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Cheap flights from St. Louis to Buffalo from $112

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 12/24. 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
7:52 am - 8:30 pm
STL
-
BUF
11h 38m1 stop
Frontier Logo
11:44 am - 11:19 pm
BUF
-
STL
12h 35m1 stop
$197Frontier
Fri, Mar 6 - Mon, Mar 9
Frontier Logo
7:52 am - 8:30 pm
STL
-
BUF
11h 38m1 stop
Frontier Logo
9:25 pm - 7:07 am
BUF
-
STL
10h 42m1 stop
$232Frontier
Fri, Mar 6 - Sun, Mar 8
Frontier Logo
3:49 pm - 10:49 am
STL
-
BUF
18h 00m1 stop
Frontier Logo
12:50 pm - 1:19 pm
BUF
-
STL
25h 29m1 stop
$273Frontier
Thu, Mar 5 - Sun, Mar 8
Delta Logo
6:30 am - 2:08 pm
STL
-
BUF
6h 38m1 stop
Delta Logo
6:00 am - 12:23 pm
BUF
-
STL
7h 23m1 stop
$282Delta
Mon, Feb 23 - Wed, Feb 25
Southwest Logo
7:50 pm - 8:05 am
STL
-
BUF
11h 15m1 stop
Southwest Logo
5:50 am - 12:45 pm
BUF
-
STL
7h 55m2 stops
$293Southwest
Mon, Feb 23 - Wed, Feb 25
Frontier Logo
7:52 am - 8:30 pm
STL
-
BUF
11h 38m1 stop
Frontier Logo
12:50 pm - 7:11 pm
BUF
-
STL
31h 21m2 stops
$299Frontier
Fri, Mar 6 - Mon, Mar 9
Frontier Logo
3:49 pm - 10:49 am
STL
-
BUF
18h 00m1 stop
Frontier Logo
9:25 pm - 11:19 pm
BUF
-
STL
26h 54m1 stop
$305Frontier
Thu, Mar 5 - Mon, Mar 9
Frontier Logo
3:49 pm - 10:49 am
STL
-
BUF
18h 00m1 stop
Frontier Logo
12:50 pm - 7:11 pm
BUF
-
STL
31h 21m2 stops
$317Frontier
Thu, Mar 5 - Mon, Mar 9
Delta Logo
5:15 pm - 11:14 pm
STL
-
BUF
4h 59m1 stop
Delta Logo
1:00 pm - 4:42 pm
BUF
-
STL
4h 42m1 stop
$319Delta
Wed, Mar 11 - Mon, Mar 16
Southwest Logo
2:35 pm - 9:15 pm
STL
-
BUF
5h 40m2 stops
Southwest Logo
12:20 pm - 6:45 pm
BUF
-
STL
7h 25m2 stops
$322Southwest
Mon, Feb 23 - Wed, Feb 25

United Airlines flights from St. Louis to Buffalo

Our best United Airlines deals on St. Louis to Buffalo flight tickets
United Airlines
Dec 24
STL3:10 pmLambert-St Louis
4h 44m
1 stop
BUF8:54 pmBuffalo
Jan 13
BUF2:49 pmBuffalo
10h 10m
2 stops
STL11:59 pmLambert-St Louis
$245
Find similar
United Airlines
Jan 8
STL11:22 amLambert-St Louis
5h 18m
1 stop
BUF5:40 pmBuffalo
Jan 12
BUF2:49 pmBuffalo
9h 09m
2 stops
STL10:58 pmLambert-St Louis
$382
Find similar
United Airlines
Jan 8
STL6:30 amLambert-St Louis
5h 54m
1 stop
BUF1:24 pmBuffalo
Jan 12
BUF2:49 pmBuffalo
9h 09m
2 stops
STL10:58 pmLambert-St Louis
$388
Find similar

