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Cheap flights from Buffalo to Seattle from C$ 236

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 9/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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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
12:35 p.m. - 5:55 p.m.
BUF
-
SEA
8h 20m
1 stop
Southwest Logo
11:05 p.m. - 11:20 a.m.
SEA
-
BUF
9h 15m
1 stop
C$ 418Southwest
Tue, 1 Sep - Tue, 8 Sep
Southwest Logo
6:00 a.m. - 1:00 p.m.
BUF
-
SEA
10h 00m
1 stop
Southwest Logo
11:05 p.m. - 12:30 p.m.
SEA
-
BUF
10h 25m
2 stops
C$ 425Southwest
Tue, 1 Sep - Tue, 8 Sep
Southwest Logo
9:45 a.m. - 6:10 p.m.
BUF
-
SEA
11h 25m
2 stops
Southwest Logo
11:05 p.m. - 12:30 p.m.
SEA
-
BUF
10h 25m
2 stops
C$ 433Southwest
Tue, 1 Sep - Tue, 8 Sep
Southwest Logo
9:40 a.m. - 3:00 p.m.
BUF
-
SEA
8h 20m
1 stop
Southwest Logo
11:05 p.m. - 10:45 a.m.
SEA
-
BUF
8h 40m
1 stop
C$ 505Southwest
Mon, 21 Sep - Thu, 24 Sep
Southwest Logo
5:40 a.m. - 1:55 p.m.
BUF
-
SEA
11h 15m
2 stops
Southwest Logo
11:05 p.m. - 10:45 a.m.
SEA
-
BUF
8h 40m
1 stop
C$ 514Southwest
Mon, 21 Sep - Thu, 24 Sep
Delta Logo
7:00 a.m. - 2:30 p.m.
BUF
-
SEA
10h 30m
1 stop
Delta Logo
10:20 p.m. - 9:40 a.m.
SEA
-
BUF
8h 20m
1 stop
C$ 534Delta
Wed, 3 Jun - Sat, 13 Jun
Southwest Logo
5:40 a.m. - 1:55 p.m.
BUF
-
SEA
11h 15m
2 stops
Southwest Logo
11:05 p.m. - 11:20 a.m.
SEA
-
BUF
9h 15m
1 stop
C$ 541Southwest
Mon, 17 Aug - Tue, 25 Aug
Southwest Logo
5:40 a.m. - 1:55 p.m.
BUF
-
SEA
11h 15m
2 stops
Southwest Logo
11:05 p.m. - 12:30 p.m.
SEA
-
BUF
10h 25m
2 stops
C$ 548Southwest
Mon, 17 Aug - Tue, 25 Aug
JetBlue Logo
5:32 p.m. - 12:27 a.m.
BUF
-
SEA
9h 55m
1 stop
JetBlue Logo
11:12 p.m. - 11:27 a.m.
SEA
-
BUF
9h 15m
1 stop
C$ 570JetBlue
Thu, 20 Aug - Tue, 25 Aug
Delta Logo
3:52 p.m. - 10:48 p.m.
BUF
-
SEA
9h 56m
1 stop
Delta Logo
12:30 p.m. - 11:59 p.m.
SEA
-
BUF
8h 29m
1 stop
C$ 575Delta
Wed, 20 May - Thu, 28 May

Delta flights from Buffalo to Seattle

Our best Delta deals on Buffalo to Seattle flight tickets
Delta
9 Jun
BUF3:49 p.m.Buffalo
10h 19m
1 stop
SEA11:08 p.m.Seattle/Tacoma Intl
16 Jun
SEA6:05 a.m.Seattle/Tacoma Intl
9h 22m
1 stop
BUF6:27 p.m.Buffalo
C$ 534
Delta
8 Jun
BUF7:45 p.m.Buffalo
7h 14m
1 stop
SEA11:59 p.m.Seattle/Tacoma Intl
17 Jun
SEA5:30 a.m.Seattle/Tacoma Intl
6h 51m
1 stop
BUF3:21 p.m.Buffalo
C$ 555
Delta
6 Jun
BUF7:00 a.m.Buffalo
16h 10m
1 stop
SEA8:10 p.m.Seattle/Tacoma Intl
17 Jun
SEA5:30 a.m.Seattle/Tacoma Intl
6h 51m
1 stop
BUF3:21 p.m.Buffalo
C$ 570

