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Cheap flights from St. Louis to Buffalo from $62

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Buffalo departing on 6/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from St. Louis to Buffalo

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
5:06 pm - 10:55 am
STL
-
BUF
16h 49m
1 stop
Frontier Logo
11:35 am - 5:30 pm
BUF
-
STL
6h 55m
1 stop
$121Frontier
Mon, Jun 22 - Thu, Jun 25
Frontier Logo
5:27 pm - 11:10 am
STL
-
BUF
16h 43m
1 stop
Frontier Logo
11:50 am - 5:30 pm
BUF
-
STL
6h 40m
1 stop
$124Frontier
Mon, Jun 8 - Tue, Jun 16
Frontier Logo
5:06 pm - 10:55 am
STL
-
BUF
16h 49m
1 stop
Frontier Logo
11:35 am - 5:30 pm
BUF
-
STL
6h 55m
1 stop
$126Frontier
Mon, Jun 29 - Thu, Jul 2
Frontier Logo
5:27 pm - 11:10 am
STL
-
BUF
16h 43m
1 stop
Frontier Logo
11:35 am - 5:30 pm
BUF
-
STL
6h 55m
1 stop
$150Frontier
Mon, Jun 8 - Thu, Jun 11
Frontier Logo
6:33 pm - 1:53 pm
STL
-
BUF
18h 20m
1 stop
Frontier Logo
2:50 pm - 8:57 am
BUF
-
STL
19h 07m
1 stop
$152Frontier
Tue, Aug 4 - Fri, Aug 7
Frontier Logo
5:27 pm - 11:10 am
STL
-
BUF
16h 43m
1 stop
Frontier Logo
11:50 am - 5:30 pm
BUF
-
STL
6h 40m
1 stop
$159Frontier
Mon, Jun 8 - Tue, Jun 16
Frontier Logo
4:52 pm - 11:33 am
STL
-
BUF
17h 41m
1 stop
Frontier Logo
11:35 am - 8:57 am
BUF
-
STL
22h 22m
1 stop
$162Frontier
Fri, Jul 10 - Thu, Jul 16
Frontier Logo
5:27 pm - 7:12 pm
STL
-
BUF
24h 45m
2 stops
Frontier Logo
11:50 am - 8:52 am
BUF
-
STL
22h 02m
1 stop
$171Frontier
Mon, Jun 8 - Tue, Jun 16
Frontier Logo
5:06 pm - 11:34 am
STL
-
BUF
17h 28m
1 stop
Frontier Logo
2:50 pm - 5:30 pm
BUF
-
STL
27h 40m
1 stop
$179Frontier
Fri, Jun 12 - Wed, Jun 17
Frontier Logo
6:31 pm - 7:12 pm
STL
-
BUF
23h 41m
2 stops
Frontier Logo
11:50 am - 5:30 pm
BUF
-
STL
6h 40m
1 stop
$189Frontier
Tue, Jun 9 - Tue, Jun 16

American Airlines flights from St. Louis to Buffalo

Our best American Airlines deals on St. Louis to Buffalo flight tickets
American Airlines
Sep 30
STL7:32 amLambert-St Louis
4h 18m
1 stop
BUF12:50 pmBuffalo
Oct 13
BUF6:49 pmBuffalo
5h 36m
1 stop
STL11:25 pmLambert-St Louis
$297
American Airlines
May 24
STL1:45 pmLambert-St Louis
7h 12m
1 stop
BUF9:57 pmBuffalo
Jun 17
BUF10:44 amBuffalo
7h 14m
1 stop
STL4:58 pmLambert-St Louis
$317
American Airlines
May 26
STL10:45 amLambert-St Louis
4h 40m
1 stop
BUF4:25 pmBuffalo
May 28
BUF1:56 pmBuffalo
7h 56m
1 stop
STL8:52 pmLambert-St Louis
$447

Frontier flights from St. Louis to Buffalo

Our best Frontier deals on St. Louis to Buffalo flight tickets
Frontier
Jun 22
STL5:06 pmLambert-St Louis
16h 49m
1 stop
BUF10:55 amBuffalo
Jun 25
BUF11:35 amBuffalo
6h 55m
1 stop
STL5:30 pmLambert-St Louis
$121
Frontier
Jun 8
STL5:27 pmLambert-St Louis
16h 43m
1 stop
BUF11:10 amBuffalo
Jun 16
BUF11:50 amBuffalo
6h 40m
1 stop
STL5:30 pmLambert-St Louis
$124
Frontier
Jun 29
STL5:06 pmLambert-St Louis
16h 49m
1 stop
BUF10:55 amBuffalo
Jul 2
BUF11:35 amBuffalo
6h 55m
1 stop
STL5:30 pmLambert-St Louis
$126

