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Cheap flights from Seattle to Buffalo from $122

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 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.
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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.
United Airlines Logo
11:15 pm - 9:46 amSEA-BUF
7h 31m1 stop
United Airlines Logo
6:30 am - 12:03 pmBUF-SEA
8h 33m1 stop
$330United Airlines
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Wed, Dec 24 - Tue, Dec 30
Delta Logo
6:00 am - 5:07 pmSEA-BUF
8h 07m1 stop
Delta Logo
6:00 am - 12:29 pmBUF-SEA
9h 29m1 stop
$351Delta
Find Deal
Tue, Mar 3 - Wed, Mar 4
Delta Logo
6:00 am - 10:58 pmSEA-BUF
13h 58m2 stops
Delta Logo
3:50 pm - 10:16 pmBUF-SEA
9h 26m1 stop
$377Delta
Find Deal
Tue, Mar 3 - Wed, Mar 4
United Airlines Logo
7:12 pm - 9:46 amSEA-BUF
11h 34m2 stops
United Airlines Logo
6:30 am - 12:03 pmBUF-SEA
8h 33m1 stop
$378United Airlines
Find Deal
Wed, Dec 24 - Tue, Dec 30
American Airlines Logo
8:30 am - 10:20 pmSEA-BUF
10h 50m1 stop
American Airlines Logo
4:46 pm - 11:25 pmBUF-SEA
9h 39m1 stop
$432American Airlines
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Sat, Dec 6 - Mon, Dec 8
American Airlines Logo
10:38 am - 10:20 pmSEA-BUF
8h 42m1 stop
American Airlines Logo
4:46 pm - 11:25 pmBUF-SEA
9h 39m1 stop
$438American Airlines
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Sat, Dec 6 - Mon, Dec 8
Southwest Logo
6:35 am - 3:50 pmSEA-BUF
6h 15m1 stop
Southwest Logo
6:15 am - 1:25 pmBUF-SEA
10h 10m1 stop
$464Southwest
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Thu, Dec 25 - Wed, Dec 31
Southwest Logo
6:35 am - 3:50 pmSEA-BUF
6h 15m1 stop
Southwest Logo
6:00 am - 1:25 pmBUF-SEA
10h 25m2 stops
$469Southwest
Find Deal
Thu, Dec 25 - Wed, Dec 31
Alaska Airlines Logo
9:29 pm - 11:07 amSEA-BUF
10h 38m1 stop
Alaska Airlines Logo
5:25 am - 11:04 amBUF-SEA
8h 39m1 stop
$575Alaska Airlines
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Wed, Dec 24 - Wed, Dec 31
Alaska Airlines Logo
9:29 pm - 11:07 amSEA-BUF
10h 38m1 stop
Alaska Airlines Logo
12:50 pm - 7:20 amBUF-SEA
21h 30m2 stops
$580Alaska Airlines
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Wed, Dec 24 - Wed, Dec 31

United Airlines flights from Seattle to Buffalo

Our best United Airlines deals on Seattle to Buffalo flight tickets
United Airlines
Dec 24
SEA11:15 pmSeattle/Tacoma Intl
7h 31m
1 stop
BUF9:46 amBuffalo
Dec 30
BUF6:30 amBuffalo
8h 33m
1 stop
SEA12:03 pmSeattle/Tacoma Intl
$330
Find similar
United Airlines
Dec 24
SEA7:12 pmSeattle/Tacoma Intl
11h 34m
2 stops
BUF9:46 amBuffalo
Dec 30
BUF6:30 amBuffalo
8h 33m
1 stop
SEA12:03 pmSeattle/Tacoma Intl
$378
Find similar
United Airlines
Dec 21
SEA7:00 amSeattle/Tacoma Intl
6h 54m
1 stop
BUF4:54 pmBuffalo
Dec 25
BUF6:30 amBuffalo
8h 33m
1 stop
SEA12:03 pmSeattle/Tacoma Intl
$394
Find similar

