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Cheap flights from Buffalo to Seattle from $140

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 2/19. 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
0 bags

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Cheap round-trip flights

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JetBlue Logo
3:55 pm - 10:21 pmBUF-SEA
9h 26m1 stop
JetBlue Logo
11:56 pm - 10:00 pmSEA-BUF
19h 04m1 stop
$303JetBlue
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Wed, Oct 22 - Fri, Oct 24
Delta Logo
12:49 pm - 6:23 pmBUF-SEA
8h 34m1 stop
Delta Logo
11:40 am - 11:39 pmSEA-BUF
8h 59m1 stop
$315Delta
Find Deal
Fri, Oct 31 - Mon, Nov 3
American Airlines Logo
6:07 am - 1:46 pmBUF-SEA
10h 39m2 stops
American Airlines Logo
12:42 pm - 11:26 pmSEA-BUF
7h 44m1 stop
$320American Airlines
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Fri, Oct 31 - Mon, Nov 3
Delta Logo
6:20 am - 10:33 amBUF-SEA
7h 13m1 stop
Delta Logo
6:00 am - 4:25 pmSEA-BUF
7h 25m1 stop
$323Delta
Find Deal
Fri, Oct 31 - Sat, Nov 8
American Airlines Logo
6:07 am - 1:46 pmBUF-SEA
10h 39m2 stops
American Airlines Logo
5:24 am - 4:26 pmSEA-BUF
8h 02m1 stop
$329American Airlines
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Fri, Oct 31 - Sat, Nov 8
Delta Logo
6:20 am - 10:33 amBUF-SEA
7h 13m1 stop
Delta Logo
11:40 am - 11:39 pmSEA-BUF
8h 59m1 stop
$351Delta
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Tue, Oct 28 - Wed, Nov 5
United Airlines Logo
12:15 pm - 8:54 pmBUF-SEA
11h 39m2 stops
United Airlines Logo
11:30 pm - 10:03 amSEA-BUF
7h 33m1 stop
$356United Airlines
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Tue, Oct 28 - Mon, Nov 3
Southwest Logo
7:50 am - 2:55 pmBUF-SEA
10h 05m1 stop
Southwest Logo
8:10 am - 10:40 pmSEA-BUF
11h 30m2 stops
$364Southwest
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Sat, Nov 1 - Tue, Nov 4
Southwest Logo
1:05 pm - 9:45 pmBUF-SEA
11h 40m2 stops
Southwest Logo
7:05 am - 8:40 pmSEA-BUF
10h 35m2 stops
$375Southwest
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Sat, Nov 1 - Tue, Nov 4
United Airlines Logo
10:50 am - 6:00 pmBUF-SEA
10h 10m2 stops
United Airlines Logo
8:36 am - 9:00 pmSEA-BUF
9h 24m2 stops
$377United Airlines
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Sat, Nov 1 - Sat, Nov 15

JetBlue flights from Buffalo to Seattle

Our best JetBlue deals on Buffalo to Seattle flight tickets
JetBlue
Oct 22
BUF3:55 pmBuffalo
9h 26m
1 stop
SEA10:21 pmSeattle/Tacoma Intl
Oct 24
SEA11:56 pmSeattle/Tacoma Intl
19h 04m
1 stop
BUF10:00 pmBuffalo
$303
Find similar
JetBlue
Oct 16
BUF6:00 amBuffalo
19h 46m
1 stop
SEA10:46 pmSeattle/Tacoma Intl
Oct 20
SEA11:56 pmSeattle/Tacoma Intl
13h 35m
1 stop
BUF4:31 pmBuffalo
$343
Find similar
JetBlue
Oct 15
BUF7:59 pmBuffalo
29h 47m
1 stop
SEA10:46 pmSeattle/Tacoma Intl
Oct 22
SEA11:56 pmSeattle/Tacoma Intl
12h 03m
1 stop
BUF2:59 pmBuffalo
$348
Find similar

Delta flights from Buffalo to Seattle

Our best Delta deals on Buffalo to Seattle flight tickets
Delta
Oct 31
BUF12:49 pmBuffalo
8h 34m
1 stop
SEA6:23 pmSeattle/Tacoma Intl
Nov 3
SEA11:40 amSeattle/Tacoma Intl
8h 59m
1 stop
BUF11:39 pmBuffalo
$315
Find similar
Delta
Oct 31
BUF6:20 amBuffalo
7h 13m
1 stop
SEA10:33 amSeattle/Tacoma Intl
Nov 8
SEA6:00 amSeattle/Tacoma Intl
7h 25m
1 stop
BUF4:25 pmBuffalo
$323
Find similar
Delta
Oct 28
BUF6:20 amBuffalo
7h 13m
1 stop
SEA10:33 amSeattle/Tacoma Intl
Nov 5
SEA11:40 amSeattle/Tacoma Intl
8h 59m
1 stop
BUF11:39 pmBuffalo
$351
Find similar