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Buffalo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 12, 2026.
Use the filters below to find and compare flights from St. Louis to Buffalo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Mon 6/22

5:06 pm-10:55 am

1 stop16h 49m

Buffalo

Thu 6/25

11:35 am-5:30 pm

1 stop6h 55m

$121
Quickest round-trip

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Mon 6/8

5:27 pm-11:10 am

1 stop16h 43m

Buffalo

Tue 6/16

11:50 am-5:30 pm

1 stop6h 40m

$124

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Mon 6/29

5:06 pm-10:55 am

1 stop16h 49m

Buffalo

Thu 7/2

11:35 am-5:30 pm

1 stop6h 55m

$126

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Mon 6/8

5:27 pm-11:10 am

1 stop16h 43m

Buffalo

Thu 6/11

11:35 am-5:30 pm

1 stop6h 55m

$150

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Tue 8/4

6:33 pm-1:53 pm

1 stop18h 20m

Buffalo

Fri 8/7

2:50 pm-8:57 am

1 stop19h 07m

$152

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Mon 6/8

5:27 pm-11:10 am

1 stop16h 43m

Buffalo

Tue 6/16

11:50 am-5:30 pm

1 stop6h 40m

$159

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Fri 7/10

4:52 pm-11:33 am

1 stop17h 41m

Buffalo

Thu 7/16

11:35 am-8:57 am

1 stop22h 22m

$162

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Mon 6/8

5:27 pm-7:12 pm

2 stops24h 45m

Buffalo

Tue 6/16

11:50 am-8:52 am

1 stop22h 02m

$171

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Fri 6/12

5:06 pm-11:34 am

1 stop17h 28m

Buffalo

Wed 6/17

2:50 pm-5:30 pm

1 stop27h 40m

$179

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Tue 6/9

6:31 pm-7:12 pm

2 stops23h 41m

Buffalo

Tue 6/16

11:50 am-5:30 pm

1 stop6h 40m

$189

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Buffalo from

How to get the cheapest flight ticket from St. Louis to Buffalo

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between St. Louis and Buffalo?

What is the cheapest month to fly to Buffalo?

If you aren’t able to travel during the month of September, then book flights to Buffalo from St. Louis during January instead. Flights to Buffalo in January, while not as cheap as those in September, still average around $329.

How have St. Louis to Buffalo flight prices changed over time?

When to book flights from St. Louis to Buffalo

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Buffalo according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Buffalo (STL to BUF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Buffalo

Fastest flight time

3h 26m

Direct flights

None
The fastest flight from St. Louis to Buffalo takes 3h 26m
There are no direct flights from St. Louis to Buffalo. There are no popular flight routes from St. Louis to Buffalo.
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Frequently asked questions about flying from St. Louis to Buffalo

  • How far is Lambert-St Louis to Buffalo by plane?

    Buffalo is 660.3 mi away from Lambert-St Louis. Typically, this will take 3h 26m by plane in normal conditions.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Buffalo Airport?

    Prices for flights from Lambert-St Louis Airport to Buffalo Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Buffalo Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Buffalo Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Buffalo Airport.

  • What documentation or ID do you need to fly to Buffalo Airport?

    The travel and health documents required for your trip to Buffalo Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Buffalo Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from St. Louis to Buffalo?

Best airlines flying from St. Louis to Buffalo

Compare and see reviews for airlines that fly from St. Louis to Buffalo with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $221Free CancellationRating
7.1
11,661 reviews
Search American Airlines flights
DeltaPriceFrom $238Free CancellationRating
7.9
8,446 reviews
Search Delta flights
SouthwestPriceFrom $298Free CancellationRating
8.0
4,295 reviews
Search Southwest flights

  • Southwest Flights From St. Louis to Buffalo

    Across 2 Southwest flights from St. Louis to Buffalo this week, the average price was $483, with the best Southwest deals starting from $298 round-trip. 4,295 users have rated Southwest on momondo, with an average score of 8.0/10.

Traveling to a place near Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Batavia
Cheektowaga
Amherst
Tonawanda
Grand Island
Williamsville
Orchard Park
Bowmansville
West Seneca
Lockport
East Aurora
Eden
Angola

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Buffalo?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Buffalo. momondo saves you time and could save you money on your trip.

Can I find flights from St. Louis to Buffalo with flexible booking policies on momondo?

Yes. All flights to Buffalo from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from St. Louis to Buffalo?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Buffalo from St. Louis.

I’m not ready to book a flight from St. Louis to Buffalo right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Buffalo from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Buffalo trip

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