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Cheap flights from Buffalo to St. Louis from C$ 167

BUF — STL
7 Oct — 14 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Buffalo to St. Louis

Enter your travel dates to find the best prices.

Cheapest flights from Buffalo to St. Louis

Thu 22/1012:35 p.m. -
1 stop5h 35m
Thu 29/105:25 a.m. -
1 stop4h 00m
Deal found 2/9C$ 428
Thu 8/107:35 p.m. -
1 stop4h 45m
Mon 12/107:50 p.m. -
2 stops11h 35m
Deal found 3/9C$ 443
Tue 20/107:00 p.m. -
1 stop4h 05m
Sat 24/103:40 p.m. -
1 stop5h 05m
Deal found 4/9C$ 477
Wed 21/102:00 p.m. -
1 stop4h 40m
Wed 28/102:25 p.m. -
2 stops7h 00m
Deal found 4/9C$ 484
Thu 29/1012:54 p.m. -
1 stop11h 22m
Sun 1/114:26 p.m. -
2 stops19h 37m
Deal found 7/9C$ 495
Sat 7/112:30 p.m. -
1 stop6h 55m
Mon 9/115:10 p.m. -
1 stop5h 35m
Deal found 5/9C$ 499
Mon 19/102:20 p.m. -
1 stop5h 40m
Mon 26/105:40 p.m. -
1 stop5h 30m
Deal found 4/9C$ 522

Find flight deals from Buffalo to St. Louis

Round-trip from

C$ 428

One-way from

C$ 167

Popular in

March

Cheapest in

January

Average price

C$ 499
Southwest
  • Southwest
  • 22/10-29/10
  • 2 total stops
  • 9h 35m total
  • Buffalo to St. Louis
Search Deals
Frontier
  • Frontier
  • 24/9-31/12
  • 1 total stop
  • 28h 45m total
  • Buffalo to St. Louis
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 183 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease (C$ 45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
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

Price

Cheapest round-trip

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Thu 24/9

6:30 a.m.-1:05 p.m.

1 stop7h 35m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 214

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Thu 24/9

12:49 p.m.-1:10 p.m.

2 stops25h 21m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 217

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Mon 12/10

7:00 a.m.-12:13 p.m.

1 stop6h 13m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 261

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Fri 9/10

2:44 p.m.-11:13 p.m.

2 stops33h 29m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 261
Quickest round-trip

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Wed 30/9

9:45 a.m.-1:55 p.m.

1 stop5h 10m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 261

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Thu 22/10

12:35 p.m.-5:10 p.m.

1 stop5h 35m

Lambert-St Louis

Thu 29/10

5:25 a.m.-10:25 a.m.

1 stop4h 00m

C$ 428

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Thu 8/10

7:35 p.m.-11:20 p.m.

1 stop4h 45m

Lambert-St Louis

Mon 12/10

7:50 p.m.-8:25 a.m.

2 stops11h 35m

C$ 443

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Tue 20/10

7:00 p.m.-10:05 p.m.

1 stop4h 05m

Lambert-St Louis

Sat 24/10

3:40 p.m.-9:45 p.m.

1 stop5h 05m

C$ 477

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Wed 21/10

2:00 p.m.-5:40 p.m.

1 stop4h 40m

Lambert-St Louis

Wed 28/10

2:25 p.m.-10:25 p.m.

2 stops7h 00m

C$ 484

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Sat 7/11

2:30 p.m.-8:25 p.m.

1 stop6h 55m

Lambert-St Louis

Mon 9/11

5:10 p.m.-11:45 p.m.

1 stop5h 35m

C$ 499

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 12 resultsSorted by cheapest first
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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.
Estimated round-trip price

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, January is the cheapest month in which you can book a flight from Buffalo to St. Louis (average of C$ 444). Flying from Buffalo to St. Louis in March is currently the most expensive (average of C$ 935). 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?

Airfare is below average for this route at the moment.

Buffalo to St. Louis flights typically cost between C$ 444 and C$ 571 in October.
The cheapest round-trip price found within the last 5 days was C$ 428 on Southwest (22 Oct-29 Oct).

Related info for your journey

  • How long is the flight from Buffalo to St. Louis?

    For as low as C$ 428, Southwest can have you in St. Louis from Buffalo in 5h 35m. The distance between Buffalo and St. Louis is about 1081 km.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Buffalo to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, January is the cheapest month in which you can book a flight from Buffalo to St. Louis (average of C$ 444). Flying from Buffalo to St. Louis in March is currently the most expensive (average of C$ 935). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Chesterfield

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Alternative routes for Buffalo to St. Louis

Buffalo to Kansas City flights

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Cheapflights makes it easy to find Buffalo to St. Louis flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Buffalo to St. Louis?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Buffalo to St. Louis.

Can Cheapflights find flights from Buffalo to St. Louis with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Buffalo to St. Louis, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Buffalo to St. Louis become cheaper?

Yes! Start tracking prices for Buffalo to St. Louis flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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