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Cheap flights from Buffalo to St. Louis from C$ 232

BUF — STL
12 Dec — 19 Dec1
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

Mon 7/122:30 p.m. -
1 stop10h 42m
Wed 16/126:20 p.m. -
1 stop22h 20m
Deal found 7/11C$ 353
Wed 9/128:05 a.m. -
2 stops6h 35m
Tue 15/1210:30 a.m. -
1 stop3h 45m
Deal found 7/11C$ 481
Wed 9/128:05 a.m. -
2 stops6h 35m
Wed 16/127:15 a.m. -
1 stop5h 45m
Deal found 10/11C$ 495
Mon 7/123:55 p.m. -
2 stops7h 05m
Wed 16/123:35 p.m. -
1 stop5h 50m
Deal found 7/11C$ 502
Wed 2/122:00 p.m. -
1 stop4h 10m
Fri 4/1212:40 p.m. -
1 stop4h 30m
Deal found 9/11C$ 509
Tue 1/122:15 p.m. -
1 stop7h 11m
Thu 3/1210:14 a.m. -
1 stop4h 05m
Deal found 10/11C$ 516
Tue 15/127:25 a.m. -
2 stops7h 15m
Sat 19/125:25 a.m. -
1 stop7h 40m
Deal found 11/11C$ 532
Tue 22/124:30 p.m. -
1 stop5h 15m
Wed 23/124:10 p.m. -
2 stops6h 40m
Deal found 10/11C$ 545
Tue 22/126:59 p.m. -
1 stop5h 56m
Sun 27/123:48 p.m. -
1 stop7h 07m
Deal found 10/11C$ 548

Find flight deals from Buffalo to St. Louis

Round-trip from

C$ 353

One-way from

C$ 232

Popular in

March

Cheapest in

December

Average price

C$ 546
Frontier
  • Frontier
  • 7/12-16/12
  • 2 total stops
  • 33h 02m total
  • Buffalo to St. Louis
Search Deals
Frontier
  • Frontier
  • 24/12-31/12
  • 1 total stop
  • 7h 06m total
  • Buffalo to St. Louis
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 169 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 46 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2026
Search Deals

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

Tue 22/12

6:35 p.m.-12:41 a.m.

1 stop7h 06m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 233

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Tue 8/12

8:05 a.m.-12:40 p.m.

1 stop5h 35m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 238

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Tue 8/12

3:00 p.m.-10:15 p.m.

2 stops8h 15m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 245

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Tue 1/12

9:15 a.m.-1:30 p.m.

1 stop5h 15m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 245

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Thu 24/12

5:55 a.m.-1:45 p.m.

2 stops8h 50m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 266

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Tue 1/12

7:25 a.m.-1:45 p.m.

2 stops7h 20m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 280

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Tue 22/12

3:35 p.m.-11:55 p.m.

2 stops9h 20m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 302
Quickest round-trip

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Sat 28/11

6:10 a.m.-9:32 a.m.

1 stop4h 22m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 376

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Sun 29/11

9:00 a.m.-1:23 p.m.

1 stop5h 23m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 376

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Thu 26/11

5:45 a.m.-2:30 p.m.

2 stops9h 45m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 383

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/11

Showing 1-10 of 19 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, December is the cheapest month in which you can book a flight from Buffalo to St. Louis (average of C$ 484). Flying from Buffalo to St. Louis in March is currently the most expensive (average of C$ 962). 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$ 467 and C$ 664 in December.
The cheapest round-trip price found within the last 5 days was C$ 353 on Frontier (7 Dec-16 Dec).

Related info for your journey

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

    For as low as C$ 502, Southwest can have you in St. Louis from Buffalo in 7h 05m. 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$ 484). Flying from Buffalo to St. Louis in March is currently the most expensive (average of C$ 962). 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

Browse thousands of different options on Cheapflights for your next trip

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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