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 October 7, 2025.
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 10/22

3:55 pm-10:21 pm

1 stop9h 26m

Seattle/Tacoma Intl

Fri 10/24

11:56 pm-10:00 pm

1 stop19h 04m

$303

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 10/31

12:49 pm-6:23 pm

1 stop8h 34m

Seattle/Tacoma Intl

Mon 11/3

11:40 am-11:39 pm

1 stop8h 59m

$315

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 10/31

6:07 am-1:46 pm

2 stops10h 39m

Seattle/Tacoma Intl

Mon 11/3

12:42 pm-11:26 pm

1 stop7h 44m

$320

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 10/31

6:20 am-10:33 am

1 stop7h 13m

Seattle/Tacoma Intl

Sat 11/8

6:00 am-4:25 pm

1 stop7h 25m

$323

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Fri 10/31

6:07 am-1:46 pm

2 stops10h 39m

Seattle/Tacoma Intl

Sat 11/8

5:24 am-4:26 pm

1 stop8h 02m

$329

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 10/28

6:20 am-10:33 am

1 stop7h 13m

Seattle/Tacoma Intl

Wed 11/5

11:40 am-11:39 pm

1 stop8h 59m

$351

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 10/28

12:15 pm-8:54 pm

2 stops11h 39m

Seattle/Tacoma Intl

Mon 11/3

11:30 pm-10:03 am

1 stop7h 33m

$356

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 11/1

7:50 am-2:55 pm

1 stop10h 05m

Seattle/Tacoma Intl

Tue 11/4

8:10 am-10:40 pm

2 stops11h 30m

$364

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 11/1

1:05 pm-9:45 pm

2 stops11h 40m

Seattle/Tacoma Intl

Tue 11/4

7:05 am-8:40 pm

2 stops10h 35m

$375

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 11/1

10:50 am-6:00 pm

2 stops10h 10m

Seattle/Tacoma Intl

Sat 11/15

8:36 am-9:00 pm

2 stops9h 24m

$377

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?

In general, September 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 $376. If you don’t want to visit Seattle in September, then you should wait until October to fly from Buffalo, when ticket prices are also cheap, with an average price of $411.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Buffalo is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $473. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Buffalo because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $600.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Buffalo in the evening is the least expensive time of day to depart. momondo users have found prices as low as $400 when looking at flights departing in the evening. Flights to Seattle are more costly in the afternoon, with an average ticket price of $495. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Buffalo to Seattle/Tacoma Intl flight route?

Fly from Buffalo to Seattle/Tacoma Intl for the best Buffalo - Seattle/Tacoma Intl flight prices

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 $468 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 $385 on momondo.

What cabin class options are available on Buffalo to Seattle/Tacoma Intl flights?

There is only 1 cabin class available to choose from on Buffalo to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Buffalo to Seattle flight prices changed over time?

As of October 2025, prices for Buffalo to Seattle flights are approximately 1% 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

Direct flights

None
There are no direct flights from Buffalo to Seattle. There are no popular flight routes from Buffalo to Seattle.
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  • 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 13m.

  • 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 plane model from Buffalo to Seattle?

  • 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 $125Free CancellationRating
7.2
2,908 reviews
Search JetBlue flights
FrontierPriceFrom $155Free CancellationRating
5.8
3,145 reviews
Search Frontier flights
American AirlinesPriceFrom $328Free CancellationRating
7.2
11,041 reviews
Search American Airlines flights
DeltaPriceFrom $330Free CancellationRating
7.9
7,966 reviews
Search Delta flights
United AirlinesPriceFrom $344Free CancellationRating
7.4
8,956 reviews
Search United Airlines flights
SouthwestPriceFrom $345Free CancellationRating
8.0
4,232 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $558Free CancellationRating
8.0
11,031 reviews
Search Alaska Airlines 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
Kent
Marysville
Puyallup
Federal Way
Tukwila
Kirkland
Fife
Centralia
Lakewood
Shoreline
Cle Elum
Redmond
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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