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Cheap flights from Buffalo to Seattle from $126

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 9/1. 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.
American Airlines Logo
7:59 am - 12:50 pmBUF  Buffalo-SEA Seattle/Tacoma Intl
7h 51m1 stop Chicago O'Hare Intl
American Airlines Logo
10:45 pm - 10:18 amSEA  Seattle/Tacoma Intl-BUF Buffalo
8h 33m1 stop Philadelphia
$310American Airlines
Sat, Sep 26 - Sat, Oct 3
Delta Logo
7:00 am - 3:21 pmBUF  Buffalo-SEA Seattle/Tacoma Intl
11h 21m1 stop New York John F Kennedy Intl
Delta Logo
10:59 pm - 10:38 amSEA  Seattle/Tacoma Intl-BUF Buffalo
8h 39m1 stop New York John F Kennedy Intl
$311Delta
Wed, Oct 28 - Mon, Nov 2
American Airlines Logo
2:51 pm - 10:57 pmBUF  Buffalo-SEA Seattle/Tacoma Intl
11h 06m1 stop Philadelphia
American Airlines Logo
6:15 am - 5:18 pmSEA  Seattle/Tacoma Intl-BUF Buffalo
8h 03m1 stop Chicago O'Hare Intl
$311American Airlines
Tue, Sep 22 - Mon, Sep 28
Delta Logo
3:59 pm - 11:00 pmBUF  Buffalo-SEA Seattle/Tacoma Intl
10h 01m1 stop New York John F Kennedy Intl
Delta Logo
11:45 am - 11:59 pmSEA  Seattle/Tacoma Intl-BUF Buffalo
9h 14m1 stop New York John F Kennedy Intl
$311Delta
Wed, Dec 2 - Sat, Dec 5
United Airlines Logo
6:30 am - 1:54 pmBUF  Buffalo-SEA Seattle/Tacoma Intl
10h 24m2 stops Chicago O'Hare Intl Denver Intl
United Airlines Logo
7:00 am - 5:02 pmSEA  Seattle/Tacoma Intl-BUF Buffalo
7h 02m1 stop Chicago O'Hare Intl
$316United Airlines
Wed, Oct 28 - Tue, Nov 3
Southwest Logo
2:00 pm - 10:40 pmBUF  Buffalo-SEA Seattle/Tacoma Intl
11h 40m2 stops Chicago Midway Denver Intl
Southwest Logo
5:15 am - 4:15 pmSEA  Seattle/Tacoma Intl-BUF Buffalo
8h 00m1 stop Phoenix Sky Harbor Intl
$316Southwest
Wed, Oct 28 - Mon, Nov 2
Southwest Logo
4:55 pm - 9:35 pmBUF  Buffalo-SEA Seattle/Tacoma Intl
7h 40m1 stop Chicago Midway
Southwest Logo
6:50 pm - 8:25 amSEA  Seattle/Tacoma Intl-BUF Buffalo
10h 35m2 stops Phoenix Sky Harbor Intl Baltimore/Washington
$317Southwest
Sat, Oct 24 - Mon, Oct 26
United Airlines Logo
5:58 pm - 10:43 pmBUF  Buffalo-SEA Seattle/Tacoma Intl
7h 45m1 stop Chicago O'Hare Intl
United Airlines Logo
11:00 pm - 9:28 amSEA  Seattle/Tacoma Intl-BUF Buffalo
7h 28m1 stop Chicago O'Hare Intl
$329United Airlines
Sat, Sep 5 - Wed, Sep 9
JetBlue Logo
3:10 pm - 10:38 pmBUF  Buffalo-SEA Seattle/Tacoma Intl
10h 28m1 stop Boston Logan Intl
JetBlue Logo
11:55 pm - 11:14 amSEA  Seattle/Tacoma Intl-BUF Buffalo
8h 19m1 stop Boston Logan Intl
$429JetBlue
Sat, Oct 17 - Wed, Oct 21
JetBlue Logo
2:23 pm - 10:37 pmBUF  Buffalo-SEA Seattle/Tacoma Intl
11h 14m1 stop Boston Logan Intl
JetBlue Logo
11:42 pm - 1:29 pmSEA  Seattle/Tacoma Intl-BUF Buffalo
10h 47m1 stop Boston Logan Intl
$429JetBlue
Fri, Sep 11 - Mon, Sep 14

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Delta flights from Buffalo to Seattle

