Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Buffalo from $117

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 11/13. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Buffalo

Cheap round-trip flights

Frontier Logo
5:40 pm - 8:52 amSTL-BUF
14h 12m1 stop
Frontier Logo
7:05 pm - 1:07 pmBUF-STL
19h 02m1 stop
$205Frontier
Find Deal
Sat, Aug 16 - Sat, Aug 23
Frontier Logo
5:11 pm - 8:50 amSTL-BUF
14h 39m1 stop
Frontier Logo
5:06 pm - 10:46 pmBUF-STL
6h 40m1 stop
$215Frontier
Find Deal
Sat, Dec 6 - Mon, Dec 8
Frontier Logo
7:54 pm - 4:00 pmSTL-BUF
19h 06m1 stop
Frontier Logo
4:55 pm - 9:11 amBUF-STL
17h 16m1 stop
$225Frontier
Find Deal
Thu, Aug 28 - Mon, Sep 1
Delta Logo
9:00 am - 5:33 pmSTL-BUF
7h 33m1 stop
Delta Logo
6:00 am - 10:40 amBUF-STL
5h 40m1 stop
$237Delta
Find Deal
Thu, Nov 13 - Sun, Nov 16
Southwest Logo
1:35 pm - 10:10 pmSTL-BUF
7h 35m2 stops
Southwest Logo
6:10 am - 8:40 amBUF-STL
3h 30m1 stop
$242Southwest
Find Deal
Wed, Sep 10 - Fri, Sep 12
Southwest Logo
7:10 am - 3:15 pmSTL-BUF
7h 05m2 stops
Southwest Logo
4:05 pm - 10:05 pmBUF-STL
7h 00m2 stops
$247Southwest
Find Deal
Wed, Aug 27 - Wed, Sep 3
American Airlines Logo
6:02 am - 11:26 amSTL-BUF
4h 24m1 stop
American Airlines Logo
5:29 am - 9:40 amBUF-STL
5h 11m1 stop
$259American Airlines
Find Deal
Thu, Aug 28 - Mon, Sep 1
American Airlines Logo
4:34 pm - 11:35 pmSTL-BUF
6h 01m1 stop
American Airlines Logo
6:33 pm - 11:07 pmBUF-STL
5h 34m1 stop
$288American Airlines
Find Deal
Sat, Nov 1 - Mon, Nov 3
United Airlines Logo
6:33 am - 2:12 pmSTL-BUF
6h 39m2 stops
United Airlines Logo
5:54 pm - 9:32 pmBUF-STL
4h 38m1 stop
$374United Airlines
Find Deal
Wed, Aug 13 - Wed, Aug 20
United Airlines Logo
9:00 am - 10:52 pmSTL-BUF
12h 52m1 stop
United Airlines Logo
6:00 am - 3:47 pmBUF-STL
10h 47m2 stops
$435United Airlines
Find Deal
Thu, Nov 13 - Tue, Nov 18

United Airlines flights from St. Louis to Buffalo

Our best United Airlines deals on St. Louis to Buffalo flight tickets
United Airlines
Aug 13
STL6:33 amLambert-St Louis
6h 39m
2 stops
BUF2:12 pmBuffalo
Aug 20
BUF5:54 pmBuffalo
4h 38m
1 stop
STL9:32 pmLambert-St Louis
$374
Find similar
United Airlines
Nov 13
STL9:00 amLambert-St Louis
12h 52m
1 stop
BUF10:52 pmBuffalo
Nov 18
BUF6:00 amBuffalo
10h 47m
2 stops
STL3:47 pmLambert-St Louis
$435
Find similar
United Airlines
Oct 10
STL6:30 amLambert-St Louis
26h 33m
1 stop
BUF10:03 amBuffalo
Oct 14
BUF7:07 amBuffalo
4h 42m
1 stop
STL10:49 amLambert-St Louis
$445
Find similar