Delta flights from St. Louis to Buffalo

Our best Delta deals on St. Louis to Buffalo flight tickets
Delta
Dec 24
STL6:00 amLambert-St Louis
6h 04m
1 stop
BUF1:04 pmBuffalo
Jan 13
BUF2:56 pmBuffalo
6h 10m
1 stop
STL8:06 pmLambert-St Louis
$240
Find similar
Delta
Feb 23
STL6:30 amLambert-St Louis
6h 38m
1 stop
BUF2:08 pmBuffalo
Feb 25
BUF6:00 amBuffalo
7h 23m
1 stop
STL12:23 pmLambert-St Louis
$282
Find similar
Delta
Mar 11
STL5:15 pmLambert-St Louis
4h 59m
1 stop
BUF11:14 pmBuffalo
Mar 16
BUF1:00 pmBuffalo
4h 42m
1 stop
STL4:42 pmLambert-St Louis
$319
Find similar

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 December 16, 2025.
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

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Fri 3/6

7:52 am-8:30 pm

1 stop11h 38m

Buffalo

Mon 3/9

11:44 am-11:19 pm

1 stop12h 35m

$197

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Fri 3/6

7:52 am-8:30 pm

1 stop11h 38m

Buffalo

Sun 3/8

9:25 pm-7:07 am

1 stop10h 42m

$232

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Thu 3/5

3:49 pm-10:49 am

1 stop18h 00m

Buffalo

Sun 3/8

12:50 pm-1:19 pm

1 stop25h 29m

$273

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Mon 2/23

6:30 am-2:08 pm

1 stop6h 38m

Buffalo

Wed 2/25

6:00 am-12:23 pm

1 stop7h 23m

$282

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Mon 2/23

7:50 pm-8:05 am

1 stop11h 15m

Buffalo

Wed 2/25

5:50 am-12:45 pm

2 stops7h 55m

$293

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Fri 3/6

7:52 am-8:30 pm

1 stop11h 38m

Buffalo

Mon 3/9

12:50 pm-7:11 pm

2 stops31h 21m

$299

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Thu 3/5

3:49 pm-10:49 am

1 stop18h 00m

Buffalo

Mon 3/9

9:25 pm-11:19 pm

1 stop26h 54m

$305

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Thu 3/5

3:49 pm-10:49 am

1 stop18h 00m

Buffalo

Mon 3/9

12:50 pm-7:11 pm

2 stops31h 21m

$317

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Wed 3/11

5:15 pm-11:14 pm

1 stop4h 59m

Buffalo

Mon 3/16

1:00 pm-4:42 pm

1 stop4h 42m

$319

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Mon 2/23

2:35 pm-9:15 pm

2 stops5h 40m

Buffalo

Wed 2/25

12:20 pm-6:45 pm

2 stops7h 25m

$322

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 January, then book flights to Buffalo from St. Louis during November instead. Flights to Buffalo in November, while not as cheap as those in January, still average around $331.

What is the cheapest day to depart on your flight to Buffalo?

Our data shows that Wednesday is the least expensive day to fly to Buffalo. Tickets to fly out on this day can be as low as $332. Flights from St. Louis to Buffalo on a Saturday will generally be more expensive and average around $386. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Buffalo?

In the evening is the cheapest time of day to fly from St. Louis to Buffalo when you can find flight prices for as low as $248. Flying to Buffalo in the evening is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to Buffalo, so prices are often more expensive at around $371 per ticket.

How far in advance should I book a flight to Buffalo?

You are more likely to see cheaper flights to Buffalo from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Buffalo for around $377 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buffalo from St. Louis for as low as $285 on momondo.

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 45m

Direct flights

None
The fastest flight from St. Louis to Buffalo takes 3h 45m
There are no direct flights from St. Louis to Buffalo. There are no popular flight routes from St. Louis to Buffalo.
Search flight deals

  • 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 45m 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
United AirlinesPriceFrom $167Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
American AirlinesPriceFrom $221Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.9
8,008 reviews
Search Delta flights
SouthwestPriceFrom $306Free CancellationRating
7.9
4,250 reviews
Search Southwest flights

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
Lockport
West Seneca
Bowmansville
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.

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