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Cheap flights from Buffalo to Seattle from C$ 214

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 23/9. 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
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.
JetBlue Logo
12:19 p.m. - 8:44 p.m.
BUF
-
SEA
11h 25m
1 stop
JetBlue Logo
11:42 p.m. - 1:29 p.m.
SEA
-
BUF
10h 47m
1 stop
C$ 425JetBlue
Tue, 22 Sep - Tue, 22 Sep
JetBlue Logo
12:19 p.m. - 8:44 p.m.
BUF
-
SEA
11h 25m
1 stop
JetBlue Logo
11:42 p.m. - 1:29 p.m.
SEA
-
BUF
10h 47m
1 stop
C$ 425JetBlue
Wed, 23 Sep - Wed, 23 Sep
JetBlue Logo
12:19 p.m. - 8:44 p.m.
BUF
-
SEA
11h 25m
1 stop
JetBlue Logo
11:42 p.m. - 1:29 p.m.
SEA
-
BUF
10h 47m
1 stop
C$ 434JetBlue
Tue, 22 Sep - Wed, 23 Sep
JetBlue Logo
12:19 p.m. - 8:44 p.m.
BUF
-
SEA
11h 25m
1 stop
JetBlue Logo
11:42 p.m. - 1:29 p.m.
SEA
-
BUF
10h 47m
1 stop
C$ 434JetBlue
Wed, 23 Sep - Tue, 29 Sep
Delta Logo
7:00 a.m. - 2:33 p.m.
BUF
-
SEA
10h 33m
1 stop
Delta Logo
10:50 p.m. - 10:30 a.m.
SEA
-
BUF
8h 40m
1 stop
C$ 517Delta
Wed, 11 Nov - Wed, 18 Nov
Delta Logo
3:58 p.m. - 9:15 p.m.
BUF
-
SEA
8h 17m
1 stop
Delta Logo
10:40 p.m. - 10:26 a.m.
SEA
-
BUF
8h 46m
1 stop
C$ 517Delta
Wed, 23 Sep - Mon, 28 Sep
Delta Logo
12:17 p.m. - 6:59 p.m.
BUF
-
SEA
9h 42m
1 stop
Delta Logo
10:40 p.m. - 10:26 a.m.
SEA
-
BUF
8h 46m
1 stop
C$ 517Delta
Tue, 22 Sep - Mon, 28 Sep
Southwest Logo
5:15 p.m. - 9:30 p.m.
BUF
-
SEA
7h 15m
1 stop
Southwest Logo
11:00 p.m. - 12:15 p.m.
SEA
-
BUF
10h 15m
2 stops
C$ 524Southwest
Sat, 12 Sep - Sat, 19 Sep
Southwest Logo
7:35 p.m. - 12:35 a.m.
BUF
-
SEA
8h 00m
1 stop
Southwest Logo
9:15 p.m. - 10:25 a.m.
SEA
-
BUF
10h 10m
2 stops
C$ 524Southwest
Thu, 22 Oct - Mon, 26 Oct
Southwest Logo
3:50 p.m. - 11:00 p.m.
BUF
-
SEA
10h 10m
2 stops
Southwest Logo
11:05 p.m. - 11:20 a.m.
SEA
-
BUF
9h 15m
1 stop
C$ 524Southwest
Thu, 10 Sep - Mon, 14 Sep

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American Airlines flights from Buffalo to Seattle

Our best American Airlines deals on Buffalo to Seattle flight tickets
American Airlines
25 Aug
BUF5:11 a.m.Buffalo
10h 23m
1 stop
SEA12:34 p.m.Seattle/Tacoma Intl
1 Sep
SEA6:25 a.m.Seattle/Tacoma Intl
8h 32m
1 stop
BUF5:57 p.m.Buffalo
C$ 515
American Airlines
1 Sep
BUF5:11 a.m.Buffalo
10h 23m
1 stop
SEA12:34 p.m.Seattle/Tacoma Intl
12 Sep
SEA6:18 a.m.Seattle/Tacoma Intl
8h 00m
1 stop
BUF5:18 p.m.Buffalo
C$ 517
American Airlines
20 Aug
BUF4:50 p.m.Buffalo
11h 00m
1 stop
SEA12:50 a.m.Seattle/Tacoma Intl
31 Aug
SEA5:10 a.m.Seattle/Tacoma Intl
7h 49m
1 stop
BUF3:59 p.m.Buffalo
C$ 534

