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Cheap flights from St. Louis to Buffalo from $86

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 9/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Buffalo

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
4:30 pm - 12:59 pmSTL  Lambert-St Louis-BUF Buffalo
19h 29m2 stops Orlando Atlanta Hartsfield-Jackson
Frontier Logo
1:44 pm - 9:40 amBUF  Buffalo-STL Lambert-St Louis
20h 56m1 stop Atlanta Hartsfield-Jackson
$225Frontier
Thu, Oct 22 - Mon, Oct 26
United Airlines Logo
9:43 am - 4:55 pmSTL  Lambert-St Louis-BUF Buffalo
6h 12m1 stop Chicago O'Hare Intl
United Airlines Logo
10:53 am - 4:06 pmBUF  Buffalo-STL Lambert-St Louis
6h 13m1 stop Newark
$227United Airlines
Tue, Sep 8 - Thu, Sep 10
American Airlines Logo
11:01 am - 5:18 pmSTL  Lambert-St Louis-BUF Buffalo
5h 17m1 stop Chicago O'Hare Intl
American Airlines Logo
7:35 pm - 11:43 pmBUF  Buffalo-STL Lambert-St Louis
5h 08m1 stop Philadelphia
$227American Airlines
Tue, Sep 29 - Tue, Oct 13
American Airlines Logo
10:37 am - 4:44 pmSTL  Lambert-St Louis-BUF Buffalo
5h 07m1 stop Washington, D.C. Reagan-National
American Airlines Logo
5:13 am - 10:04 amBUF  Buffalo-STL Lambert-St Louis
5h 51m1 stop Washington, D.C. Reagan-National
$227American Airlines
Sat, Dec 12 - Mon, Dec 14
Delta Logo
1:55 pm - 7:04 pmSTL  Lambert-St Louis-BUF Buffalo
4h 09m1 stop Detroit Metropolitan Wayne County
Delta Logo
6:10 am - 9:44 amBUF  Buffalo-STL Lambert-St Louis
4h 34m1 stop Detroit Metropolitan Wayne County
$227Delta
Tue, Sep 29 - Tue, Oct 13
Southwest Logo
6:25 am - 1:30 pmSTL  Lambert-St Louis-BUF Buffalo
6h 05m1 stop Baltimore/Washington
Southwest Logo
7:25 am - 1:45 pmBUF  Buffalo-STL Lambert-St Louis
7h 20m2 stops Baltimore/Washington Atlanta Hartsfield-Jackson
$232Southwest
Sat, Dec 12 - Mon, Dec 14
Southwest Logo
9:35 am - 9:50 pmSTL  Lambert-St Louis-BUF Buffalo
11h 15m1 stop Tampa
Southwest Logo
3:50 pm - 10:25 pmBUF  Buffalo-STL Lambert-St Louis
7h 35m2 stops Baltimore/Washington Tampa
$238Southwest
Tue, Sep 8 - Thu, Sep 10
Frontier Logo
2:29 pm - 12:55 pmSTL  Lambert-St Louis-BUF Buffalo
21h 26m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
1:40 pm - 11:32 amBUF  Buffalo-STL Lambert-St Louis
22h 52m2 stops Atlanta Hartsfield-Jackson Las Vegas Harry Reid Intl
$245Frontier
Fri, Sep 18 - Mon, Sep 21
United Airlines Logo
12:27 pm - 6:58 pmSTL  Lambert-St Louis-BUF Buffalo
5h 31m1 stop Newark
United Airlines Logo
6:55 am - 12:02 pmBUF  Buffalo-STL Lambert-St Louis
6h 07m1 stop Chicago O'Hare Intl
$305United Airlines
Mon, Aug 31 - Wed, Sep 2
Delta Logo
6:05 pm - 11:59 pmSTL  Lambert-St Louis-BUF Buffalo
4h 54m1 stop Detroit Metropolitan Wayne County
Delta Logo
6:10 am - 9:44 amBUF  Buffalo-STL Lambert-St Louis
4h 34m1 stop Detroit Metropolitan Wayne County
$342Delta
Mon, Oct 12 - Fri, Oct 16

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Frontier flights from St. Louis to Buffalo

Our best Frontier deals on St. Louis to Buffalo flight tickets
Frontier
Oct 22
STL4:30 pmLambert-St Louis
19h 29m
2 stops
BUF12:59 pmBuffalo
Oct 26
BUF1:44 pmBuffalo
20h 56m
1 stop
STL9:40 amLambert-St Louis
$225
Frontier
Sep 18
STL2:29 pmLambert-St Louis
21h 26m
1 stop
BUF12:55 pmBuffalo
Sep 21
BUF1:40 pmBuffalo
22h 52m
2 stops
STL11:32 amLambert-St Louis
$245
Frontier
Sep 18
STL2:29 pmLambert-St Louis
21h 26m
1 stop
BUF12:55 pmBuffalo
Sep 21
BUF1:40 pmBuffalo
22h 52m
2 stops
STL11:32 amLambert-St Louis
$246

