$129+ 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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — STL
mai 23 — mai 301
Round-trip
1 adult, Economy
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Find cheap flights from Buffalo to St. Louis with Cheapflights
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Best
Last-minute
One-way
Cheapest flights from Buffalo to St. LouisExplore 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 avril 23, 2026.
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 avril 23, 2026.
This Justfly.com deal was found by Cheapflights users on 4/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 5/1411:36 am
BUF
- STL
1 stop6h 18m
Frontier
sam. 5/164:19 pm
STL
- BUF
1 stop25h 27m
Frontier
Deal found 4/20![Frontier logo]()
$171
This CheapOair deal was found by Cheapflights users on 4/18. 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.
ven. 6/57:52 pm
BUF
- STL
1 stop29h 05m
Frontier
mar. 6/94:17 pm
STL
- BUF
1 stop25h 55m
Frontier
Deal found 4/18![Frontier logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 4/21. 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.
mar. 5/1211:36 am
BUF
- STL
1 stop6h 57m
Frontier
mer. 5/135:27 pm
STL
- BUF
1 stop16h 14m
Frontier
Deal found 4/21![Frontier logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
lun. 5/112:49 pm
BUF
- STL
2 stops10h 32m
Frontier
mer. 5/135:27 pm
STL
- BUF
1 stop16h 14m
Frontier
Deal found 4/20![Frontier logo]()
$227
This Frontier deal was found by Cheapflights users on 4/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 6/1811:35 am
BUF
- STL
1 stop6h 55m
Frontier
jeu. 6/254:17 pm
STL
- BUF
1 stop25h 55m
Frontier
Deal found 4/22![Frontier logo]()
$231
This CheapOair deal was found by Cheapflights users on 4/20. 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.
jeu. 4/3011:19 am
BUF
- STL
1 stop13h 00m
Frontier
sam. 5/24:59 pm
STL
- BUF
1 stop25h 14m
Frontier
Deal found 4/20![Frontier logo]()
$233
This CheapOair deal was found by Cheapflights users on 4/21. 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.
lun. 6/157:57 pm
BUF
- STL
1 stop29h 12m
Frontier
mer. 6/174:17 pm
STL
- BUF
1 stop25h 55m
Frontier
Deal found 4/21![Frontier logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
dim. 6/2111:35 am
BUF
- STL
1 stop22h 17m
Frontier
sam. 6/275:06 pm
STL
- BUF
1 stop16h 34m
Frontier
Deal found 4/20![Frontier logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 4/18. 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.
mar. 5/2611:36 am
BUF
- STL
1 stop6h 57m
Frontier
lun. 6/15:27 pm
STL
- BUF
1 stop16h 14m
Frontier
Deal found 4/18![Frontier logo]()
$246
This CheapOair deal was found by Cheapflights users on 4/21. 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.
sam. 6/2710:05 pm
BUF
- STL
1 stop27h 04m
Frontier
mar. 6/304:17 pm
STL
- BUF
1 stop25h 55m
Frontier
Deal found 4/21![Frontier logo]()
$255
Best flights from Buffalo to St. LouisDiscover carefully curated flight deals from Buffalo to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated avril 23, 2026.
Discover carefully curated flight deals from Buffalo to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated avril 23, 2026.
This CheapOair deal was found by Cheapflights users on 4/22. 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.
ven. 6/267:57 pm
BUF
- STL
1 stop29h 12m
Frontier
lun. 6/294:17 pm
STL
- BUF
1 stop25h 55m
Frontier
Deal found 4/22![Frontier logo]()
$241
This Southwest deal was found by Cheapflights users on 4/20. 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.
lun. 5/118:00 pm
BUF
- STL
1 stop3h 45m
Southwest
mer. 5/131:15 pm
STL
- BUF
1 stop4h 00m
Southwest
Deal found 4/20![Southwest logo]()
$287
This United Airlines deal was found by Cheapflights users on 4/20. 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.
mer. 6/37:00 am
BUF
- STL
1 stop6h 11m
United Airlines
sam. 6/61:13 pm
STL
- BUF
1 stop6h 50m
United Airlines
Deal found 4/20![United Airlines logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 4/18. 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.
mar. 5/2611:36 am
BUF
- STL
1 stop6h 57m
Frontier
lun. 6/15:27 pm
STL
- BUF
1 stop16h 14m
Frontier
Deal found 4/18![Frontier logo]()
$246
This Southwest deal was found by Cheapflights users on 4/21. 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.
