$111+ 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — STL
Jul 12 — Jul 191
Round-trip
1 adult, Economy
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Find cheap flights from Buffalo to St. Louis 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
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 June 12, 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 June 12, 2026.
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 7/82:48 pm
BUF
- STL
1 stop27h 49m
Frontier
Wed 7/154:57 pm
STL
- BUF
1 stop16h 32m
Frontier
Deal found 6/8![Frontier logo]()
$187
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 7/172:48 pm
BUF
- STL
1 stop19h 09m
Frontier
Wed 7/224:57 pm
STL
- BUF
1 stop16h 32m
Frontier
Deal found 6/7![Frontier logo]()
$191
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.
Thu 7/911:29 am
BUF
- STL
1 stop7h 08m
Frontier
Sat 7/114:57 pm
STL
- BUF
1 stop16h 32m
Frontier
Deal found 6/8![Frontier logo]()
$199
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 7/172:48 pm
BUF
- STL
1 stop19h 09m
Frontier
Mon 7/204:57 pm
STL
- BUF
1 stop16h 32m
Frontier
Deal found 6/7![Frontier logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Thu 7/911:29 am
BUF
- STL
1 stop7h 08m
Frontier
Fri 7/104:57 pm
STL
- BUF
1 stop17h 36m
Frontier
Deal found 6/9![Frontier logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Thu 8/1311:29 am
BUF
- STL
1 stop7h 08m
Frontier
Sun 9/2010:35 am
STL
- BUF
1 stop24h 46m
Frontier
Deal found 6/10![Frontier logo]()
$221
This Southwest deal was found by Cheapflights users on 6/10. 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.
Wed 9/22:35 pm
BUF
- STL
1 stop6h 20m
Southwest
Tue 9/156:30 am
STL
- BUF
2 stops6h 50m
Southwest
Deal found 6/10![Southwest logo]()
$227
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Sat 8/227:34 pm
BUF
- STL
1 stop5h 00m
American Airlines
Tue 8/256:00 am
STL
- BUF
1 stop5h 38m
American Airlines
Deal found 6/10![American Airlines logo]()
$237
This Southwest deal was found by Cheapflights users on 6/11. 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 10/2010:10 am
BUF
- STL
2 stops6h 40m
Southwest
Sat 10/249:20 am
STL
- BUF
1 stop3h 50m
Southwest
Deal found 6/11![Southwest logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 8/282:50 pm
BUF
- STL
1 stop19h 02m
Frontier
Mon 8/315:33 pm
STL
- BUF
2 stops24h 34m
Frontier
Deal found 6/11![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 June 12, 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 June 12, 2026.
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 10/55:45 pm
BUF
- STL
1 stop6h 25m
Southwest
Thu 10/85:05 am
STL
- BUF
1 stop8h 25m
Southwest
Deal found 6/8![Southwest logo]()
$303
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.
Tue 8/255:58 pm
BUF
- STL
1 stop5h 02m
United Airlines
Wed 8/269:30 am
STL
- BUF
1 stop6h 26m
United Airlines
Deal found 6/8![United Airlines logo]()
$328
This CheapOair deal was found by Cheapflights users on 6/11. 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.
Fri 7/177:57 pm
BUF
- STL
1 stop29h 02m
Frontier
Sun 7/194:09 pm
STL
- BUF
1 stop25h 57m
Frontier
Deal found 6/11![Frontier logo]()
$378
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.
Fri 9/186:30 am
BUF
- STL
2 stops12h 35m
Southwest
Sun 9/203:30 pm
STL
- BUF
1 stop7h 55m
Southwest
Deal found 6/8![Southwest logo]()
$381
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/115:58 pm
BUF
- STL
1 stop5h 02m
United Airlines
Wed 8/1212:59 pm
STL
- BUF
1 stop7h 08m
United Airlines
Deal found 6/11![United Airlines logo]()
$384
This Southwest deal was found by Cheapflights users on 6/11. 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 8/283:55 pm
BUF
- STL
2 stops7h 10m
Southwest
Mon 8/3110:10 am
STL
- BUF
2 stops7h 15m
Southwest
Deal found 6/11![Southwest logo]()
$381
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.
Sat 8/85:45 am
BUF
- STL
2 stops7h 50m
Southwest
Wed 8/1210:45 am
STL
- BUF
2 stops6h 00m
Southwest
Deal found 6/7![Southwest logo]()
$391
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 8/73:55 pm
BUF
- STL
2 stops7h 10m
Southwest
Wed 8/126:30 am
STL
- BUF
2 stops6h 50m
Southwest
Deal found 6/7![Southwest logo]()
$391
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.
Sat 8/226:45 am
BUF
- STL
2 stops9h 45m
Southwest
Mon 8/312:45 pm
STL
- BUF
2 stops6h 05m
Southwest
Deal found 6/7![Southwest logo]()
$406
Last-minute flights from Buffalo to St. LouisDiscover last-minute flight deals from Buffalo to St. Louis. Data last updated June 12, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to St. Louis. Data last updated June 12, 2026 and is based on user searches.
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.
Fri 7/32:50 pm
BUF
- STL
1 stop19h 02m
Frontier
Mon 7/64:57 pm
STL
- BUF
1 stop16h 32m
Frontier
Deal found 6/8![Frontier logo]()
$259
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 7/82:48 pm
BUF
- STL
1 stop27h 49m
Frontier
Wed 7/154:57 pm
STL
- BUF
1 stop16h 32m
Frontier
Deal found 6/8![Frontier logo]()
$187
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.
