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Cheap flights from Buffalo to Seattle from C$ 208

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Buffalo to Seattle departing on 15/6. 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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Find the cheapest flights from Buffalo to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
7:00 p.m. - 11:55 p.m.
BUF
-
SEA
7h 55m
1 stop
Southwest Logo
11:55 p.m. - 10:10 a.m.
SEA
-
BUF
7h 15m
1 stop
C$ 425Southwest
Wed, 25 Mar - Tue, 31 Mar
United Airlines Logo
10:35 a.m. - 7:00 p.m.
BUF
-
SEA
11h 25m
2 stops
United Airlines Logo
11:59 p.m. - 9:41 a.m.
SEA
-
BUF
6h 42m
1 stop
C$ 432United Airlines
Tue, 14 Apr - Wed, 29 Apr
Southwest Logo
4:00 p.m. - 12:10 a.m.
BUF
-
SEA
11h 10m
2 stops
Southwest Logo
6:00 a.m. - 6:15 p.m.
SEA
-
BUF
9h 15m
2 stops
C$ 438Southwest
Tue, 14 Apr - Wed, 29 Apr
Southwest Logo
8:00 p.m. - 12:05 a.m.
BUF
-
SEA
7h 05m
1 stop
Southwest Logo
11:45 p.m. - 10:15 a.m.
SEA
-
BUF
7h 30m
1 stop
C$ 441Southwest
Thu, 9 Apr - Wed, 15 Apr
Southwest Logo
8:00 p.m. - 12:05 a.m.
BUF
-
SEA
7h 05m
1 stop
Southwest Logo
7:10 p.m. - 7:50 a.m.
SEA
-
BUF
9h 40m
2 stops
C$ 448Southwest
Thu, 9 Apr - Wed, 15 Apr
Southwest Logo
4:00 p.m. - 12:05 a.m.
BUF
-
SEA
11h 05m
2 stops
Southwest Logo
7:10 p.m. - 7:50 a.m.
SEA
-
BUF
9h 40m
2 stops
C$ 455Southwest
Thu, 9 Apr - Wed, 15 Apr
Southwest Logo
6:55 p.m. - 12:10 a.m.
BUF
-
SEA
8h 15m
1 stop
Southwest Logo
11:45 p.m. - 10:15 a.m.
SEA
-
BUF
7h 30m
1 stop
C$ 458Southwest
Wed, 15 Apr - Wed, 22 Apr
Southwest Logo
6:55 p.m. - 12:10 a.m.
BUF
-
SEA
8h 15m
1 stop
Southwest Logo
7:10 p.m. - 7:50 a.m.
SEA
-
BUF
9h 40m
2 stops
C$ 464Southwest
Wed, 15 Apr - Wed, 22 Apr
Southwest Logo
3:10 p.m. - 11:35 p.m.
BUF
-
SEA
11h 25m
2 stops
Southwest Logo
7:10 p.m. - 7:50 a.m.
SEA
-
BUF
9h 40m
2 stops
C$ 471Southwest
Wed, 15 Apr - Wed, 22 Apr
United Airlines Logo
6:00 p.m. - 10:42 p.m.
BUF
-
SEA
7h 42m
1 stop
United Airlines Logo
11:59 p.m. - 10:12 a.m.
SEA
-
BUF
7h 13m
1 stop
C$ 484United Airlines
Wed, 1 Apr - Wed, 8 Apr

Southwest flights from Buffalo to Seattle

Our best Southwest deals on Buffalo to Seattle flight tickets
Southwest
25 Mar
BUF7:00 p.m.Buffalo
7h 55m
1 stop
SEA11:55 p.m.Seattle/Tacoma Intl
31 Mar
SEA11:55 p.m.Seattle/Tacoma Intl
7h 15m
1 stop
BUF10:10 a.m.Buffalo
C$ 425
Southwest
14 Apr
BUF4:00 p.m.Buffalo
11h 10m
2 stops
SEA12:10 a.m.Seattle/Tacoma Intl
29 Apr
SEA6:00 a.m.Seattle/Tacoma Intl
9h 15m
2 stops
BUF6:15 p.m.Buffalo
C$ 438
Southwest
9 Apr
BUF8:00 p.m.Buffalo
7h 05m
1 stop
SEA12:05 a.m.Seattle/Tacoma Intl
15 Apr
SEA11:45 p.m.Seattle/Tacoma Intl
7h 30m
1 stop
BUF10:15 a.m.Buffalo
C$ 441