Our best Delta deals on Buffalo to Seattle flight tickets
Delta
Sep 19
BUF3:53 pmBuffalo
10h 27m
1 stop
SEA11:20 pmSeattle/Tacoma Intl
Sep 21
SEA11:59 pmSeattle/Tacoma Intl
8h 11m
1 stop
BUF11:10 amBuffalo
$311
Delta
Sep 8
BUF7:25 pmBuffalo
7h 30m
1 stop
SEA11:55 pmSeattle/Tacoma Intl
Sep 15
SEA3:00 pmSeattle/Tacoma Intl
5h 53m
1 stop
BUF11:53 pmBuffalo
$329
Delta
Sep 11
BUF5:15 pmBuffalo
9h 43m
1 stop
SEA11:58 pmSeattle/Tacoma Intl
Sep 19
SEA11:50 amSeattle/Tacoma Intl
9h 22m
1 stop
BUF12:12 amBuffalo
$339

American Airlines flights from Buffalo to Seattle

Our best American Airlines deals on Buffalo to Seattle flight tickets
American Airlines
Sep 26
BUF7:59 amBuffalo
7h 51m
1 stop
SEA12:50 pmSeattle/Tacoma Intl
Oct 3
SEA10:45 pmSeattle/Tacoma Intl
8h 33m
1 stop
BUF10:18 amBuffalo
$310
American Airlines
Sep 9
BUF5:18 pmBuffalo
8h 39m
1 stop
SEA10:57 pmSeattle/Tacoma Intl
Sep 15
SEA11:57 pmSeattle/Tacoma Intl
8h 42m
1 stop
BUF11:39 amBuffalo
$312
American Airlines
Sep 24
BUF12:56 pmBuffalo
8h 41m
1 stop
SEA6:37 pmSeattle/Tacoma Intl
Oct 1
SEA6:15 amSeattle/Tacoma Intl
8h 03m
1 stop
BUF5:18 pmBuffalo
$313

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 August 14, 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 Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Sat 9/26

7:59 am-12:50 pm

1 stop7h 51m

Seattle/Tacoma Intl

Sat 10/3

10:45 pm-10:18 am

1 stop8h 33m

$310

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Wed 10/28

7:00 am-3:21 pm

1 stop11h 21m

Seattle/Tacoma Intl

Mon 11/2

10:59 pm-10:38 am

1 stop8h 39m

$311

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Tue 9/22

2:51 pm-10:57 pm

1 stop11h 06m

Seattle/Tacoma Intl

Mon 9/28

6:15 am-5:18 pm

1 stop8h 03m

$311

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Wed 12/2

3:59 pm-11:00 pm

1 stop10h 01m

Seattle/Tacoma Intl

Sat 12/5

11:45 am-11:59 pm

1 stop9h 14m

$311

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Wed 10/28

6:30 am-1:54 pm

2 stops10h 24m

Seattle/Tacoma Intl

Tue 11/3

7:00 am-5:02 pm

1 stop7h 02m

$316

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Wed 10/28

2:00 pm-10:40 pm

2 stops11h 40m

Seattle/Tacoma Intl

Mon 11/2

5:15 am-4:15 pm

1 stop8h 00m

$316

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Sat 10/24

4:55 pm-9:35 pm

1 stop7h 40m

Seattle/Tacoma Intl

Mon 10/26

6:50 pm-8:25 am

2 stops10h 35m

$317
Quickest round-trip

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Sat 9/5

5:58 pm-10:43 pm

1 stop7h 45m

Seattle/Tacoma Intl

Wed 9/9

11:00 pm-9:28 am

1 stop7h 28m

$329

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Sat 10/17

3:10 pm-10:38 pm

1 stop10h 28m

Seattle/Tacoma Intl

Wed 10/21

11:55 pm-11:14 am

1 stop8h 19m

$429

BuffaloSeattle

BUF Buffalo - SEA Seattle/Tacoma Intl

BUFSEA

Buffalo

Fri 9/11

2:23 pm-10:37 pm

1 stop11h 14m

Seattle/Tacoma Intl

Mon 9/14

11:42 pm-1:29 pm

1 stop10h 47m

$429

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 $439 to $676.
The lowest price recently found on this route was $310.

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 $430.

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 $490 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 $389 on momondo.

How have Buffalo to Seattle flight prices changed over time?

As of August 2026, prices for Buffalo to Seattle flights are approximately 49% 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 02m

Direct flights

None
The fastest flight from Buffalo to Seattle takes 7h 02m
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 7h 02m.

  • 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
JetBluePriceFrom $227Free CancellationRating
7.1
3,037 reviews
Search JetBlue flights
DeltaPriceFrom $238Free CancellationRating
7.8
8,502 reviews
Search Delta flights
United AirlinesPriceFrom $310Free CancellationRating
7.4
10,108 reviews
Search United Airlines flights
American AirlinesPriceFrom $359Free CancellationRating
7.1
11,927 reviews
Search American Airlines flights
SouthwestPriceFrom $366Free CancellationRating
8.0
4,220 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
Kent
Lynnwood
Redmond
Lakewood
Federal Way
Puyallup
Tukwila
Fife
Cle Elum
Marysville
Kirkland
Centralia
Shoreline
Lacey

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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