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Cheap flights from Buffalo to Seattle from C$ 266

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.
Southwest Logo
7:45 p.m. - 12:35 a.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
7h 50m1 stop Chicago Midway
Southwest Logo
12:10 a.m. - 10:15 a.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
7h 05m1 stop Chicago Midway
C$ 531Southwest
Mon, 15 Feb - Thu, 18 Feb
Delta Logo
3:54 p.m. - 10:05 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
9h 11m1 stop New York John F Kennedy Intl
Delta Logo
1:45 p.m. - 11:12 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
6h 27m1 stop Detroit Metropolitan Wayne County
C$ 531Delta
Tue, 16 Feb - Mon, 22 Feb
United Airlines Logo
2:52 p.m. - 9:02 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
9h 10m1 stop Washington, D.C. Dulles Intl
United Airlines Logo
10:52 a.m. - 8:51 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
6h 59m1 stop Chicago O'Hare Intl
C$ 531United Airlines
Tue, 26 Jan - Tue, 2 Feb
United Airlines Logo
6:00 a.m. - 1:01 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
10h 01m1 stop Newark
United Airlines Logo
11:25 p.m. - 10:42 a.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
8h 17m1 stop Newark
C$ 531United Airlines
Fri, 4 Dec - Fri, 11 Dec
Delta Logo
3:54 p.m. - 10:05 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
9h 11m1 stop New York John F Kennedy Intl
Delta Logo
11:11 p.m. - 10:43 a.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
8h 32m1 stop New York John F Kennedy Intl
C$ 531Delta
Tue, 16 Feb - Thu, 18 Feb
Delta Logo
2:29 p.m. - 11:15 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
11h 46m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:45 a.m. - 11:59 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
9h 14m1 stop Atlanta Hartsfield-Jackson
C$ 531Delta
Tue, 12 Jan - Tue, 19 Jan
Southwest Logo
4:35 p.m. - 10:40 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
9h 05m1 stop Las Vegas Harry Reid Intl
Southwest Logo
5:40 a.m. - 8:15 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
11h 35m2 stops Phoenix Sky Harbor Intl Chicago Midway
C$ 538Southwest
Wed, 20 Jan - Wed, 27 Jan
Southwest Logo
3:55 p.m. - 11:35 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
10h 40m2 stops Baltimore/Washington Chicago Midway
Southwest Logo
5:15 a.m. - 4:15 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
8h 00m1 stop Phoenix Sky Harbor Intl
C$ 538Southwest
Fri, 4 Dec - Fri, 11 Dec
United Airlines Logo
2:52 p.m. - 9:02 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
9h 10m1 stop Washington, D.C. Dulles Intl
United Airlines Logo
5:00 a.m. - 4:51 p.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
8h 51m2 stops Denver Intl Chicago O'Hare Intl
C$ 538United Airlines
Tue, 26 Jan - Tue, 2 Feb
Southwest Logo
7:45 a.m. - 1:10 p.m.BUF  Buffalo-SEA Seattle/Tacoma Intl
8h 25m1 stop Chicago Midway
Southwest Logo
6:50 p.m. - 10:20 a.m.SEA  Seattle/Tacoma Intl-BUF Buffalo
12h 30m2 stops Phoenix Sky Harbor Intl Chicago Midway
C$ 538Southwest
Fri, 29 Jan - Fri, 5 Feb

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Delta flights from Buffalo to Seattle

Our best Delta deals on Buffalo to Seattle flight tickets
Delta
11 Jan
BUF3:53 p.m.Buffalo
9h 28m
1 stop
SEA10:21 p.m.Seattle/Tacoma Intl
21 Jan
SEA11:13 p.m.Seattle/Tacoma Intl
8h 26m
1 stop
BUF10:39 a.m.Buffalo
C$ 531
Delta
5 Dec
BUF3:59 p.m.Buffalo
9h 04m
1 stop
SEA10:03 p.m.Seattle/Tacoma Intl
12 Dec
SEA11:59 p.m.Seattle/Tacoma Intl
8h 06m
1 stop
BUF11:05 a.m.Buffalo
C$ 562
Delta
13 Feb
BUF6:05 a.m.Buffalo
7h 42m
1 stop
SEA10:47 a.m.Seattle/Tacoma Intl
20 Feb
SEA11:11 p.m.Seattle/Tacoma Intl
8h 32m
1 stop
BUF10:43 a.m.Buffalo
C$ 574

