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Cheap flights from St. Louis to Buffalo from $93

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 8/31. 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
4:57 pm - 11:33 am
STL
-
BUF
17h 36m
1 stop
Frontier Logo
11:29 am - 5:37 pm
BUF
-
STL
7h 08m
1 stop
$162Frontier
Fri, Jul 31 - Tue, Aug 4
Frontier Logo
4:57 pm - 10:29 am
STL
-
BUF
16h 32m
1 stop
Frontier Logo
11:29 am - 5:37 pm
BUF
-
STL
7h 08m
1 stop
$187Frontier
Sat, Jul 18 - Tue, Jul 21
Frontier Logo
6:34 pm - 1:53 pm
STL
-
BUF
18h 19m
1 stop
Frontier Logo
11:29 am - 5:37 pm
BUF
-
STL
7h 08m
1 stop
$190Frontier
Sun, Jul 26 - Thu, Aug 6
Frontier Logo
4:57 pm - 10:29 am
STL
-
BUF
16h 32m
1 stop
Frontier Logo
2:48 pm - 5:37 pm
BUF
-
STL
27h 49m
1 stop
$191Frontier
Wed, Jul 29 - Wed, Aug 5
Frontier Logo
6:17 pm - 10:29 am
STL
-
BUF
15h 12m
1 stop
Frontier Logo
11:36 am - 5:22 pm
BUF
-
STL
6h 46m
1 stop
$192Frontier
Mon, Aug 31 - Fri, Sep 4
Frontier Logo
6:17 pm - 10:29 am
STL
-
BUF
15h 12m
1 stop
Frontier Logo
11:36 am - 5:22 pm
BUF
-
STL
6h 46m
1 stop
$208Frontier
Fri, Aug 28 - Sun, Aug 30
Frontier Logo
4:57 pm - 11:33 am
STL
-
BUF
17h 36m
1 stop
Frontier Logo
11:29 am - 5:37 pm
BUF
-
STL
7h 08m
1 stop
$231Frontier
Fri, Aug 14 - Sun, Aug 16
Frontier Logo
6:17 pm - 10:29 am
STL
-
BUF
15h 12m
1 stop
Frontier Logo
6:54 pm - 5:22 pm
BUF
-
STL
23h 28m
2 stops
$232Frontier
Fri, Aug 28 - Wed, Sep 2
Frontier Logo
4:57 pm - 10:29 am
STL
-
BUF
16h 32m
1 stop
Frontier Logo
12:28 pm - 11:59 pm
BUF
-
STL
12h 31m
2 stops
$246Frontier
Wed, Jul 29 - Sat, Aug 1
Frontier Logo
6:34 pm - 1:53 pm
STL
-
BUF
18h 19m
1 stop
Frontier Logo
12:28 pm - 11:59 pm
BUF
-
STL
12h 31m
2 stops
$247Frontier
Tue, Jul 28 - Sat, Aug 1

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Frontier flights from St. Louis to Buffalo

Our best Frontier deals on St. Louis to Buffalo flight tickets
Frontier
Jul 18
STL4:57 pmLambert-St Louis
16h 32m
1 stop
BUF10:29 amBuffalo
Jul 21
BUF11:29 amBuffalo
7h 08m
1 stop
STL5:37 pmLambert-St Louis
$187
Frontier
Jul 26
STL6:34 pmLambert-St Louis
18h 19m
1 stop
BUF1:53 pmBuffalo
Aug 6
BUF11:29 amBuffalo
7h 08m
1 stop
STL5:37 pmLambert-St Louis
$190
Frontier
Jul 29
STL4:57 pmLambert-St Louis
16h 32m
1 stop
BUF10:29 amBuffalo
Aug 5
BUF2:48 pmBuffalo
27h 49m
1 stop
STL5:37 pmLambert-St Louis
$191

Southwest flights from St. Louis to Buffalo

Our best Southwest deals on St. Louis to Buffalo flight tickets
Southwest
Jul 29
STL5:40 amLambert-St Louis
7h 40m
2 stops
BUF2:20 pmBuffalo
Aug 5
BUF6:00 amBuffalo
7h 10m
2 stops
STL12:10 pmLambert-St Louis
$341
Southwest
Aug 3
STL11:00 amLambert-St Louis
7h 15m
1 stop
BUF7:15 pmBuffalo
Aug 4
BUF6:25 pmBuffalo
4h 15m
1 stop
STL9:40 pmLambert-St Louis
$342
Southwest
Aug 20
STL12:30 pmLambert-St Louis
9h 10m
2 stops
BUF10:40 pmBuffalo
Aug 24
BUF9:40 amBuffalo
6h 30m
2 stops
STL3:10 pmLambert-St Louis
$352

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 July 1, 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

Fri 7/31

4:57 pm-11:33 am

1 stop17h 36m

Buffalo

Tue 8/4

11:29 am-5:37 pm

1 stop7h 08m

$162

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Sat 7/18

4:57 pm-10:29 am

1 stop16h 32m

Buffalo

Tue 7/21

11:29 am-5:37 pm

1 stop7h 08m

$187

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Sun 7/26

6:34 pm-1:53 pm

1 stop18h 19m

Buffalo

Thu 8/6

11:29 am-5:37 pm

1 stop7h 08m

$190

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Wed 7/29

4:57 pm-10:29 am

1 stop16h 32m

Buffalo

Wed 8/5

2:48 pm-5:37 pm

1 stop27h 49m

$191
Quickest round-trip

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Mon 8/31

6:17 pm-10:29 am

1 stop15h 12m

Buffalo

Fri 9/4

11:36 am-5:22 pm

1 stop6h 46m

$192

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Fri 8/28

6:17 pm-10:29 am

1 stop15h 12m

Buffalo

Sun 8/30

11:36 am-5:22 pm

1 stop6h 46m

$208

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Fri 8/14

4:57 pm-11:33 am

1 stop17h 36m

Buffalo

Sun 8/16

11:29 am-5:37 pm

1 stop7h 08m

$231

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Fri 8/28

6:17 pm-10:29 am

1 stop15h 12m

Buffalo

Wed 9/2

6:54 pm-5:22 pm

2 stops23h 28m

$232

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Wed 7/29

4:57 pm-10:29 am

1 stop16h 32m

Buffalo

Sat 8/1

12:28 pm-11:59 pm

2 stops12h 31m

$246

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Tue 7/28

6:34 pm-1:53 pm

1 stop18h 19m

Buffalo

Sat 8/1

12:28 pm-11:59 pm

2 stops12h 31m

$247

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 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.

How far in advance should I book a flight from St. Louis 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 $387 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 $236 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 42m

Direct flights

None
The fastest flight from St. Louis to Buffalo takes 3h 42m
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 42m 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
2,849 reviews
Search Frontier flights
American AirlinesPriceFrom $221Free CancellationRating
7.1
11,766 reviews
Search American Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.8
8,452 reviews
Search Delta flights
SouthwestPriceFrom $308Free CancellationRating
7.9
4,246 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
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.

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