Thu 7/911:29 am
BUF
- STL
1 stop7h 08m
Frontier
Sat 7/114:57 pm
STL
- BUF
1 stop16h 32m
Frontier
Deal found 6/8![Frontier logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Thu 7/911:29 am
BUF
- STL
1 stop7h 08m
Frontier
Fri 7/104:57 pm
STL
- BUF
1 stop17h 36m
Frontier
Deal found 6/9![Frontier logo]()
$209
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 7/172:48 pm
BUF
- STL
1 stop19h 09m
Frontier
Wed 7/224:57 pm
STL
- BUF
1 stop16h 32m
Frontier
Deal found 6/7![Frontier logo]()
$191
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 7/172:48 pm
BUF
- STL
1 stop19h 09m
Frontier
Mon 7/204:57 pm
STL
- BUF
1 stop16h 32m
Frontier
Deal found 6/7![Frontier logo]()
$203
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 7/172:48 pm
BUF
- STL
1 stop19h 09m
Frontier
Tue 7/216:34 pm
STL
- BUF
1 stop18h 19m
Frontier
Deal found 6/7![Frontier logo]()
$269
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1810:44 am
BUF
- STL
1 stop7h 18m
American Airlines
Wed 7/226:43 am
STL
- BUF
1 stop4h 32m
American Airlines
Deal found 6/7![American Airlines logo]()
$275
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.
Sun 7/1911:29 am
BUF
- STL
1 stop7h 08m
Frontier
Fri 7/244:57 pm
STL
- BUF
1 stop17h 36m
Frontier
Deal found 6/7![Frontier logo]()
$281
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 June 12, 2026.
Search for one-way flight options from Buffalo to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 12, 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.
Sun 8/3011:35 am
BUF
- STL
1 stop22h 17m
Frontier
Deal found 6/7![Frontier logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Thu 7/211:35 am
BUF
- STL
1 stop6h 55m
Frontier
Deal found 6/9![Frontier logo]()
$118
This Southwest deal was found by Cheapflights users on 6/10. 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 10/62:25 pm
BUF
- STL
2 stops6h 10m
Southwest
Deal found 6/10![Southwest logo]()
$125
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.
Sat 9/195:45 am
BUF
- STL
1 stop6h 05m
Southwest
Deal found 6/7![Southwest logo]()
$126
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/196:00 am
BUF
- STL
2 stops7h 03m
United Airlines
Deal found 6/7![United Airlines logo]()
$143
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1911:29 am
BUF
- STL
1 stop7h 08m
Frontier
Deal found 6/8![Frontier logo]()
$184
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 6/222:50 pm
BUF
- STL
1 stop27h 40m
Frontier
Deal found 6/8![Frontier logo]()
$185
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Sun 7/57:06 am
BUF
- STL
1 stop6h 05m
United Airlines
Deal found 6/10![United Airlines logo]()
$204
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 6/224:10 pm
BUF
- STL
2 stops7h 35m
Southwest
Deal found 6/8![Southwest logo]()
$249
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 June 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $187 (Kiwi.com) |
One-way from | $111 (Kiwi.com) |
Popular in | June |
Cheapest in | December |
Average price | $641 |
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 June 12, 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
Mon 10/5
5:45 pm-11:10 pm
1 stop6h 25m
Lambert-St Louis
Thu 10/8
5:05 am-2:30 pm
1 stop8h 25m
$303
Quickest round-trip
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
Tue 8/25
5:58 pm-10:00 pm
1 stop5h 02m
Lambert-St Louis
Wed 8/26
9:30 am-4:56 pm
1 stop6h 26m
$328
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
Fri 7/17
7:57 pm-11:59 pm
1 stop29h 02m
Lambert-St Louis
Sun 7/19
4:09 pm-7:06 pm
1 stop25h 57m
$378
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
Fri 9/18
6:30 am-6:05 pm
2 stops12h 35m
Lambert-St Louis
Sun 9/20
3:30 pm-12:25 am
1 stop7h 55m
$381
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
Fri 8/28
3:55 pm-10:05 pm
2 stops7h 10m
Lambert-St Louis
Mon 8/31
10:10 am-6:25 pm
2 stops7h 15m
$381
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
Tue 8/11
5:58 pm-10:00 pm
1 stop5h 02m
Lambert-St Louis
Wed 8/12
12:59 pm-9:07 pm
1 stop7h 08m
$384
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
Sat 8/8
5:45 am-12:35 pm
2 stops7h 50m
Lambert-St Louis
Wed 8/12
10:45 am-5:45 pm
2 stops6h 00m
$391
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
Fri 8/7
3:55 pm-10:05 pm
2 stops7h 10m
Lambert-St Louis
Wed 8/12
6:30 am-2:20 pm
2 stops6h 50m
$391
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
Sat 8/22
6:45 am-3:30 pm
2 stops9h 45m
Lambert-St Louis
Mon 8/31
2:45 pm-9:50 pm
2 stops6h 05m
$406
Cheapest one-way
BuffaloSt. Louis
BUF - STL
BUFSTL
Buffalo
Sun 8/30
11:35 am-8:52 am
1 stop22h 17m
$111
Showing 1-10 of 20 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 June.
| 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 June is currently the most expensive (average of $641). 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 June 12, 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.
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Overall
7.9
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 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
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Alton
Farmington
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Buffalo and St. Louis flights
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Top 3 airlines flying from Buffalo to St. Louis
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$164 | Average$386 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$236 | Average$387 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$317 | Average$411 | FlexibilityNo cancel fee | On-time63% |