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Cheap flights from Buffalo to Seattle from C$ 217

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Buffalo to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
7:57 a.m. - 3:44 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
10h 47m1 stop Chicago O'Hare Intl
American Airlines Logo
6:14 a.m. - 6:05 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
8h 51m1 stop Chicago O'Hare Intl
C$ 430American Airlines
Wed, 4 Nov - Wed, 11 Nov
Southwest Logo
7:45 a.m. - 1:00 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
8h 15m1 stop Chicago Midway
Southwest Logo
12:15 a.m. - 10:20 a.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
7h 05m1 stop Chicago Midway
C$ 434Southwest
Wed, 17 Feb - Fri, 19 Feb
United Airlines Logo
5:45 p.m. - 10:56 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
8h 11m1 stop Chicago O'Hare Intl
United Airlines Logo
9:05 a.m. - 10:33 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
10h 28m2 stops San Francisco Denver Intl
C$ 440United Airlines
Sat, 24 Oct - Sat, 31 Oct
Southwest Logo
8:10 a.m. - 5:05 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
11h 55m2 stops Baltimore/Washington Denver Intl
Southwest Logo
12:15 a.m. - 10:20 a.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
7h 05m1 stop Chicago Midway
C$ 442Southwest
Wed, 17 Feb - Fri, 19 Feb
Southwest Logo
6:55 p.m. - 11:35 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
7h 40m1 stop Chicago Midway
Southwest Logo
5:40 a.m. - 8:50 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
12h 10m2 stops Phoenix Sky Harbor Intl Denver Intl
C$ 442Southwest
Wed, 4 Nov - Wed, 11 Nov
Delta Logo
6:15 a.m. - 11:00 a.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
7h 45m1 stop Detroit Metropolitan Wayne County
Delta Logo
10:59 p.m. - 10:38 a.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
8h 39m1 stop New York John F Kennedy Intl
C$ 463Delta
Thu, 29 Oct - Wed, 4 Nov
American Airlines Logo
5:40 a.m. - 11:46 a.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
9h 06m1 stop Philadelphia
American Airlines Logo
6:00 a.m. - 5:57 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
8h 57m1 stop Chicago O'Hare Intl
C$ 522American Airlines
Mon, 11 Jan - Thu, 14 Jan
United Airlines Logo
10:35 a.m. - 7:03 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
11h 28m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl
United Airlines Logo
7:00 a.m. - 4:59 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
6h 59m1 stop Chicago O'Hare Intl
C$ 554United Airlines
Wed, 18 Nov - Fri, 27 Nov
Delta Logo
3:20 p.m. - 11:00 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
10h 40m1 stop New York John F Kennedy Intl
Delta Logo
9:45 a.m. - 6:56 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
6h 11m1 stop Detroit Metropolitan Wayne County
C$ 664Delta
Fri, 20 Nov - Fri, 27 Nov
Delta Logo
12:00 p.m. - 6:37 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
9h 37m1 stop Detroit Metropolitan Wayne County
Delta Logo
9:45 a.m. - 6:56 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
6h 11m1 stop Detroit Metropolitan Wayne County
C$ 678Delta
Fri, 20 Nov - Fri, 27 Nov

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American Airlines flights from Buffalo to Seattle

Our best American Airlines deals on Buffalo to Seattle flight tickets
American Airlines
4 Nov
BUF7:57 a.m.Buffalo
10h 47m
1 stop
SEA3:44 p.m.Seattle/Tacoma Intl
11 Nov
SEA6:14 a.m.Seattle/Tacoma Intl
8h 51m
1 stop
BUF6:05 p.m.Buffalo
C$ 430
American Airlines
11 Jan
BUF5:40 a.m.Buffalo
9h 06m
1 stop
SEA11:46 a.m.Seattle/Tacoma Intl
14 Jan
SEA6:00 a.m.Seattle/Tacoma Intl
8h 57m
1 stop
BUF5:57 p.m.Buffalo
C$ 522
American Airlines
15 Oct
BUF8:00 a.m.Buffalo
10h 43m
1 stop
SEA3:43 p.m.Seattle/Tacoma Intl
11 Nov
SEA9:45 p.m.Seattle/Tacoma Intl
9h 55m
1 stop
BUF10:40 a.m.Buffalo
C$ 622

United Airlines flights from Buffalo to Seattle

Our best United Airlines deals on Buffalo to Seattle flight tickets
United Airlines
24 Oct
BUF5:45 p.m.Buffalo
8h 11m
1 stop
SEA10:56 p.m.Seattle/Tacoma Intl
31 Oct
SEA9:05 a.m.Seattle/Tacoma Intl
10h 28m
2 stops
BUF10:33 p.m.Buffalo
C$ 440
United Airlines
17 Nov
BUF2:55 p.m.Buffalo
11h 12m
2 stops
SEA11:07 p.m.Seattle/Tacoma Intl
27 Nov
SEA7:00 a.m.Seattle/Tacoma Intl
6h 59m
1 stop
BUF4:59 p.m.Buffalo
C$ 554
United Airlines
2 Feb
BUF6:00 a.m.Buffalo
10h 00m
1 stop
SEA1:00 p.m.Seattle/Tacoma Intl
3 Feb
SEA6:50 a.m.Seattle/Tacoma Intl
8h 15m
1 stop
BUF6:05 p.m.Buffalo
C$ 586

momondo Fare Finder

 
Use the filters below to find and compare flights from Buffalo to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Wed 4/11

7:57 a.m.-3:44 p.m.