JetBlue flights from Buffalo to Seattle

Our best JetBlue deals on Buffalo to Seattle flight tickets
JetBlue
23 May
BUF2:47 p.m.Buffalo
9h 09m
1 stop
SEA8:56 p.m.Seattle/Tacoma Intl
2 Jun
SEA11:52 p.m.Seattle/Tacoma Intl
10h 50m
1 stop
BUF1:42 p.m.Buffalo
C$ 626
JetBlue
23 May
BUF2:47 p.m.Buffalo
9h 09m
1 stop
SEA8:56 p.m.Seattle/Tacoma Intl
30 May
SEA11:39 p.m.Seattle/Tacoma Intl
11h 18m
1 stop
BUF1:57 p.m.Buffalo
C$ 653
JetBlue
23 May
BUF2:47 p.m.Buffalo
9h 09m
1 stop
SEA8:56 p.m.Seattle/Tacoma Intl
31 May
SEA11:52 p.m.Seattle/Tacoma Intl
11h 00m
1 stop
BUF1:52 p.m.Buffalo
C$ 680

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 28 April 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

Tue 1/9

12:35 p.m.-5:55 p.m.

1 stop8h 20m

Seattle/Tacoma Intl

Tue 8/9

11:05 p.m.-11:20 a.m.

1 stop9h 15m

C$ 418

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 1/9

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

1 stop10h 00m

Seattle/Tacoma Intl

Tue 8/9

11:05 p.m.-12:30 p.m.

2 stops10h 25m

C$ 425

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 1/9

9:45 a.m.-6:10 p.m.

2 stops11h 25m

Seattle/Tacoma Intl

Tue 8/9

11:05 p.m.-12:30 p.m.

2 stops10h 25m

C$ 433
Quickest round-trip

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 21/9

9:40 a.m.-3:00 p.m.

1 stop8h 20m

Seattle/Tacoma Intl

Thu 24/9

11:05 p.m.-10:45 a.m.

1 stop8h 40m

C$ 505

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 21/9

5:40 a.m.-1:55 p.m.

2 stops11h 15m

Seattle/Tacoma Intl

Thu 24/9

11:05 p.m.-10:45 a.m.

1 stop8h 40m

C$ 514

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 3/6

7:00 a.m.-2:30 p.m.

1 stop10h 30m

Seattle/Tacoma Intl

Sat 13/6

10:20 p.m.-9:40 a.m.

1 stop8h 20m

C$ 534

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 17/8

5:40 a.m.-1:55 p.m.

2 stops11h 15m

Seattle/Tacoma Intl

Tue 25/8

11:05 p.m.-11:20 a.m.

1 stop9h 15m

C$ 541

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 17/8

5:40 a.m.-1:55 p.m.

2 stops11h 15m

Seattle/Tacoma Intl

Tue 25/8

11:05 p.m.-12:30 p.m.

2 stops10h 25m

C$ 548

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 20/8

5:32 p.m.-12:27 a.m.

1 stop9h 55m

Seattle/Tacoma Intl

Tue 25/8

11:12 p.m.-11:27 a.m.

1 stop9h 15m

C$ 570

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 20/5

3:52 p.m.-10:48 p.m.

1 stop9h 56m

Seattle/Tacoma Intl

Thu 28/5

12:30 p.m.-11:59 p.m.

1 stop8h 29m

C$ 575

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?

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$ 507.

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$ 613 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$ 458 on momondo.

How have Buffalo to Seattle flight prices changed over time?

As of April 2026, prices for Buffalo to Seattle flights are approximately 138% 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

9h 21m

Direct flights

None
The fastest flight from Buffalo to Seattle takes 9h 21m
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 21m, 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
8,466 reviews
Search Delta flights
SouthwestPriceFrom C$ 410Free CancellationRating
8.0
4,314 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
Redmond
Marysville
Kirkland
Woodinville
Tacoma
Puyallup
Tukwila
Olympia
Ocean Shores
Ellensburg
Bainbridge Island
Gig Harbor
Renton
Kent
Edmonds
Centralia
Federal Way

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.

An easier way to manage your Seattle trip

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