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Cheap flights from Buffalo to Seattle from C$ 204

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 27/2. 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.
JetBlue Logo
12:25 p.m. - 8:53 p.m.
BUF
-
SEA
11h 28m
1 stop
JetBlue Logo
11:30 a.m. - 10:57 p.m.
SEA
-
BUF
8h 27m
1 stop
C$ 410JetBlue
Wed, 13 May - Sun, 17 May
Sun Country Air Logo
11:41 a.m. - 10:40 p.m.
BUF
-
SEA
13h 59m
1 stop
Sun Country Air Logo
10:26 a.m. - 11:51 a.m.
SEA
-
BUF
22h 25m
1 stop
C$ 437Sun Country Air
Thu, 28 May - Sat, 30 May
JetBlue Logo
12:25 p.m. - 8:53 p.m.
BUF
-
SEA
11h 28m
1 stop
JetBlue Logo
11:30 a.m. - 10:57 p.m.
SEA
-
BUF
8h 27m
1 stop
C$ 458JetBlue
Sun, 24 May - Tue, 2 Jun
JetBlue Logo
12:25 p.m. - 8:53 p.m.
BUF
-
SEA
11h 28m
1 stop
JetBlue Logo
11:30 a.m. - 10:57 p.m.
SEA
-
BUF
8h 27m
1 stop
C$ 461JetBlue
Sat, 16 May - Tue, 26 May
JetBlue Logo
12:25 p.m. - 8:53 p.m.
BUF
-
SEA
11h 28m
1 stop
JetBlue Logo
11:59 p.m. - 11:29 a.m.
SEA
-
BUF
8h 30m
1 stop
C$ 462JetBlue
Sun, 24 May - Thu, 4 Jun
JetBlue Logo
12:25 p.m. - 8:53 p.m.
BUF
-
SEA
11h 28m
1 stop
JetBlue Logo
11:59 p.m. - 11:29 a.m.
SEA
-
BUF
8h 30m
1 stop
C$ 465JetBlue
Sat, 23 May - Thu, 4 Jun
JetBlue Logo
12:25 p.m. - 8:53 p.m.
BUF
-
SEA
11h 28m
1 stop
JetBlue Logo
11:59 p.m. - 11:29 a.m.
SEA
-
BUF
8h 30m
1 stop
C$ 468JetBlue
Sat, 23 May - Sun, 24 May
Delta Logo
5:44 p.m. - 9:49 p.m.
BUF
-
SEA
7h 05m
1 stop
Delta Logo
9:59 p.m. - 11:11 a.m.
SEA
-
BUF
10h 12m
1 stop
C$ 498Delta
Tue, 3 Feb - Wed, 4 Feb
Sun Country Air Logo
11:41 a.m. - 10:46 p.m.
BUF
-
SEA
14h 05m
1 stop
Sun Country Air Logo
6:24 p.m. - 11:08 a.m.
SEA
-
BUF
13h 44m
1 stop
C$ 500Sun Country Air
Sun, 7 Jun - Wed, 17 Jun
United Airlines Logo
7:00 a.m. - 2:35 p.m.
BUF
-
SEA
10h 35m
2 stops
United Airlines Logo
10:52 a.m. - 8:31 p.m.
SEA
-
BUF
6h 39m
1 stop
C$ 505United Airlines
Tue, 5 May - Tue, 12 May

JetBlue flights from Buffalo to Seattle

Our best JetBlue deals on Buffalo to Seattle flight tickets
JetBlue
13 May
BUF12:25 p.m.Buffalo
11h 28m
1 stop
SEA8:53 p.m.Seattle/Tacoma Intl
17 May
SEA11:30 a.m.Seattle/Tacoma Intl
8h 27m
1 stop
BUF10:57 p.m.Buffalo
C$ 410
JetBlue
13 May
BUF12:25 p.m.Buffalo
11h 28m
1 stop
SEA8:53 p.m.Seattle/Tacoma Intl
17 May
SEA11:30 a.m.Seattle/Tacoma Intl
8h 27m
1 stop
BUF10:57 p.m.Buffalo
C$ 458
JetBlue
16 May
BUF12:25 p.m.Buffalo
11h 28m
1 stop
SEA8:53 p.m.Seattle/Tacoma Intl
26 May
SEA11:30 a.m.Seattle/Tacoma Intl
8h 27m
1 stop
BUF10:57 p.m.Buffalo
C$ 461

