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Cheap flights from Seattle to Buffalo from $151

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Buffalo departing on 4/21. 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

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Find the cheapest flights from Seattle to Buffalo

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
6:00 am - 3:20 pm
SEA
-
BUF
6h 20m
1 stop
Southwest Logo
6:55 pm - 12:10 am
BUF
-
SEA
8h 15m
1 stop
$391Southwest
Wed, May 6 - Wed, May 13
Southwest Logo
6:00 am - 6:15 pm
SEA
-
BUF
9h 15m
2 stops
Southwest Logo
6:55 pm - 12:10 am
BUF
-
SEA
8h 15m
1 stop
$396Southwest
Wed, May 6 - Wed, May 13
Southwest Logo
6:00 am - 6:15 pm
SEA
-
BUF
9h 15m
2 stops
Southwest Logo
4:00 pm - 12:10 am
BUF
-
SEA
11h 10m
2 stops
$401Southwest
Wed, May 6 - Wed, May 13
Southwest Logo
6:00 am - 3:20 pm
SEA
-
BUF
6h 20m
1 stop
Southwest Logo
6:55 pm - 12:10 am
BUF
-
SEA
8h 15m
1 stop
$406Southwest
Wed, Apr 15 - Wed, Apr 15
Southwest Logo
11:45 pm - 10:20 am
SEA
-
BUF
7h 35m
1 stop
Southwest Logo
6:55 pm - 12:10 am
BUF
-
SEA
8h 15m
1 stop
$407Southwest
Tue, Apr 14 - Tue, Apr 21
Southwest Logo
11:45 pm - 10:15 am
SEA
-
BUF
7h 30m
1 stop
Southwest Logo
4:00 pm - 12:05 am
BUF
-
SEA
11h 05m
2 stops
$411Southwest
Wed, Apr 22 - Mon, Apr 27
Southwest Logo
11:45 pm - 10:20 am
SEA
-
BUF
7h 35m
1 stop
Southwest Logo
3:10 pm - 11:35 pm
BUF
-
SEA
11h 25m
2 stops
$412Southwest
Tue, Apr 14 - Tue, Apr 21
Southwest Logo
11:55 pm - 10:15 am
SEA
-
BUF
7h 20m
1 stop
Southwest Logo
6:55 pm - 12:10 am
BUF
-
SEA
8h 15m
1 stop
$414Southwest
Thu, Apr 30 - Tue, May 12
Southwest Logo
7:10 pm - 7:50 am
SEA
-
BUF
9h 40m
2 stops
Southwest Logo
4:00 pm - 12:05 am
BUF
-
SEA
11h 05m
2 stops
$416Southwest
Wed, Apr 22 - Mon, Apr 27
Southwest Logo
7:10 pm - 7:50 am
SEA
-
BUF
9h 40m
2 stops
Southwest Logo
8:20 am - 4:55 pm
BUF
-
SEA
11h 35m
2 stops
$417Southwest
Tue, Apr 14 - Tue, Apr 21

Sun Country Air flights from Seattle to Buffalo

Our best Sun Country Air deals on Seattle to Buffalo flight tickets
Sun Country Air
Jul 30
SEA11:59 pmSeattle/Tacoma Intl
7h 37m
1 stop
BUF10:36 amBuffalo
Aug 3
BUF11:40 amBuffalo
8h 12m
1 stop
SEA4:52 pmSeattle/Tacoma Intl
$415
Sun Country Air
Jul 2
SEA6:15 pmSeattle/Tacoma Intl
13h 16m
1 stop
BUF10:31 amBuffalo
Jul 9
BUF11:17 amBuffalo
14h 29m
1 stop
SEA10:46 pmSeattle/Tacoma Intl
$425
Sun Country Air
Jul 30
SEA11:59 pmSeattle/Tacoma Intl
7h 37m
1 stop
BUF10:36 amBuffalo
Aug 6
BUF12:11 pmBuffalo
13h 35m
1 stop
SEA10:46 pmSeattle/Tacoma Intl
$437

American Airlines flights from Seattle to Buffalo

Our best American Airlines deals on Seattle to Buffalo flight tickets
American Airlines
Apr 16
SEA7:00 amSeattle/Tacoma Intl
7h 30m
1 stop
BUF5:30 pmBuffalo
Apr 20
BUF5:00 amBuffalo
9h 34m
1 stop
SEA11:34 amSeattle/Tacoma Intl
$421
American Airlines
Apr 16
SEA7:00 amSeattle/Tacoma Intl
7h 30m
1 stop
BUF5:30 pmBuffalo
Apr 20
BUF6:00 pmBuffalo
9h 36m
1 stop
SEA12:36 amSeattle/Tacoma Intl
$424
American Airlines
Apr 13
SEA10:47 pmSeattle/Tacoma Intl
8h 31m
1 stop
BUF10:18 amBuffalo
Apr 16
BUF6:00 pmBuffalo
7h 38m
1 stop
SEA10:38 pmSeattle/Tacoma Intl
$432

momondo Fare Finder

 
Customize your flight search to find flights from Seattle 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 March 20, 2026.
Use the filters below to find and compare flights from Seattle to Buffalo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Wed 5/6