mar. 5/121:10 pm
BUF
- STL
2 stops7h 50m
Southwest
mer. 5/137:35 am
STL
- BUF
2 stops6h 00m
Southwest
Deal found 4/21![Southwest logo]()
$341
This United Airlines deal was found by Cheapflights users on 4/21. 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.
sam. 6/277:00 am
BUF
- STL
1 stop4h 34m
United Airlines
mar. 6/306:00 am
STL
- BUF
2 stops7h 25m
United Airlines
Deal found 4/21![United Airlines logo]()
$367
This Kiwi.com deal was found by Cheapflights users on 4/22. 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.
lun. 7/132:50 pm
BUF
- STL
1 stop27h 47m
Frontier
dim. 7/194:09 pm
STL
- BUF
1 stop25h 57m
Frontier
Deal found 4/22![Frontier logo]()
$342
This Southwest deal was found by Cheapflights users on 4/18. 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.
ven. 6/57:55 pm
BUF
- STL
1 stop3h 55m
Southwest
mar. 6/93:15 pm
STL
- BUF
2 stops6h 25m
Southwest
Deal found 4/18![Southwest logo]()
$367
This United Airlines deal was found by Cheapflights users on 4/18. 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.
sam. 5/95:55 pm
BUF
- STL
1 stop6h 24m
United Airlines
mar. 5/129:21 am
STL
- BUF
1 stop6h 33m
United Airlines
Deal found 4/18![United Airlines logo]()
$377
This Southwest deal was found by Cheapflights users on 4/18. 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.
lun. 6/14:00 pm
BUF
- STL
2 stops7h 45m
Southwest
mer. 6/35:35 am
STL
- BUF
1 stop3h 45m
Southwest
Deal found 4/18![Southwest logo]()
$367
Last-minute flights from Buffalo to St. LouisDiscover last-minute flight deals from Buffalo to St. Louis. Data last updated avril 23, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to St. Louis. Data last updated avril 23, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 4/20. 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.
jeu. 4/3011:19 am
BUF
- STL
1 stop13h 00m
Frontier
sam. 5/24:59 pm
STL
- BUF
1 stop25h 14m
Frontier
Deal found 4/20![Frontier logo]()
$233
This CheapOair deal was found by Cheapflights users on 4/20. 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.
dim. 5/34:07 pm
BUF
- STL
1 stop8h 12m
Frontier
jeu. 5/74:19 pm
STL
- BUF
1 stop25h 27m
Frontier
Deal found 4/20![Frontier logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
lun. 5/112:49 pm
BUF
- STL
2 stops10h 32m
Frontier
mer. 5/135:27 pm
STL
- BUF
1 stop16h 14m
Frontier
Deal found 4/20![Frontier logo]()
$227
This Southwest deal was found by Cheapflights users on 4/20. 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.
lun. 5/118:00 pm
BUF
- STL
1 stop3h 45m
Southwest
mer. 5/131:15 pm
STL
- BUF
1 stop4h 00m
Southwest
Deal found 4/20![Southwest logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 4/21. 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.
mar. 5/1211:36 am
BUF
- STL
1 stop6h 57m
Frontier
mer. 5/135:27 pm
STL
- BUF
1 stop16h 14m
Frontier
Deal found 4/21![Frontier logo]()
$205
This Justfly.com deal was found by Cheapflights users on 4/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 5/1411:36 am
BUF
- STL
1 stop6h 18m
Frontier
sam. 5/164:19 pm
STL
- BUF
1 stop25h 27m
Frontier
Deal found 4/20![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 4/22. 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.
jeu. 5/2111:36 am
BUF
- STL
1 stop5h 39m
Frontier
lun. 5/254:19 pm
STL
- BUF
1 stop25h 40m
Frontier
Deal found 4/22![Frontier logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 4/18. 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.
mar. 5/2611:36 am
BUF
- STL
1 stop6h 57m
Frontier
lun. 6/15:27 pm
STL
- BUF
1 stop16h 14m
Frontier
Deal found 4/18![Frontier logo]()
$246
One-way flights from Buffalo to St. LouisSearch for one-way flight options from Buffalo to St. Louis. Find affordable one-way fares based on user searches. Data last updated avril 23, 2026.