Southwest flights from Buffalo to Seattle

Our best Southwest deals on Buffalo to Seattle flight tickets
Southwest
12 Sep
BUF5:15 p.m.Buffalo
7h 15m
1 stop
SEA9:30 p.m.Seattle/Tacoma Intl
19 Sep
SEA11:00 p.m.Seattle/Tacoma Intl
10h 15m
2 stops
BUF12:15 p.m.Buffalo
C$ 531
Southwest
26 Aug
BUF12:00 p.m.Buffalo
11h 25m
2 stops
SEA8:25 p.m.Seattle/Tacoma Intl
31 Aug
SEA10:30 p.m.Seattle/Tacoma Intl
11h 00m
1 stop
BUF12:30 p.m.Buffalo
C$ 532
Southwest
9 Sep
BUF3:00 p.m.Buffalo
11h 10m
2 stops
SEA11:10 p.m.Seattle/Tacoma Intl
19 Sep
SEA11:00 p.m.Seattle/Tacoma Intl
10h 15m
2 stops
BUF12:15 p.m.Buffalo
C$ 538

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 30 July 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 22/9

12:19 p.m.-8:44 p.m.

1 stop11h 25m

Seattle/Tacoma Intl

Tue 22/9

11:42 p.m.-1:29 p.m.

1 stop10h 47m

C$ 425

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 23/9

12:19 p.m.-8:44 p.m.

1 stop11h 25m

Seattle/Tacoma Intl

Wed 23/9

11:42 p.m.-1:29 p.m.

1 stop10h 47m

C$ 425

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 22/9

12:19 p.m.-8:44 p.m.

1 stop11h 25m

Seattle/Tacoma Intl

Wed 23/9

11:42 p.m.-1:29 p.m.

1 stop10h 47m

C$ 434

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 23/9

12:19 p.m.-8:44 p.m.

1 stop11h 25m

Seattle/Tacoma Intl

Tue 29/9

11:42 p.m.-1:29 p.m.

1 stop10h 47m

C$ 434

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 11/11

7:00 a.m.-2:33 p.m.

1 stop10h 33m

Seattle/Tacoma Intl

Wed 18/11

10:50 p.m.-10:30 a.m.

1 stop8h 40m

C$ 517
Quickest round-trip

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 23/9

3:58 p.m.-9:15 p.m.

1 stop8h 17m

Seattle/Tacoma Intl

Mon 28/9

10:40 p.m.-10:26 a.m.

1 stop8h 46m

C$ 517

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 22/9

12:17 p.m.-6:59 p.m.

1 stop9h 42m

Seattle/Tacoma Intl

Mon 28/9

10:40 p.m.-10:26 a.m.

1 stop8h 46m

C$ 517

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 12/9

5:15 p.m.-9:30 p.m.

1 stop7h 15m

Seattle/Tacoma Intl

Sat 19/9

11:00 p.m.-12:15 p.m.

2 stops10h 15m

C$ 524

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 22/10

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

1 stop8h 00m

Seattle/Tacoma Intl

Mon 26/10

9:15 p.m.-10:25 a.m.

2 stops10h 10m

C$ 524

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 10/9

3:50 p.m.-11:00 p.m.

2 stops10h 10m

Seattle/Tacoma Intl

Mon 14/9

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

1 stop9h 15m

C$ 524

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$ 621 to C$ 966.
The lowest price recently found on this route was C$ 425.

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 September is also cheap. Prices for this month can be found on momondo for an average of C$ 580.

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$ 548 on momondo.

How have Buffalo to Seattle flight prices changed over time?

As of July 2026, prices for Buffalo to Seattle flights are approximately 9% 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

Fastest flight time

7h 45m

Direct flights

None
The fastest flight from Buffalo to Seattle takes 7h 45m
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 7h 45m, 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
8,489 reviews
Search Delta flights
SouthwestPriceFrom C$ 431Free CancellationRating
8.0
4,227 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
Kirkland
Tacoma
Marysville
Woodinville
Puyallup
Tukwila
Olympia
Ellensburg
Federal Way
Bainbridge Island
Gig Harbor
Kent
Edmonds
Shoreline
Shelton
Ocean Shores

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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