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

For as low as C$ 447, Southwest can have you in St. Louis from Buffalo in 4h 09m. The distance between Buffalo and St. Louis is about 1081 km. This flight may include one or multiple stops.

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 mm per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

What is the cheapest time of day to fly from BUF to STL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Buffalo to St. Louis as you normally would.

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.

C$ 160+ Cheap Flights from Buffalo to St. Louis

Cheap flight deals from Buffalo to St. Louis

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Buffalo to St. Louis
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 2 September 2026.

Mon 9/117:20 a.m. -

1 stop3h 45m

Thu 12/115:45 a.m. -

1 stop3h 40m

Deal found 1/9C$ 422

Thu 22/1012:35 p.m. -

1 stop5h 35m

Thu 29/105:25 a.m. -

1 stop4h 00m

Deal found 2/9C$ 429

Fri 2/101:40 p.m. -

2 stops22h 52m

Wed 7/102:29 p.m. -

2 stops20h 29m

Deal found 2/9C$ 439

Fri 2/106:20 a.m. -

1 stop4h 09m

Wed 7/106:47 a.m. -

1 stop3h 48m

Deal found 2/9C$ 447

Fri 2/102:20 p.m. -

1 stop5h 40m

Wed 7/108:30 a.m. -

2 stops5h 50m

Deal found 2/9C$ 454

Wed 23/95:58 p.m. -

1 stop4h 40m

Sat 26/99:04 a.m. -

1 stop6h 39m

Deal found 2/9C$ 468

Wed 9/96:20 a.m. -

1 stop4h 09m

Wed 9/94:10 p.m. -

1 stop5h 25m

Deal found 31/8C$ 479

Wed 9/96:00 a.m. -

2 stops6h 20m

Wed 9/91:20 p.m. -

1 stop7h 25m

Deal found 31/8C$ 486

Thu 22/105:45 p.m. -

1 stop6h 35m

Wed 28/105:50 a.m. -

1 stop3h 35m

Deal found 31/8C$ 494

Find flight deals from Buffalo to St. Louis

Round-trip from	C$ 422
One-way from	C$ 160
Popular in	March
Cheapest in	January
Average price	C$ 446

Southwest
9/11-12/11
2 total stops
7h 25m total
Buffalo to St. Louis

Search Deals

Frontier
6/10
2 total stops
19h 19m total
Buffalo to St. Louis

Search Deals

Highest demand for flights based on searches. 19% potential increase in price (C$ 191 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease (C$ 46 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Mon 26/10

4:30 p.m.-11:15 p.m.

1 stop7h 45m

Lambert-St Louis

Mon 2/11

6:40 a.m.-12:00 p.m.

1 stop4h 20m

C$ 429

Quickest round-trip

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Fri 2/10

6:20 a.m.-9:29 a.m.

1 stop4h 09m

Lambert-St Louis

Wed 7/10

6:47 a.m.-11:35 a.m.

1 stop3h 48m

C$ 447

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Fri 2/10

2:20 p.m.-7:00 p.m.

1 stop5h 40m

Lambert-St Louis

Wed 7/10

8:30 a.m.-3:20 p.m.

2 stops5h 50m

C$ 454

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Thu 22/10

5:45 p.m.-11:20 p.m.

1 stop6h 35m

Lambert-St Louis

Wed 28/10

5:50 a.m.-10:25 a.m.

1 stop3h 35m

C$ 494

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Thu 22/10

6:00 a.m.-12:15 p.m.

2 stops7h 15m

Lambert-St Louis

Thu 29/10

5:25 a.m.-12:00 p.m.

2 stops5h 35m

C$ 524

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Wed 23/9

6:25 p.m.-9:45 p.m.

1 stop4h 20m

Lambert-St Louis

Sat 26/9

8:30 a.m.-5:40 p.m.

2 stops8h 10m

C$ 525

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Thu 29/10

8:00 a.m.-1:00 p.m.

1 stop6h 00m

Lambert-St Louis

Sun 1/11

3:51 p.m.-11:59 p.m.

1 stop7h 08m

C$ 529

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Thu 29/10

11:05 a.m.-9:00 p.m.

2 stops10h 55m

Lambert-St Louis

Sun 1/11

4:40 p.m.-11:45 p.m.

2 stops6h 05m

C$ 544

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Sun 25/10

8:00 a.m.-1:00 p.m.

1 stop6h 00m

Lambert-St Louis

Sun 1/11

5:45 a.m.-10:25 a.m.

1 stop3h 40m

C$ 551

Cheapest one-way

BuffaloSt. Louis

BUF Buffalo - STL Lambert-St Louis

BUFSTL

Buffalo

Thu 24/9

12:49 p.m.-4:34 p.m.

1 stop28h 45m

C$ 168

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 19 resultsSorted 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.

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, January is the cheapest month in which you can book a flight from Buffalo to St. Louis (average of C$ 446). Flying from Buffalo to St. Louis in March is currently the most expensive (average of C$ 939). 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$ 428 and C$ 536 in November.
The cheapest round-trip price found within the last 5 days was C$ 422 on Southwest (9 Nov-12 Nov).

Related info for your journey

How long is the flight from Buffalo to St. Louis?
For as low as C$ 447, Southwest can have you in St. Louis from Buffalo in 4h 09m. 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$ 446). Flying from Buffalo to St. Louis in March is currently the most expensive (average of C$ 939). 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.

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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?

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Cheap flights from Buffalo to St. Louis from C$ 160

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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Buffalo to St. Louis

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 2 September 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 2 September 2026.

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 2 September 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 2 September 2026.

Last-minute flights from Buffalo to St. LouisDiscover last-minute flight deals from Buffalo to St. Louis. Data last updated 2 September 2026 and is based on user searches.

Discover last-minute flight deals from Buffalo to St. Louis. Data last updated 2 September 2026 and is based on user searches.

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 2 September 2026.

Search for one-way flight options from Buffalo to St. Louis. Find affordable one-way fares based on user searches. Data last updated 2 September 2026.

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Use the filters below to find and compare flights from Buffalo to St. Louis that are best for you.

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.

Cheapflights Insights

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

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$ 428 and C$ 536 in November.The cheapest round-trip price found within the last 5 days was C$ 422 on Southwest (9 Nov-12 Nov).

Related info for your journey

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

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

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

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

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

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Direct flights to Missouri

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Buffalo and St. Louis flights

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How does Cheapflights help users find flights from Buffalo to St. Louis?

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

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

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

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Cheapest flights from Buffalo to St. Louis
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 2 September 2026.

Best flights from Buffalo to St. Louis
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 2 September 2026.

Last-minute flights from Buffalo to St. Louis
Discover last-minute flight deals from Buffalo to St. Louis. Data last updated 2 September 2026 and is based on user searches.

One-way flights from Buffalo to St. Louis
Search for one-way flight options from Buffalo to St. Louis. Find affordable one-way fares based on user searches. Data last updated 2 September 2026.

Buffalo to St. Louis flights typically cost between C$ 428 and C$ 536 in November.
The cheapest round-trip price found within the last 5 days was C$ 422 on Southwest (9 Nov-12 Nov).