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Cheap flights from Buffalo to St. Louis from C$ 220

BUF — STL
31 Oct — 7 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

Tue 27/104:00 p.m. -
1 stop6h 25m
Tue 3/116:20 a.m. -
1 stop3h 20m
Deal found 29/9C$ 439
Fri 4/126:09 p.m. -
1 stop5h 28m
Mon 7/121:43 p.m. -
1 stop7h 12m
Deal found 27/9C$ 467
Fri 4/127:25 a.m. -
2 stops7h 20m
Mon 7/1211:20 a.m. -
1 stop8h 25m
Deal found 27/9C$ 474
Thu 10/1212:45 p.m. -
2 stops7h 40m
Sun 13/1210:20 a.m. -
1 stop6h 35m
Deal found 28/9C$ 508
Sun 1/117:20 a.m. -
1 stop3h 45m
Fri 6/115:45 a.m. -
1 stop3h 40m
Deal found 29/9C$ 523
Thu 29/106:00 a.m. -
2 stops7h 15m
Sat 31/107:00 a.m. -
2 stops8h 05m
Deal found 27/9C$ 530
Fri 16/1011:53 a.m. -
1 stop5h 04m
Mon 19/105:00 a.m. -
1 stop4h 53m
Deal found 27/9C$ 571

Find flight deals from Buffalo to St. Louis

Round-trip from

C$ 439

One-way from

C$ 220

Popular in

March

Cheapest in

January

Average price

C$ 690
Southwest
  • Southwest
  • 27/10-3/11
  • 2 total stops
  • 9h 45m total
  • Buffalo to St. Louis
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United Airlines
  • United Airlines
  • 7/11-31/12
  • 1 total stop
  • 4h 51m total
  • Buffalo to St. Louis
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 161 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).
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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

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Sat 7/11

2:55 p.m.-9:40 p.m.

2 stops7h 45m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 227

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Fri 6/11

9:15 a.m.-7:00 p.m.

1 stop10h 45m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 249

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Sun 17/1

5:50 a.m.-1:50 p.m.

2 stops9h 00m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 290

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Mon 12/10

3:53 p.m.-8:51 p.m.

1 stop5h 58m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 354

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Sun 11/10

12:02 p.m.-5:19 p.m.

1 stop6h 17m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 354

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Tue 13/10

1:48 p.m.-7:41 p.m.

1 stop6h 53m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 354

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Sun 11/10

6:30 a.m.-3:21 p.m.

2 stops9h 51m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 432

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Tue 27/10

4:00 p.m.-9:25 p.m.

1 stop6h 25m

Lambert-St Louis

Tue 3/11

6:20 a.m.-10:40 a.m.

1 stop3h 20m

C$ 439

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Fri 4/12

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

2 stops7h 20m

Lambert-St Louis

Mon 7/12

11:20 a.m.-8:45 p.m.

1 stop8h 25m

C$ 474
Quickest round-trip

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Mon 12/10

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

1 stop4h 45m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 481

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/9

Showing 1-10 of 16 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$ 456). Flying from Buffalo to St. Louis in March is currently the most expensive (average of C$ 960). 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 typical for this route at the moment.

Buffalo to St. Louis flights typically cost between C$ 413 and C$ 775 in October.
The cheapest round-trip price found within the last 5 days was C$ 439 on Southwest (27 Oct-3 Nov).

Related info for your journey

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

    For as low as C$ 515, Southwest can have you in St. Louis from Buffalo in 4h 11m. The distance between Buffalo and St. Louis is about 1081 km. This flight may include one or multiple stops.

  • 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$ 456). Flying from Buffalo to St. Louis in March is currently the most expensive (average of C$ 960). 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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