United Airlines flights from Buffalo to Seattle

Our best United Airlines deals on Buffalo to Seattle flight tickets
United Airlines
7 Dec
BUF5:40 p.m.Buffalo
8h 03m
1 stop
SEA10:43 p.m.Seattle/Tacoma Intl
14 Dec
SEA9:01 a.m.Seattle/Tacoma Intl
10h 56m
2 stops
BUF10:57 p.m.Buffalo
C$ 538
United Airlines
5 Dec
BUF10:00 a.m.Buffalo
11h 24m
2 stops
SEA6:24 p.m.Seattle/Tacoma Intl
12 Dec
SEA5:05 a.m.Seattle/Tacoma Intl
8h 52m
2 stops
BUF4:57 p.m.Buffalo
C$ 576
United Airlines
18 Feb
BUF6:30 a.m.Buffalo
8h 36m
1 stop
SEA12:06 p.m.Seattle/Tacoma Intl
22 Feb
SEA7:41 p.m.Seattle/Tacoma Intl
10h 53m
2 stops
BUF9:34 a.m.Buffalo
C$ 611

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
Quickest round-trip

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Mon 15/2

7:45 p.m.-12:35 a.m.

1 stop7h 50m

Seattle/Tacoma Intl

Thu 18/2

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

1 stop7h 05m

C$ 531

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Tue 16/2

3:54 p.m.-10:05 p.m.

1 stop9h 11m

Seattle/Tacoma Intl

Mon 22/2

1:45 p.m.-11:12 p.m.

1 stop6h 27m

C$ 531

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Tue 26/1

2:52 p.m.-9:02 p.m.

1 stop9h 10m

Seattle/Tacoma Intl

Tue 2/2

10:52 a.m.-8:51 p.m.

1 stop6h 59m

C$ 531

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Fri 4/12

6:00 a.m.-1:01 p.m.

1 stop10h 01m

Seattle/Tacoma Intl

Fri 11/12

11:25 p.m.-10:42 a.m.

1 stop8h 17m

C$ 531

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Tue 16/2

3:54 p.m.-10:05 p.m.

1 stop9h 11m

Seattle/Tacoma Intl

Thu 18/2

11:11 p.m.-10:43 a.m.

1 stop8h 32m

C$ 531

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Tue 12/1

2:29 p.m.-11:15 p.m.

1 stop11h 46m

Seattle/Tacoma Intl

Tue 19/1

11:45 a.m.-11:59 p.m.

1 stop9h 14m

C$ 531

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Wed 20/1

4:35 p.m.-10:40 p.m.

1 stop9h 05m

Seattle/Tacoma Intl

Wed 27/1

5:40 a.m.-8:15 p.m.

2 stops11h 35m

C$ 538

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Fri 4/12

3:55 p.m.-11:35 p.m.

2 stops10h 40m

Seattle/Tacoma Intl

Fri 11/12

5:15 a.m.-4:15 p.m.

1 stop8h 00m

C$ 538

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Tue 26/1

2:52 p.m.-9:02 p.m.

1 stop9h 10m

Seattle/Tacoma Intl

Tue 2/2

5:00 a.m.-4:51 p.m.

2 stops8h 51m

C$ 538

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Fri 29/1

7:45 a.m.-1:10 p.m.

1 stop8h 25m

Seattle/Tacoma Intl

Fri 5/2

6:50 p.m.-10:20 a.m.

2 stops12h 30m

C$ 538

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$ 593 to C$ 715.
The lowest price recently found on this route was C$ 531.

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$ 614.

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$ 716 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$ 493 on momondo.

How have Buffalo to Seattle flight prices changed over time?

As of November 2026, prices for Buffalo to Seattle flights are approximately 16% cheaper 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$ 266

Fastest flight time

9h 29m

Direct flights

None
The best one-way flight to Seattle from Buffalo in the past 72 hours is C$ 266. The best round-trip flight deal from Buffalo to Seattle found on momondo in the last 72 hours is C$ 531.
The fastest flight from Buffalo to Seattle takes 9h 29m
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 29m, 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$ 235Free CancellationRating
7.8
8,701 reviews
Search Delta flights
SouthwestPriceFrom C$ 618Free CancellationRating
8.0
4,215 reviews
Search Southwest flights

Travelling to a place near Seattle?

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

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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