Delta flights from St. Louis to Buffalo

Our best Delta deals on St. Louis to Buffalo flight tickets
Delta
Nov 13
STL9:00 amLambert-St Louis
7h 33m
1 stop
BUF5:33 pmBuffalo
Nov 16
BUF6:00 amBuffalo
5h 40m
1 stop
STL10:40 amLambert-St Louis
$237
Find similar
Delta
Aug 8
STL6:40 amLambert-St Louis
9h 36m
2 stops
BUF5:16 pmBuffalo
Aug 10
BUF6:04 amBuffalo
8h 17m
2 stops
STL1:21 pmLambert-St Louis
$1,316
Find similar
Delta
Aug 8
STL6:40 amLambert-St Louis
7h 32m
2 stops
BUF3:12 pmBuffalo
Aug 10
BUF6:04 amBuffalo
8h 17m
2 stops
STL1:21 pmLambert-St Louis
$1,354
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 July 31, 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

Sat 8/16

5:40 pm-8:52 am

1 stop14h 12m

Buffalo

Sat 8/23

7:05 pm-1:07 pm

1 stop19h 02m

$205

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Sat 12/6

5:11 pm-8:50 am

1 stop14h 39m

Buffalo

Mon 12/8

5:06 pm-10:46 pm

1 stop6h 40m

$215

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Thu 8/28

7:54 pm-4:00 pm

1 stop19h 06m

Buffalo

Mon 9/1

4:55 pm-9:11 am

1 stop17h 16m

$225

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Thu 11/13

9:00 am-5:33 pm

1 stop7h 33m

Buffalo

Sun 11/16

6:00 am-10:40 am

1 stop5h 40m

$237

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Wed 9/10

1:35 pm-10:10 pm

2 stops7h 35m

Buffalo

Fri 9/12

6:10 am-8:40 am

1 stop3h 30m

$242

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Wed 8/27

7:10 am-3:15 pm

2 stops7h 05m

Buffalo

Wed 9/3

4:05 pm-10:05 pm

2 stops7h 00m

$247

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Thu 8/28

6:02 am-11:26 am

1 stop4h 24m

Buffalo

Mon 9/1

5:29 am-9:40 am

1 stop5h 11m

$259

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Sat 11/1

4:34 pm-11:35 pm

1 stop6h 01m

Buffalo

Mon 11/3

6:33 pm-11:07 pm

1 stop5h 34m

$288

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Wed 8/13

6:33 am-2:12 pm

2 stops6h 39m

Buffalo

Wed 8/20

5:54 pm-9:32 pm

1 stop4h 38m

$374

St. LouisBuffalo

STL - BUF

STLBUF

Lambert-St Louis

Thu 11/13

9:00 am-10:52 pm

1 stop12h 52m

Buffalo

Tue 11/18

6:00 am-3:47 pm

2 stops10h 47m

$435

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

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 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 October instead. Flights to Buffalo in October, while not as cheap as those in September, still average around $323.

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 $404 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

Best Price Found

$117

Fastest flight time

4h 07m

Direct flights

None

Airports in Buffalo

1 airport
The best one-way flight to Buffalo from St. Louis in the past 72 hours is $117. The best round-trip flight deal from St. Louis to Buffalo found on momondo in the last 72 hours is $205.
The fastest flight from St. Louis to Buffalo takes 4h 07m
There are no direct flights from St. Louis to Buffalo. Popular non-direct route for this connection is Lambert-St Louis Airport - Buffalo Airport.
There is 1 airport near Buffalo: Buffalo (BUF)
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 4h 07m 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 $179Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
DeltaPriceFrom $243Free CancellationRating
8.0
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $250Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $306Free CancellationRating
8.0
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
Williamsville
Amherst
Tonawanda
Cheektowaga
Grand Island
Lockport
Orchard Park
West Seneca
East Aurora
Bowmansville
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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 8/5
Tue 8/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States