Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Buffalo to Seattle from $180

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 1/7. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Buffalo to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:44 pm - 10:05 pm
BUF
-
SEA
7h 21m1 stop
Delta Logo
6:00 am - 10:57 pm
SEA
-
BUF
13h 57m1 stop
$334Delta
Wed, Feb 18 - Sat, Mar 7
Delta Logo
3:38 pm - 10:22 pm
BUF
-
SEA
9h 44m1 stop
Delta Logo
11:59 pm - 5:07 pm
SEA
-
BUF
14h 08m2 stops
$339Delta
Wed, Feb 18 - Mon, Mar 9
American Airlines Logo
4:01 pm - 10:07 pm
BUF
-
SEA
9h 06m1 stop
American Airlines Logo
7:35 am - 9:06 pm
SEA
-
BUF
10h 31m1 stop
$343American Airlines
Mon, Jan 12 - Sat, Jan 17
American Airlines Logo
5:16 pm - 10:20 pm
BUF
-
SEA
8h 04m1 stop
American Airlines Logo
7:00 am - 9:16 pm
SEA
-
BUF
11h 16m2 stops
$348American Airlines
Mon, Jan 12 - Sat, Jan 17
Delta Logo
3:38 pm - 10:22 pm
BUF
-
SEA
9h 44m1 stop
Delta Logo
6:05 am - 5:31 pm
SEA
-
BUF
8h 26m1 stop
$359Delta
Tue, Feb 17 - Tue, Mar 3
Delta Logo
3:38 pm - 10:22 pm
BUF
-
SEA
9h 44m1 stop
Delta Logo
11:12 pm - 11:44 am
SEA
-
BUF
9h 32m1 stop
$363Delta
Tue, Feb 17 - Mon, Mar 9
Southwest Logo
5:50 am - 10:50 am
BUF
-
SEA
8h 00m1 stop
Southwest Logo
6:05 am - 10:00 pm
SEA
-
BUF
12h 55m2 stops
$364Southwest
Tue, Feb 17 - Tue, Mar 3
American Airlines Logo
12:58 pm - 7:04 pm
BUF
-
SEA
9h 06m1 stop
American Airlines Logo
7:00 am - 5:49 pm
SEA
-
BUF
7h 49m1 stop
$366American Airlines
Sat, Jan 24 - Sat, Jan 31
Delta Logo
10:27 am - 10:05 pm
BUF
-
SEA
14h 38m1 stop
Delta Logo
11:12 pm - 10:55 pm
SEA
-
BUF
20h 43m1 stop
$367Delta
Thu, Feb 19 - Mon, Mar 9
Delta Logo
3:38 pm - 10:22 pm
BUF
-
SEA
9h 44m1 stop
Delta Logo
11:59 pm - 5:07 pm
SEA
-
BUF
14h 08m2 stops
$368Delta
Tue, Feb 17 - Mon, Mar 9

Delta flights from Buffalo to Seattle

Our best Delta deals on Buffalo to Seattle flight tickets
Delta
Feb 18
BUF5:44 pmBuffalo
7h 21m
1 stop
SEA10:05 pmSeattle/Tacoma Intl
Mar 7
SEA6:00 amSeattle/Tacoma Intl
13h 57m
1 stop
BUF10:57 pmBuffalo
$334
Find similar
Delta
Feb 18
BUF3:38 pmBuffalo
9h 44m
1 stop
SEA10:22 pmSeattle/Tacoma Intl
Mar 9
SEA11:59 pmSeattle/Tacoma Intl
14h 08m
2 stops
BUF5:07 pmBuffalo
$339
Find similar
Delta
Feb 17
BUF3:38 pmBuffalo
9h 44m
1 stop
SEA10:22 pmSeattle/Tacoma Intl
Mar 3
SEA6:05 amSeattle/Tacoma Intl
8h 26m
1 stop
BUF5:31 pmBuffalo
$359
Find similar

