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Cheap flights from Buffalo to Seattle from $137

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 9/30. 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
12:10 pm - 8:42 pm
BUF
-
SEA
11h 32m
1 stop
JetBlue Logo
9:40 pm - 8:24 am
SEA
-
BUF
7h 44m
1 stop
$273JetBlue
Tue, Sep 22 - Sat, Sep 26
JetBlue Logo
12:10 pm - 8:42 pm
BUF
-
SEA
11h 32m
1 stop
JetBlue Logo
9:40 pm - 8:24 am
SEA
-
BUF
7h 44m
1 stop
$304JetBlue
Sat, Sep 19 - Mon, Sep 21
JetBlue Logo
2:30 pm - 10:38 pm
BUF
-
SEA
11h 08m
1 stop
JetBlue Logo
9:40 pm - 8:24 am
SEA
-
BUF
7h 44m
1 stop
$309JetBlue
Sat, Sep 19 - Mon, Sep 21
JetBlue Logo
2:30 pm - 10:38 pm
BUF
-
SEA
11h 08m
1 stop
JetBlue Logo
9:40 pm - 8:24 am
SEA
-
BUF
7h 44m
1 stop
$322JetBlue
Sun, Sep 20 - Tue, Sep 29
JetBlue Logo
2:30 pm - 10:38 pm
BUF
-
SEA
11h 08m
1 stop
JetBlue Logo
9:40 pm - 8:24 am
SEA
-
BUF
7h 44m
1 stop
$323JetBlue
Fri, Sep 25 - Sat, Oct 3
JetBlue Logo
2:30 pm - 10:38 pm
BUF
-
SEA
11h 08m
1 stop
JetBlue Logo
11:55 pm - 11:14 am
SEA
-
BUF
8h 19m
1 stop
$328JetBlue
Sat, Sep 19 - Mon, Sep 21
JetBlue Logo
12:10 pm - 8:42 pm
BUF
-
SEA
11h 32m
1 stop
JetBlue Logo
9:40 pm - 8:24 am
SEA
-
BUF
7h 44m
1 stop
$335JetBlue
Thu, Sep 17 - Mon, Sep 21
JetBlue Logo
2:30 pm - 10:38 pm
BUF
-
SEA
11h 08m
1 stop
JetBlue Logo
9:40 pm - 8:24 am
SEA
-
BUF
7h 44m
1 stop
$354JetBlue
Fri, Sep 25 - Mon, Sep 28
JetBlue Logo
8:59 pm - 9:08 pm
BUF
-
SEA
27h 09m
1 stop
JetBlue Logo
11:44 pm - 11:14 am
SEA
-
BUF
8h 30m
1 stop
$365JetBlue
Tue, Sep 1 - Tue, Sep 8
Southwest Logo
6:25 pm - 11:35 pm
BUF
-
SEA
8h 10m
1 stop
Southwest Logo
5:20 am - 3:15 pm
SEA
-
BUF
6h 55m
1 stop
$367Southwest
Wed, Aug 19 - Tue, Aug 25

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JetBlue flights from Buffalo to Seattle

Our best JetBlue deals on Buffalo to Seattle flight tickets
JetBlue
Sep 22
BUF12:10 pmBuffalo
11h 32m
1 stop
SEA8:42 pmSeattle/Tacoma Intl
Sep 26
SEA9:40 pmSeattle/Tacoma Intl
7h 44m
1 stop
BUF8:24 amBuffalo
$273
JetBlue
Sep 19
BUF12:10 pmBuffalo
11h 32m
1 stop
SEA8:42 pmSeattle/Tacoma Intl
Sep 21
SEA9:40 pmSeattle/Tacoma Intl
7h 44m
1 stop
BUF8:24 amBuffalo
$304
JetBlue
Sep 19
BUF2:30 pmBuffalo
11h 08m
1 stop
SEA10:38 pmSeattle/Tacoma Intl
Sep 21
SEA9:40 pmSeattle/Tacoma Intl
7h 44m
1 stop
BUF8:24 amBuffalo
$309