Delta flights from St. Louis to Buffalo

Our best Delta deals on St. Louis to Buffalo flight tickets
Delta
Sep 29
STL1:55 pmLambert-St Louis
4h 09m
1 stop
BUF7:04 pmBuffalo
Oct 13
BUF6:10 amBuffalo
4h 34m
1 stop
STL9:44 amLambert-St Louis
$227
Delta
Oct 16
STL6:05 pmLambert-St Louis
4h 54m
1 stop
BUF11:59 pmBuffalo
Oct 18
BUF6:10 amBuffalo
4h 34m
1 stop
STL9:44 amLambert-St Louis
$366
Delta
Aug 29
STL6:09 pmLambert-St Louis
4h 00m
1 stop
BUF11:09 pmBuffalo
Sep 1
BUF6:40 amBuffalo
3h 57m
1 stop
STL9:37 amLambert-St Louis
$379

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 August 17, 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 Lambert-St Louis - BUF Buffalo

STLBUF

Lambert-St Louis

Thu 10/22

4:30 pm-12:59 pm

2 stops19h 29m

Buffalo

Mon 10/26

1:44 pm-9:40 am

1 stop20h 56m

$225

St. LouisBuffalo

STL Lambert-St Louis - BUF Buffalo

STLBUF

Lambert-St Louis

Tue 9/8

9:43 am-4:55 pm

1 stop6h 12m

Buffalo

Thu 9/10

10:53 am-4:06 pm

1 stop6h 13m

$227

St. LouisBuffalo

STL Lambert-St Louis - BUF Buffalo

STLBUF

Lambert-St Louis

Tue 9/29

11:01 am-5:18 pm

1 stop5h 17m

Buffalo

Tue 10/13

7:35 pm-11:43 pm

1 stop5h 08m

$227

St. LouisBuffalo

STL Lambert-St Louis - BUF Buffalo

STLBUF

Lambert-St Louis

Sat 12/12

10:37 am-4:44 pm

1 stop5h 07m

Buffalo

Mon 12/14

5:13 am-10:04 am

1 stop5h 51m

$227
Quickest round-trip

St. LouisBuffalo

STL Lambert-St Louis - BUF Buffalo

STLBUF

Lambert-St Louis

Tue 9/29

1:55 pm-7:04 pm

1 stop4h 09m

Buffalo

Tue 10/13

6:10 am-9:44 am

1 stop4h 34m

$227

St. LouisBuffalo

STL Lambert-St Louis - BUF Buffalo

STLBUF

Lambert-St Louis

Sat 12/12

6:25 am-1:30 pm

1 stop6h 05m

Buffalo

Mon 12/14

7:25 am-1:45 pm

2 stops7h 20m

$232

St. LouisBuffalo

STL Lambert-St Louis - BUF Buffalo

STLBUF

Lambert-St Louis

Tue 9/8

9:35 am-9:50 pm

1 stop11h 15m

Buffalo

Thu 9/10

3:50 pm-10:25 pm

2 stops7h 35m

$238

St. LouisBuffalo

STL Lambert-St Louis - BUF Buffalo

STLBUF

Lambert-St Louis

Fri 9/18

2:29 pm-12:55 pm

1 stop21h 26m

Buffalo

Mon 9/21

1:40 pm-11:32 am

2 stops22h 52m

$245

St. LouisBuffalo

STL Lambert-St Louis - BUF Buffalo

STLBUF

Lambert-St Louis

Mon 8/31

12:27 pm-6:58 pm

1 stop5h 31m

Buffalo

Wed 9/2

6:55 am-12:02 pm

1 stop6h 07m

$305

St. LouisBuffalo

STL Lambert-St Louis - BUF Buffalo

STLBUF

Lambert-St Louis

Mon 10/12

6:05 pm-11:59 pm

1 stop4h 54m

Buffalo

Fri 10/16

6:10 am-9:44 am

1 stop4h 34m

$342

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?

Prices are currently low for flights on this route.

Typical prices usually range from $308 to $460.
The lowest price recently found on this route was $215.

What is the cheapest month to fly to Buffalo?

If you aren’t able to travel during the month of February, then book flights to Buffalo from St. Louis during September instead. Flights to Buffalo in September, while not as cheap as those in February, still average around $344.

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

Best Price Found

$86

Fastest flight time

3h 20m

Direct flights

None
The best one-way flight to Buffalo from St. Louis in the past 72 hours is $86. The best round-trip flight deal from St. Louis to Buffalo found on momondo in the last 72 hours is $225.
The fastest flight from St. Louis to Buffalo takes 3h 20m
There are no direct flights from St. Louis to Buffalo. There are no popular flight routes from St. Louis to Buffalo.
Search flight deals

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 20m 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
FrontierPriceFrom $115Free CancellationRating
5.6
2,674 reviews
Search Frontier flights
DeltaPriceFrom $226Free CancellationRating
7.8
8,503 reviews
Search Delta flights
American AirlinesPriceFrom $236Free CancellationRating
7.1
11,946 reviews
Search American Airlines flights
SouthwestPriceFrom $298Free CancellationRating
8.0
4,218 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
Williamsville
Orchard Park
Grand Island
Bowmansville
Lockport
West Seneca
East Aurora
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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