American Airlines flights from Buffalo to Seattle

Our best American Airlines deals on Buffalo to Seattle flight tickets
American Airlines
Jan 12
BUF4:01 pmBuffalo
9h 06m
1 stop
SEA10:07 pmSeattle/Tacoma Intl
Jan 17
SEA7:35 amSeattle/Tacoma Intl
10h 31m
1 stop
BUF9:06 pmBuffalo
$343
Find similar
American Airlines
Jan 12
BUF5:16 pmBuffalo
8h 04m
1 stop
SEA10:20 pmSeattle/Tacoma Intl
Jan 17
SEA7:00 amSeattle/Tacoma Intl
11h 16m
2 stops
BUF9:16 pmBuffalo
$348
Find similar
American Airlines
Jan 24
BUF12:58 pmBuffalo
9h 06m
1 stop
SEA7:04 pmSeattle/Tacoma Intl
Jan 31
SEA7:00 amSeattle/Tacoma Intl
7h 49m
1 stop
BUF5:49 pmBuffalo
$366
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 December 11, 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 2/18

5:44 pm-10:05 pm

1 stop7h 21m

Seattle/Tacoma Intl

Sat 3/7

6:00 am-10:57 pm

1 stop13h 57m

$334

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Wed 2/18

3:38 pm-10:22 pm

1 stop9h 44m

Seattle/Tacoma Intl

Mon 3/9

11:59 pm-5:07 pm

2 stops14h 08m

$339

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 1/12

4:01 pm-10:07 pm

1 stop9h 06m

Seattle/Tacoma Intl

Sat 1/17

7:35 am-9:06 pm

1 stop10h 31m

$343

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Mon 1/12

5:16 pm-10:20 pm

1 stop8h 04m

Seattle/Tacoma Intl

Sat 1/17

7:00 am-9:16 pm

2 stops11h 16m

$348

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 2/17

3:38 pm-10:22 pm

1 stop9h 44m

Seattle/Tacoma Intl

Tue 3/3

6:05 am-5:31 pm

1 stop8h 26m

$359

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 2/17

3:38 pm-10:22 pm

1 stop9h 44m

Seattle/Tacoma Intl

Mon 3/9

11:12 pm-11:44 am

1 stop9h 32m

$363

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 2/17

5:50 am-10:50 am

1 stop8h 00m

Seattle/Tacoma Intl

Tue 3/3

6:05 am-10:00 pm

2 stops12h 55m

$364

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Sat 1/24

12:58 pm-7:04 pm

1 stop9h 06m

Seattle/Tacoma Intl

Sat 1/31

7:00 am-5:49 pm

1 stop7h 49m

$366

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Thu 2/19

10:27 am-10:05 pm

1 stop14h 38m

Seattle/Tacoma Intl

Mon 3/9

11:12 pm-10:55 pm

1 stop20h 43m

$367

BuffaloSeattle

BUF - SEA

BUFSEA

Buffalo

Tue 2/17

3:38 pm-10:22 pm

1 stop9h 44m

Seattle/Tacoma Intl

Mon 3/9

11:59 pm-5:07 pm

2 stops14h 08m

$368

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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, October 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 $334. If you don’t want to visit Seattle in October, then you should wait until September to fly from Buffalo, when ticket prices are also cheap, with an average price of $376.

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 $455 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 December 2025, prices for Buffalo to Seattle flights are approximately 197% 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 48m

Direct flights

None
The fastest flight from Buffalo to Seattle takes 7h 48m
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?

    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 48m.

  • 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
2,898 reviews
Search JetBlue flights
FrontierPriceFrom $155Free CancellationRating
5.8
3,084 reviews
Search Frontier flights
DeltaPriceFrom $318Free CancellationRating
7.9
8,005 reviews
Search Delta flights
American AirlinesPriceFrom $327Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
SouthwestPriceFrom $335Free CancellationRating
7.9
4,252 reviews
Search Southwest flights
United AirlinesPriceFrom $344Free CancellationRating
7.4
9,095 reviews
Search United 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
Puyallup
Marysville
Redmond
Tukwila
Cle Elum
Federal Way
Lakewood
Fife
Westport
Kirkland
Centralia
Shoreline

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.

An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 1/10
Sat 1/17
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States