 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.
How much does it cost to fly round-trip from St. Louis to Buffalo?
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 June 9, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andAmerican Airlines from St. Louis to Buffalo to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
7.9
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
7.9
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
7.9
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
7.9
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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.
Traveling to a place near Buffalo?
Book flights to Buffalo if you plan to visit one of these locationsLockport
Cheektowaga
Amherst
Batavia
Williamsville
Orchard Park
Eden
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Top 4 airlines flying from St. Louis to Buffalo
Discover the top 4 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 June 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$115 | Average$126 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$233 | Average$368 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$318 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$298 | Average$437 | FlexibilityNo cancel fee | On-time63% |