Search for one-way flight options from Buffalo to St. Louis. Find affordable one-way fares based on user searches. Data last updated avril 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/21. 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.
jeu. 5/2111:36 am
BUF
- STL
1 stop5h 39m
Frontier
Deal found 4/21![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 4/21. 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.
jeu. 5/1411:36 am
BUF
- STL
2 stops13h 45m
Frontier
Deal found 4/21![Frontier logo]()
$130
This Priceline deal was found by Cheapflights users on 4/21. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 7/1911:35 am
BUF
- STL
1 stop6h 55m
Frontier
Deal found 4/21![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 4/22. 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.
dim. 6/711:36 am
BUF
- STL
1 stop22h 19m
Frontier
Deal found 4/22![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 4/22. 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.
jeu. 4/301:08 pm
BUF
- STL
2 stops35h 11m
Frontier
Deal found 4/22![Frontier logo]()
$172
This American Airlines deal was found by Cheapflights users on 4/21. 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.
ven. 5/156:00 am
BUF
- STL
1 stop6h 47m
American Airlines
Deal found 4/21![American Airlines logo]()
$186
This Delta deal was found by Cheapflights users on 4/20. 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.
dim. 9/276:25 am
BUF
- STL
1 stop4h 05m
Delta
Deal found 4/20![Delta logo]()
$194
This Kiwi.com deal was found by Cheapflights users on 4/21. 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.
jeu. 5/2111:36 am
BUF
- STL
2 stops13h 21m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$199
This Delta deal was found by Cheapflights users on 4/20. 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.
ven. 5/156:25 am
BUF
- STL
1 stop4h 04m
Delta
Deal found 4/20![Delta logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 4/22. 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.
jeu. 4/301:08 pm
BUF
- STL
3 stops30h 08m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$225
Find 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 avril 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $171 (Justfly.com) |
One-way from | $129 (Kiwi.com) |
Popular in | March |
Cheapest in | December |
Average price | $393 |
Cheapflights Fare Finder
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 avril 23, 2026.
Use the filters below to find and compare flights from Buffalo to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
ven. 6/26
7:57 pm-12:09 am
1 stop29h 12m
Lambert-St Louis
lun. 6/29
4:17 pm-7:12 pm
1 stop25h 55m
$241
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
mar. 5/26
11:36 am-5:33 pm
1 stop6h 57m
Lambert-St Louis
lun. 6/1
5:27 pm-10:41 am
1 stop16h 14m
$246
Quickest round-trip
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
lun. 5/11
8:00 pm-10:45 pm
1 stop3h 45m
Lambert-St Louis
mer. 5/13
1:15 pm-6:15 pm
1 stop4h 00m
$287
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
mer. 6/3
7:00 am-12:11 pm
1 stop6h 11m
Lambert-St Louis
sam. 6/6
1:13 pm-9:03 pm
1 stop6h 50m
$323
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
mar. 5/12
1:10 pm-8:00 pm
2 stops7h 50m
Lambert-St Louis
mer. 5/13
7:35 am-2:35 pm
2 stops6h 00m
$341
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
lun. 7/13
2:50 pm-5:37 pm
1 stop27h 47m
Lambert-St Louis
dim. 7/19
4:09 pm-7:06 pm
1 stop25h 57m
$342
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
sam. 6/27
7:00 am-10:34 am
1 stop4h 34m
Lambert-St Louis
mar. 6/30
6:00 am-2:25 pm
2 stops7h 25m
$367
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
ven. 6/5
7:55 pm-10:50 pm
1 stop3h 55m
Lambert-St Louis
mar. 6/9
3:15 pm-10:40 pm
2 stops6h 25m
$367
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
lun. 6/1
4:00 pm-10:45 pm
2 stops7h 45m
Lambert-St Louis
mer. 6/3
5:35 am-10:20 am
1 stop3h 45m
$367
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
sam. 5/9
5:55 pm-11:19 pm
1 stop6h 24m
Lambert-St Louis
mar. 5/12
9:21 am-4:54 pm
1 stop6h 33m
$377
Showing 1-10 of 21 resultsSorted by cheapest first
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 April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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.
BUF-STL
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 Buffalo to St. Louis
What is the cheapest month to book a flight from Buffalo to St. Louis?
Currently, December is the cheapest month in which you can book a flight from Buffalo to St. Louis (average of $319). Flying from Buffalo to St. Louis in March is currently the most expensive (average of $637). 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 Buffalo to St. Louis?
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 avril 23, 2026.
Read through reviews of airlines operating flights from Buffalo to St. Louis, such as Southwest,Delta, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
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Buffalo and St. Louis flights
Browse other Buffalo and St. Louis flight options. Last updated on avril 23, 2026.
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Top 3 airlines flying from Buffalo to St. Louis
Discover the top 3 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 avril 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$164 | Average$367 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$236 | Average$373 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$317 | Average$456 | FlexibilityNo cancel fee | On-time63% |