Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Buffalo to Seattle from $127

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 7/14. 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.

Find the cheapest flights from Buffalo to Seattle

Cheap round-trip flights

Frontier Logo
4:57 pm - 12:30 amBUF-SEA
10h 33m1 stop
Frontier Logo
6:12 am - 4:02 pmSEA-BUF
6h 50m1 stop
$160Frontier
Find Deal
Fri, Sep 12 - Fri, Sep 19
Frontier Logo
2:11 pm - 6:59 pmBUF-SEA
7h 48m1 stop
Frontier Logo
6:25 am - 4:17 pmSEA-BUF
6h 52m1 stop
$259Frontier
Find Deal
Mon, Jul 21 - Wed, Jul 23
Frontier Logo
4:57 pm - 12:30 amBUF-SEA
10h 33m1 stop
Frontier Logo
7:00 am - 4:02 pmSEA-BUF
30h 02m1 stop
$262Frontier
Find Deal
Fri, Sep 19 - Sat, Sep 27
Frontier Logo
4:57 pm - 12:30 amBUF-SEA
10h 33m1 stop
Frontier Logo
7:00 am - 4:02 pmSEA-BUF
30h 02m1 stop
$266Frontier
Find Deal
Fri, Sep 19 - Sat, Sep 27
American Airlines Logo
6:14 am - 8:46 pmBUF-SEA
17h 32m1 stop
American Airlines Logo
12:34 am - 4:50 pmSEA-BUF
13h 16m1 stop
$315American Airlines
Find Deal
Wed, Oct 15 - Tue, Oct 21
American Airlines Logo
5:05 am - 2:23 pmBUF-SEA
12h 18m1 stop
American Airlines Logo
12:46 am - 11:04 amSEA-BUF
7h 18m1 stop
$329American Airlines
Find Deal
Tue, Aug 5 - Wed, Aug 13
Southwest Logo
6:45 pm - 11:35 pmBUF-SEA
7h 50m1 stop
Southwest Logo
6:45 am - 6:15 pmSEA-BUF
8h 30m1 stop
$343Southwest
Find Deal
Tue, Aug 5 - Tue, Aug 12
Southwest Logo
4:30 pm - 11:10 pmBUF-SEA
9h 40m1 stop
Southwest Logo
9:10 pm - 7:55 amSEA-BUF
7h 45m1 stop
$345Southwest
Find Deal
Wed, Aug 20 - Sat, Aug 30
United Airlines Logo
5:54 pm - 10:20 pmBUF-SEA
7h 26m1 stop
United Airlines Logo
10:55 pm - 9:46 amSEA-BUF
7h 51m1 stop
$360United Airlines
Find Deal
Wed, Aug 20 - Fri, Aug 29
Delta Logo
12:09 pm - 7:00 pmBUF-SEA
9h 51m1 stop
Delta Logo
11:05 pm - 9:41 amSEA-BUF
7h 36m1 stop
$366Delta
Find Deal
Fri, Oct 24 - Mon, Oct 27

Sun Country Air flights from Buffalo to Seattle

Our best Sun Country Air deals on Buffalo to Seattle flight tickets
Sun Country Air
Aug 21
BUF11:45 amBuffalo
13h 58m
1 stop
SEA10:43 pmSeattle/Tacoma Intl
Aug 31
SEA11:55 pmSeattle/Tacoma Intl
7h 52m
1 stop
BUF10:47 amBuffalo
Sun Country Air
Aug 21
BUF11:45 amBuffalo
13h 58m
1 stop
SEA10:43 pmSeattle/Tacoma Intl
Aug 28
SEA6:34 pmSeattle/Tacoma Intl
12h 31m
1 stop
BUF10:05 amBuffalo
Sun Country Air
Aug 24
BUF12:09 pmBuffalo
13h 34m
1 stop
SEA10:43 pmSeattle/Tacoma Intl
Aug 31
SEA11:55 pmSeattle/Tacoma Intl
7h 52m
1 stop
BUF10:47 amBuffalo

American Airlines flights from Buffalo to Seattle

Our best American Airlines deals on Buffalo to Seattle flight tickets
American Airlines
Oct 15
BUF6:14 amBuffalo
17h 32m
1 stop
SEA8:46 pmSeattle/Tacoma Intl
Oct 21
SEA12:34 amSeattle/Tacoma Intl
13h 16m
1 stop
BUF4:50 pmBuffalo
American Airlines
Aug 5
BUF5:05 amBuffalo
12h 18m
1 stop
SEA2:23 pmSeattle/Tacoma Intl
Aug 13
SEA12:46 amSeattle/Tacoma Intl
7h 18m
1 stop
BUF11:04 amBuffalo
American Airlines
Aug 30
BUF4:58 pmBuffalo
9h 43m
1 stop
SEA11:41 pmSeattle/Tacoma Intl
Sep 10
SEA6:05 amSeattle/Tacoma Intl
12h 46m
1 stop
BUF9:51 pmBuffalo

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, 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 $414. If you don’t want to visit Seattle in October, then you should wait until March to fly from Buffalo, when ticket prices are also cheap, with an average price of $419.

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 at noon, with an average ticket price of $499. Departure times at noon 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 $474 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 $368 on momondo.

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

There are 1 cabin classes 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 July 2025, prices for Buffalo to Seattle flights are approximately 32% 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

Best Price Found

$127

Fastest flight time

7h 20m

Direct flights

None

Airports in Seattle

1 airport
The best one-way flight to Seattle from Buffalo in the past 72 hours is $127. The best round-trip flight deal from Buffalo to Seattle found on momondo in the last 72 hours is $160.
The fastest flight from Buffalo to Seattle takes 7h 20m
There are no direct flights from Buffalo to Seattle. Popular non-direct route for this connection is Buffalo Airport - Seattle/Tacoma Intl Airport.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • 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 20m.

  • 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 $145Free CancellationRating
7.3
2,916 reviews
Search JetBlue flights
FrontierPriceFrom $166Free CancellationRating
5.9
3,284 reviews
Search Frontier flights
Sun Country AirPriceFrom $187Free CancellationRating
6.9
339 reviews
Search Sun Country Air flights
American AirlinesPriceFrom $316Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $332Free CancellationRating
8.0
7,983 reviews
Search Delta flights
United AirlinesPriceFrom $336Free CancellationRating
7.4
8,861 reviews
Search United Airlines flights
SouthwestPriceFrom $345Free CancellationRating
8.0
4,270 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $532Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

Traveling to a place near Seattle?

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

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 7/8
Tue 7/15

Find better results for your trip to the United States