American Airlines flights from Buffalo to Seattle

Our best American Airlines deals on Buffalo to Seattle flight tickets
American Airlines
Aug 22
BUF5:21 pmBuffalo
8h 35m
1 stop
SEA10:56 pmSeattle/Tacoma Intl
Aug 29
SEA5:10 amSeattle/Tacoma Intl
9h 52m
1 stop
BUF6:02 pmBuffalo
$368
American Airlines
Aug 26
BUF5:21 pmBuffalo
8h 35m
1 stop
SEA10:56 pmSeattle/Tacoma Intl
Sep 1
SEA9:58 pmSeattle/Tacoma Intl
9h 20m
1 stop
BUF10:18 amBuffalo
$369
American Airlines
Aug 4
BUF8:08 amBuffalo
9h 19m
1 stop
SEA2:27 pmSeattle/Tacoma Intl
Aug 19
SEA5:10 amSeattle/Tacoma Intl
9h 52m
1 stop
BUF6:02 pmBuffalo
$379

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 832,500 searches. Data last updated June 27, 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 9/22

12:10 pm-8:42 pm

1 stop11h 32m

Seattle/Tacoma Intl

Sat 9/26

9:40 pm-8:24 am

1 stop7h 44m

$273

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 9/19

12:10 pm-8:42 pm

1 stop11h 32m

Seattle/Tacoma Intl

Mon 9/21

9:40 pm-8:24 am

1 stop7h 44m

$304

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 9/19

2:30 pm-10:38 pm

1 stop11h 08m

Seattle/Tacoma Intl

Mon 9/21

9:40 pm-8:24 am

1 stop7h 44m

$309

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sun 9/20

2:30 pm-10:38 pm

1 stop11h 08m

Seattle/Tacoma Intl

Tue 9/29

9:40 pm-8:24 am

1 stop7h 44m

$322

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 9/25

2:30 pm-10:38 pm

1 stop11h 08m

Seattle/Tacoma Intl

Sat 10/3

9:40 pm-8:24 am

1 stop7h 44m

$323

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 9/19

2:30 pm-10:38 pm

1 stop11h 08m

Seattle/Tacoma Intl

Mon 9/21

11:55 pm-11:14 am

1 stop8h 19m

$328

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 9/17

12:10 pm-8:42 pm

1 stop11h 32m

Seattle/Tacoma Intl

Mon 9/21

9:40 pm-8:24 am

1 stop7h 44m

$335

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 9/25

2:30 pm-10:38 pm

1 stop11h 08m

Seattle/Tacoma Intl

Mon 9/28

9:40 pm-8:24 am

1 stop7h 44m

$354

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 9/1

8:59 pm-9:08 pm

1 stop27h 09m

Seattle/Tacoma Intl

Tue 9/8

11:44 pm-11:14 am

1 stop8h 30m

$365
Quickest round-trip

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 8/19

6:25 pm-11:35 pm

1 stop8h 10m

Seattle/Tacoma Intl

Tue 8/25

5:20 am-3:15 pm

1 stop6h 55m

$367

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?

In general, February is the cheapest month to fly from Buffalo to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $384. If you don’t want to visit Seattle in February, then you should wait until September to fly from Buffalo, when ticket prices are also cheap, with an average price of $398.

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 $478 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 $377 on momondo.

How have Buffalo to Seattle flight prices changed over time?

As of June 2026, prices for Buffalo to Seattle flights are approximately 60% 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

8h 10m

Direct flights

None
The fastest flight from Buffalo to Seattle takes 8h 10m
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?

    A flight from Buffalo to Seattle/Tacoma Intl will travel around 2109.4 mi. In terms of flight time, this usually takes a little over 8h 10m.

  • 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 are updated daily.

  • 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?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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 required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable 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
FrontierPriceFrom $82Free CancellationRating
5.6
2,861 reviews
Search Frontier flights
DeltaPriceFrom $238Free CancellationRating
7.8
8,451 reviews
Search Delta flights
United AirlinesPriceFrom $259Free CancellationRating
7.4
9,896 reviews
Search United Airlines flights
American AirlinesPriceFrom $341Free CancellationRating
7.1
11,779 reviews
Search American Airlines flights
SouthwestPriceFrom $346Free CancellationRating
7.9
4,246 reviews
Search Southwest flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Redmond
Kent
Lakewood
Puyallup
Tukwila
Federal Way
Fife
Cle Elum
Marysville
Centralia
Kirkland
Shoreline
Westport

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?

momondo does allow users to show only those flights to Seattle from Buffalo which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Buffalo to Seattle?

momondo provides multiple filters to help you find the best flight to Seattle from Buffalo. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Buffalo to Seattle right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Seattle from Buffalo. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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