6:00 am-3:20 pm

1 stop6h 20m

Buffalo

Wed 5/13

6:55 pm-12:10 am

1 stop8h 15m

$391

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Wed 5/6

6:00 am-6:15 pm

2 stops9h 15m

Buffalo

Wed 5/13

6:55 pm-12:10 am

1 stop8h 15m

$396

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Wed 5/6

6:00 am-6:15 pm

2 stops9h 15m

Buffalo

Wed 5/13

4:00 pm-12:10 am

2 stops11h 10m

$401

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Wed 4/15

6:00 am-3:20 pm

1 stop6h 20m

Buffalo

Wed 4/15

6:55 pm-12:10 am

1 stop8h 15m

$406

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Tue 4/14

11:45 pm-10:20 am

1 stop7h 35m

Buffalo

Tue 4/21

6:55 pm-12:10 am

1 stop8h 15m

$407

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Wed 4/22

11:45 pm-10:15 am

1 stop7h 30m

Buffalo

Mon 4/27

4:00 pm-12:05 am

2 stops11h 05m

$411

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Tue 4/14

11:45 pm-10:20 am

1 stop7h 35m

Buffalo

Tue 4/21

3:10 pm-11:35 pm

2 stops11h 25m

$412

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Thu 4/30

11:55 pm-10:15 am

1 stop7h 20m

Buffalo

Tue 5/12

6:55 pm-12:10 am

1 stop8h 15m

$414

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Wed 4/22

7:10 pm-7:50 am

2 stops9h 40m

Buffalo

Mon 4/27

4:00 pm-12:05 am

2 stops11h 05m

$416

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Tue 4/14

7:10 pm-7:50 am

2 stops9h 40m

Buffalo

Tue 4/21

8:20 am-4:55 pm

2 stops11h 35m

$417

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 Seattle 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 Seattle 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 Seattle during October instead. Flights to Buffalo in October, while not as cheap as those in September, still average around $378.

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

You are more likely to see cheaper flights to Buffalo from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Buffalo for around $475 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buffalo from Seattle for as low as $363 on momondo.

Can stopping save me money on Seattle to Buffalo flights?

You could potentially save up to 3% on your flight if you consider stops on a Seattle to Buffalo flight.

How have Seattle to Buffalo flight prices changed over time?

As of March 2026, prices for Seattle to Buffalo flights are approximately 31% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Buffalo

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

Cheap Seattle to Buffalo (SEA to BUF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Buffalo

Fastest flight time

6h 18m

Direct flights

None
The fastest flight from Seattle to Buffalo takes 6h 18m
There are no direct flights from Seattle to Buffalo. There are no popular flight routes from Seattle to Buffalo.
Search flight deals

  • How far is Seattle/Tacoma Intl to Buffalo by plane?

    Buffalo is 2109.4 mi away from Seattle/Tacoma Intl. Typically, this will take 6h 18m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Buffalo Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Buffalo Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Buffalo Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl 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 Seattle/Tacoma Intl Airport to Buffalo Airport.

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

    The necessary travel and health documents for your Buffalo Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to Buffalo?

Best airlines flying from Seattle to Buffalo

Compare and see reviews for airlines that fly from Seattle to Buffalo with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $131Free CancellationRating
7.2
2,909 reviews
Search JetBlue flights
FrontierPriceFrom $139Free CancellationRating
5.7
3,024 reviews
Search Frontier flights
DeltaPriceFrom $218Free CancellationRating
7.9
8,300 reviews
Search Delta flights
American AirlinesPriceFrom $286Free CancellationRating
7.1
11,477 reviews
Search American Airlines flights
United AirlinesPriceFrom $296Free CancellationRating
7.4
9,443 reviews
Search United Airlines flights
SouthwestPriceFrom $335Free CancellationRating
8.0
4,321 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $500Free CancellationRating
7.9
12,075 reviews
Search Alaska Airlines flights

Traveling to a place near Buffalo?

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

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Buffalo?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Buffalo. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seattle to Buffalo with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Buffalo from Seattle with this policy.

How can momondo help me find flights from Seattle to Buffalo?

momondo provides multiple filters to help you find the best flight to Buffalo from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Seattle to Buffalo flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Buffalo trip

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