1 stop10h 47m

Seattle/Tacoma Intl

Wed 11/11

6:14 a.m.-6:05 p.m.

1 stop8h 51m

C$ 430
Quickest round-trip

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Wed 17/2

7:45 a.m.-1:00 p.m.

1 stop8h 15m

Seattle/Tacoma Intl

Fri 19/2

12:15 a.m.-10:20 a.m.

1 stop7h 05m

C$ 434

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Sat 24/10

5:45 p.m.-10:56 p.m.

1 stop8h 11m

Seattle/Tacoma Intl

Sat 31/10

9:05 a.m.-10:33 p.m.

2 stops10h 28m

C$ 440

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Wed 17/2

8:10 a.m.-5:05 p.m.

2 stops11h 55m

Seattle/Tacoma Intl

Fri 19/2

12:15 a.m.-10:20 a.m.

1 stop7h 05m

C$ 442

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Wed 4/11

6:55 p.m.-11:35 p.m.

1 stop7h 40m

Seattle/Tacoma Intl

Wed 11/11

5:40 a.m.-8:50 p.m.

2 stops12h 10m

C$ 442

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Thu 29/10

6:15 a.m.-11:00 a.m.

1 stop7h 45m

Seattle/Tacoma Intl

Wed 4/11

10:59 p.m.-10:38 a.m.

1 stop8h 39m

C$ 463

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Mon 11/1

5:40 a.m.-11:46 a.m.

1 stop9h 06m

Seattle/Tacoma Intl

Thu 14/1

6:00 a.m.-5:57 p.m.

1 stop8h 57m

C$ 522

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Wed 18/11

10:35 a.m.-7:03 p.m.

2 stops11h 28m

Seattle/Tacoma Intl

Fri 27/11

7:00 a.m.-4:59 p.m.

1 stop6h 59m

C$ 554

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Fri 20/11

3:20 p.m.-11:00 p.m.

1 stop10h 40m

Seattle/Tacoma Intl

Fri 27/11

9:45 a.m.-6:56 p.m.

1 stop6h 11m

C$ 664

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Fri 20/11

12:00 p.m.-6:37 p.m.

1 stop9h 37m

Seattle/Tacoma Intl

Fri 27/11

9:45 a.m.-6:56 p.m.

1 stop6h 11m

C$ 678

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 Seattle from

How to get the cheapest flight ticket from Buffalo to Seattle

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 Buffalo and Seattle?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 552 to C$ 779.
The lowest price recently found on this route was C$ 430.

What is the cheapest month to fly to Seattle?

If you aren’t able to travel to Seattle during the month of February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of C$ 607.

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

You are more likely to see cheaper flights to Seattle from Buffalo when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around C$ 688 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Buffalo for as low as C$ 541 on momondo.

How have Buffalo to Seattle flight prices changed over time?

As of September 2026, prices for Buffalo to Seattle flights are approximately 6% more expensive when compared to flights at the same time last year.

When to book flights from Buffalo to Seattle

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

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

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

Best price found

C$ 217

Fastest flight time

9h 43m

Direct flights

None
The best one-way flight to Seattle from Buffalo in the past 72 hours is C$ 217. The best round-trip flight deal from Buffalo to Seattle found on momondo in the last 72 hours is C$ 430.
The fastest flight from Buffalo to Seattle takes 9h 43m
There are no direct flights from Buffalo to Seattle. There are no popular flight routes from Buffalo to Seattle.
Search flight deals

Frequently asked questions about flying from Buffalo to Seattle

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

    Seattle/Tacoma Intl is 3394.7 km away from Buffalo. Flights usually cover this in 9h 43m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Buffalo Airport to Seattle/Tacoma Intl Airport were last updated today.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Buffalo Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Buffalo to Seattle

Compare and see reviews for airlines that fly from Buffalo to Seattle with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom C$ 232Free CancellationRating
7.8
8,568 reviews
Search Delta flights
SouthwestPriceFrom C$ 432Free CancellationRating
8.0
4,189 reviews
Search Southwest flights

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Lynnwood
SeaTac
Kirkland
Redmond
Tacoma
Marysville
Tukwila
Olympia
Woodinville
Puyallup
Bainbridge Island
Ellensburg
Edmonds
Chehalis
Fife
Renton
Shoreline
Ocean Shores
Lakewood

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Buffalo to Seattle. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Buffalo to Seattle flights to just show those with flexible booking policies.

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

Once all potential Buffalo to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Buffalo and alert you when they change.

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