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Cheap flights from Buffalo to St. Louis from C$ 254

BUF — STL
19 Nov — 26 Nov1
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 5/113:05 p.m. -
1 stop6h 55m
Sat 7/116:25 a.m. -
1 stop6h 05m
Deal found 15/10C$ 436
Wed 25/115:40 p.m. -
1 stop7h 15m
Mon 30/115:30 a.m. -
1 stop3h 35m
Deal found 19/10C$ 474
Thu 5/1112:39 p.m. -
1 stop11h 37m
Sat 7/114:26 p.m. -
1 stop24h 26m
Deal found 17/10C$ 511
Tue 24/115:58 p.m. -
1 stop4h 42m
Fri 27/116:00 a.m. -
2 stops7h 20m
Deal found 15/10C$ 525
Sat 21/115:40 p.m. -
2 stops7h 15m
Fri 27/114:40 p.m. -
2 stops6h 10m
Deal found 15/10C$ 537
Thu 3/1212:45 p.m. -
2 stops7h 40m
Sun 6/1210:20 a.m. -
1 stop6h 35m
Deal found 15/10C$ 544

Find flight deals from Buffalo to St. Louis

Round-trip from

C$ 436

One-way from

C$ 254

Popular in

March

Cheapest in

December

Average price

C$ 558
Southwest
  • Southwest
  • 5/11-7/11
  • 2 total stops
  • 13h 00m total
  • Buffalo to St. Louis
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Southwest
  • Southwest
  • 9/11-31/12
  • 1 total stop
  • 3h 45m total
  • Buffalo to St. Louis
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 167 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 October 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
Quickest round-trip

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Mon 9/11

7:20 a.m.-10:05 a.m.

1 stop3h 45m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 254

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Tue 27/10

5:58 p.m.-9:40 p.m.

1 stop4h 42m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 391

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Thu 5/11

3:05 p.m.-9:00 p.m.

2 stops6h 55m

Lambert-St Louis

Sat 7/11

6:25 a.m.-1:30 p.m.

1 stop6h 05m

C$ 443

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Wed 25/11

5:40 p.m.-11:55 p.m.

1 stop7h 15m

Lambert-St Louis

Mon 30/11

5:30 a.m.-10:05 a.m.

1 stop3h 35m

C$ 474

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Thu 10/12

7:25 a.m.-1:40 p.m.

2 stops7h 15m

Lambert-St Louis

Sun 13/12

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

1 stop5h 35m

C$ 544

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Sat 13/2

6:25 p.m.-9:35 p.m.

1 stop4h 10m

Lambert-St Louis

Sun 21/2

9:50 p.m.-3:50 p.m.

2 stops17h 00m

C$ 550

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Wed 3/3

6:59 p.m.-11:39 p.m.

1 stop5h 40m

Lambert-St Louis

Sun 7/3

7:00 a.m.-1:24 p.m.

1 stop5h 24m

C$ 551

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Mon 1/2

12:45 p.m.-9:05 p.m.

2 stops9h 20m

Lambert-St Louis

Fri 5/2

10:50 a.m.-6:05 p.m.

2 stops6h 15m

C$ 602

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Fri 6/11

6:00 a.m.-11:47 a.m.

1 stop6h 47m

Lambert-St Louis

Mon 9/11

7:00 a.m.-1:26 p.m.

1 stop5h 26m

C$ 673

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/10

Sorted by cheapest first

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, December is the cheapest month in which you can book a flight from Buffalo to St. Louis (average of C$ 461). Flying from Buffalo to St. Louis in March is currently the most expensive (average of C$ 953). 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$ 448 and C$ 664 in November.
The cheapest round-trip price found within the last 5 days was C$ 436 on Southwest (5 Nov-7 Nov).

Related info for your journey

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

    For as low as C$ 443, Southwest can have you in St. Louis from Buffalo in 6h 55m. 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, December is the cheapest month in which you can book a flight from Buffalo to St. Louis (average of C$ 461). Flying from Buffalo to St. Louis in March is currently the most expensive (average of C$ 953). 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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How does Cheapflights help users find flights from Buffalo to St. Louis?

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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