Southwest flights from Buffalo to Seattle

Our best Southwest deals on Buffalo to Seattle flight tickets
Southwest
5 May
BUF3:10 p.m.Buffalo
10h 20m
2 stops
SEA10:30 p.m.Seattle/Tacoma Intl
12 May
SEA7:10 p.m.Seattle/Tacoma Intl
9h 40m
2 stops
BUF7:50 a.m.Buffalo
C$ 514
Southwest
5 Feb
BUF5:50 a.m.Buffalo
8h 00m
1 stop
SEA10:50 a.m.Seattle/Tacoma Intl
7 Feb
SEA11:40 a.m.Seattle/Tacoma Intl
8h 15m
1 stop
BUF10:55 p.m.Buffalo
C$ 534
Southwest
5 Feb
BUF3:35 p.m.Buffalo
11h 05m
1 stop
SEA11:40 p.m.Seattle/Tacoma Intl
7 Feb
SEA9:25 a.m.Seattle/Tacoma Intl
10h 30m
2 stops
BUF10:55 p.m.Buffalo
C$ 541

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 15 January 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

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 13/5

12:25 p.m.-8:53 p.m.

1 stop11h 28m

Seattle/Tacoma Intl

Sun 17/5

11:30 a.m.-10:57 p.m.

1 stop8h 27m

C$ 410

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 28/5

11:41 a.m.-10:40 p.m.

1 stop13h 59m

Seattle/Tacoma Intl

Sat 30/5

10:26 a.m.-11:51 a.m.

1 stop22h 25m

C$ 437

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sun 24/5

12:25 p.m.-8:53 p.m.

1 stop11h 28m

Seattle/Tacoma Intl

Tue 2/6

11:30 a.m.-10:57 p.m.

1 stop8h 27m

C$ 458

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 16/5

12:25 p.m.-8:53 p.m.

1 stop11h 28m

Seattle/Tacoma Intl

Tue 26/5

11:30 a.m.-10:57 p.m.

1 stop8h 27m

C$ 461

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sun 24/5

12:25 p.m.-8:53 p.m.

1 stop11h 28m

Seattle/Tacoma Intl

Thu 4/6

11:59 p.m.-11:29 a.m.

1 stop8h 30m

C$ 462

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 23/5

12:25 p.m.-8:53 p.m.

1 stop11h 28m

Seattle/Tacoma Intl

Thu 4/6

11:59 p.m.-11:29 a.m.

1 stop8h 30m

C$ 465

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 23/5

12:25 p.m.-8:53 p.m.

1 stop11h 28m

Seattle/Tacoma Intl

Sun 24/5

11:59 p.m.-11:29 a.m.

1 stop8h 30m

C$ 468

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 3/2

5:44 p.m.-9:49 p.m.

1 stop7h 05m

Seattle/Tacoma Intl

Wed 4/2

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

1 stop10h 12m

C$ 498

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sun 7/6

11:41 a.m.-10:46 p.m.

1 stop14h 05m

Seattle/Tacoma Intl

Wed 17/6

6:24 p.m.-11:08 a.m.

1 stop13h 44m

C$ 500

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 5/5

7:00 a.m.-2:35 p.m.

2 stops10h 35m

Seattle/Tacoma Intl

Tue 12/5

10:52 a.m.-8:31 p.m.

1 stop6h 39m

C$ 505

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$ 522.

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$ 625 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$ 530 on momondo.

How have Buffalo to Seattle flight prices changed over time?

As of January 2026, prices for Buffalo to Seattle flights are approximately 16% 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 28m

Direct flights

None
The fastest flight from Buffalo to Seattle takes 9h 28m
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 9h 28m, 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$ 267Free CancellationRating
7.9
8,048 reviews
Search Delta flights
SouthwestPriceFrom C$ 425Free CancellationRating
8.0
4,258 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
Tacoma
Marysville
SeaTac
Redmond
Kirkland
Tukwila
Olympia
Ocean Shores
Bainbridge Island
Ellensburg
Gig Harbor
Renton
Mukilteo
Cle Elum
Centralia
Puyallup
Kent
Edmonds

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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