Southwest flights from Seattle to Buffalo

Our best Southwest deals on Seattle to Buffalo flight tickets
Southwest
Dec 25
SEA6:35 amSeattle/Tacoma Intl
6h 15m
1 stop
BUF3:50 pmBuffalo
Dec 31
BUF6:15 amBuffalo
10h 10m
1 stop
SEA1:25 pmSeattle/Tacoma Intl
$464
Find similar
Southwest
Dec 25
SEA6:35 amSeattle/Tacoma Intl
6h 15m
1 stop
BUF3:50 pmBuffalo
Dec 31
BUF6:00 amBuffalo
10h 25m
2 stops
SEA1:25 pmSeattle/Tacoma Intl
$469
Find similar
Southwest
Dec 24
SEA7:05 amSeattle/Tacoma Intl
12h 35m
1 stop
BUF10:40 pmBuffalo
Dec 31
BUF6:15 amBuffalo
10h 10m
1 stop
SEA1:25 pmSeattle/Tacoma Intl
$493
Find similar

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 October 30, 2025.
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

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Wed 12/24

11:15 pm-9:46 am

1 stop7h 31m

Buffalo

Tue 12/30

6:30 am-12:03 pm

1 stop8h 33m

$330

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Tue 3/3

6:00 am-5:07 pm

1 stop8h 07m

Buffalo

Wed 3/4

6:00 am-12:29 pm

1 stop9h 29m

$351

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Tue 3/3

6:00 am-10:58 pm

2 stops13h 58m

Buffalo

Wed 3/4

3:50 pm-10:16 pm

1 stop9h 26m

$377

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Wed 12/24

7:12 pm-9:46 am

2 stops11h 34m

Buffalo

Tue 12/30

6:30 am-12:03 pm

1 stop8h 33m

$378

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Sat 12/6

8:30 am-10:20 pm

1 stop10h 50m

Buffalo

Mon 12/8

4:46 pm-11:25 pm

1 stop9h 39m

$432

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Sat 12/6

10:38 am-10:20 pm

1 stop8h 42m

Buffalo

Mon 12/8

4:46 pm-11:25 pm

1 stop9h 39m

$438

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Thu 12/25

6:35 am-3:50 pm

1 stop6h 15m

Buffalo

Wed 12/31

6:15 am-1:25 pm

1 stop10h 10m

$464

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Thu 12/25

6:35 am-3:50 pm

1 stop6h 15m

Buffalo

Wed 12/31

6:00 am-1:25 pm

2 stops10h 25m

$469

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Wed 12/24

9:29 pm-11:07 am

1 stop10h 38m

Buffalo

Wed 12/31

5:25 am-11:04 am

1 stop8h 39m

$575

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

Wed 12/24

9:29 pm-11:07 am

1 stop10h 38m

Buffalo

Wed 12/31

12:50 pm-7:20 am

2 stops21h 30m

$580

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 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 $431.

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 $465. Flights from Seattle to Buffalo on a Saturday will generally be more expensive and average around $611. 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 Seattle to Buffalo when you can find flight prices for as low as $467. Flying to Buffalo in the evening is an ideal time because this is during off-peak travel hours. In the afternoon is when there is more demand to fly to Buffalo, so prices are often more expensive at around $547 per ticket.

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 $485 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 $278 on momondo.

How have Seattle to Buffalo flight prices changed over time?

As of October 2025, prices for Seattle to Buffalo flights are approximately 29% 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

Direct flights

None
There are no direct flights from Seattle to Buffalo. There are no popular flight routes from Seattle to Buffalo.
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  • 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 15m 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 plane model from Seattle to Buffalo?

  • 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
FrontierPriceFrom $139Free CancellationRating
5.8
3,123 reviews
Search Frontier flights
JetBluePriceFrom $167Free CancellationRating
7.2
2,906 reviews
Search JetBlue flights
DeltaPriceFrom $286Free CancellationRating
7.9
7,995 reviews
Search Delta flights
United AirlinesPriceFrom $296Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
American AirlinesPriceFrom $306Free CancellationRating
7.2
11,033 reviews
Search American Airlines flights
SouthwestPriceFrom $336Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $551Free CancellationRating
8.0
11,214 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
Tonawanda
Grand Island
Williamsville
Orchard Park
Lockport
West Seneca
East Aurora
Bowmansville
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.

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