United Airlines flights from Buffalo to Seattle

Our best United Airlines deals on Buffalo to Seattle flight tickets
United Airlines
14 Apr
BUF10:35 a.m.Buffalo
11h 25m
2 stops
SEA7:00 p.m.Seattle/Tacoma Intl
29 Apr
SEA11:59 p.m.Seattle/Tacoma Intl
6h 42m
1 stop
BUF9:41 a.m.Buffalo
C$ 432
United Airlines
1 Apr
BUF6:00 p.m.Buffalo
7h 42m
1 stop
SEA10:42 p.m.Seattle/Tacoma Intl
8 Apr
SEA11:59 p.m.Seattle/Tacoma Intl
7h 13m
1 stop
BUF10:12 a.m.Buffalo
C$ 484
United Airlines
24 Mar
BUF10:23 a.m.Buffalo
15h 22m
2 stops
SEA10:45 p.m.Seattle/Tacoma Intl
31 Mar
SEA12:54 p.m.Seattle/Tacoma Intl
7h 16m
1 stop
BUF11:10 p.m.Buffalo
C$ 568

momondo Fare Finder

 
Customize your flight search to find flights from Buffalo to Seattle 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 96,600 searches. Data last updated 6 March 2026.
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 - SEA

BUFSEA

Buffalo

Wed 25/3

7:00 p.m.-11:55 p.m.

1 stop7h 55m

Seattle/Tacoma Intl

Tue 31/3

11:55 p.m.-10:10 a.m.

1 stop7h 15m

C$ 425

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 14/4

10:35 a.m.-7:00 p.m.

2 stops11h 25m

Seattle/Tacoma Intl

Wed 29/4

11:59 p.m.-9:41 a.m.

1 stop6h 42m

C$ 432

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 14/4

4:00 p.m.-12:10 a.m.

2 stops11h 10m

Seattle/Tacoma Intl

Wed 29/4

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

2 stops9h 15m

C$ 438
Quickest round-trip

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 9/4

8:00 p.m.-12:05 a.m.

1 stop7h 05m

Seattle/Tacoma Intl

Wed 15/4

11:45 p.m.-10:15 a.m.

1 stop7h 30m

C$ 441

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 9/4

8:00 p.m.-12:05 a.m.

1 stop7h 05m

Seattle/Tacoma Intl

Wed 15/4

7:10 p.m.-7:50 a.m.

2 stops9h 40m

C$ 448

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 9/4

4:00 p.m.-12:05 a.m.

2 stops11h 05m

Seattle/Tacoma Intl

Wed 15/4

7:10 p.m.-7:50 a.m.

2 stops9h 40m

C$ 455

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 15/4

6:55 p.m.-12:10 a.m.

1 stop8h 15m

Seattle/Tacoma Intl

Wed 22/4

11:45 p.m.-10:15 a.m.

1 stop7h 30m

C$ 458

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 15/4

6:55 p.m.-12:10 a.m.

1 stop8h 15m

Seattle/Tacoma Intl

Wed 22/4

7:10 p.m.-7:50 a.m.

2 stops9h 40m

C$ 464

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 15/4

3:10 p.m.-11:35 p.m.

2 stops11h 25m

Seattle/Tacoma Intl

Wed 22/4

7:10 p.m.-7:50 a.m.

2 stops9h 40m

C$ 471

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 1/4

6:00 p.m.-10:42 p.m.

1 stop7h 42m

Seattle/Tacoma Intl

Wed 8/4

11:59 p.m.-10:12 a.m.

1 stop7h 13m

C$ 484

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 cheapest month to fly to Seattle?

If you aren’t able to travel to Seattle during the month of October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of C$ 514.

How far in advance should I book a flight 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$ 611 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$ 481 on momondo.

How have Buffalo to Seattle flight prices changed over time?

As of March 2026, prices for Buffalo to Seattle flights are approximately 18% 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

Fastest flight time

7h 30m

Direct flights

None
The fastest flight from Buffalo to Seattle takes 7h 30m
There are no direct flights from Buffalo to Seattle. There are no popular flight routes from Buffalo to Seattle.
Search flight deals

  • 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 7h 30m, 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$ 228Free CancellationRating
7.9
8,258 reviews
Search Delta flights
SouthwestPriceFrom C$ 418Free CancellationRating
8.0
4,309 reviews
Search Southwest flights

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Lynnwood
Leavenworth
SeaTac
Tacoma
Marysville
Redmond
Kirkland
Puyallup
Tukwila
Olympia
Ocean Shores
Ellensburg
Bainbridge Island
Gig Harbor
Renton
Centralia
Kent
Edmonds
Federal Way
Shelton

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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