£107 Cheap Flights from Buffalo (BUF) to Seattle (SEA)

View £107 flight on Sat, 25 Oct 2025Opens in a new window

Popular airlines from Buffalo Niagara Intl. Airport (BUF) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Buffalo (BUF) to Seattle (SEA)

Prices were available within the past 7 days and start at £107 for one-way flights and £233 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Tue, 9 Sep - Tue, 16 Sep
BUF
Buffalo
SEA
Seattle
£233 Return, found 5 days ago
£233
Return
found 5 days ago
Select JetBlue Airways flight, departing Tue, 9 Sep from Buffalo to Seattle, returning Tue, 16 Sep, priced at £233 found 5 days ago
JetBlue Airways
Fri, 24 Oct - Sat, 25 Oct
BUF
Buffalo
SEA
Seattle
£233 Return, found 2 days ago
£233
Return
found 2 days ago
Select JetBlue Airways flight, departing Fri, 24 Oct from Buffalo to Seattle, returning Sat, 25 Oct, priced at £233 found 2 days ago
American Airlines
Mon, 27 Oct - Wed, 29 Oct
BUF
Buffalo
SEA
Seattle
£246 Return, found 2 days ago
£246
Return
found 2 days ago
Select American Airlines flight, departing Mon, 27 Oct from Buffalo to Seattle, returning Wed, 29 Oct, priced at £246 found 2 days ago
American Airlines
Mon, 27 Oct - Wed, 29 Oct
BUF
Buffalo
SEA
Seattle
£246 Return, found 2 days ago
£246
Return
found 2 days ago
Select American Airlines flight, departing Mon, 27 Oct from Buffalo to Seattle, returning Wed, 29 Oct, priced at £246 found 2 days ago
Delta
Thu, 30 Oct - Mon, 3 Nov
BUF
Buffalo
SEA
Seattle
£251 Return, found 2 days ago
£251
Return
found 2 days ago
Select Delta flight, departing Thu, 30 Oct from Buffalo to Seattle, returning Mon, 3 Nov, priced at £251 found 2 days ago
Delta
Thu, 30 Oct - Fri, 31 Oct
BUF
Buffalo
SEA
Seattle
£255 Return, found 2 days ago
£255
Return
found 2 days ago
Select Delta flight, departing Thu, 30 Oct from Buffalo to Seattle, returning Fri, 31 Oct, priced at £255 found 2 days ago
American Airlines
Mon, 27 Oct - Wed, 29 Oct
BUF
Buffalo
SEA
Seattle
£261 Return, found 2 days ago
£261
Return
found 2 days ago
Select American Airlines flight, departing Mon, 27 Oct from Buffalo to Seattle, returning Wed, 29 Oct, priced at £261 found 2 days ago
Delta
Wed, 29 Oct - Sat, 1 Nov
BUF
Buffalo
SEA
Seattle
£263 Return, found 2 days ago
£263
Return
found 2 days ago
Select Delta flight, departing Wed, 29 Oct from Buffalo to Seattle, returning Sat, 1 Nov, priced at £263 found 2 days ago
United
Mon, 27 Oct - Wed, 29 Oct
BUF
Buffalo
SEA
Seattle
£358 Return, found 2 days ago
£358
Return
found 2 days ago
Select United flight, departing Mon, 27 Oct from Buffalo to Seattle, returning Wed, 29 Oct, priced at £358 found 2 days ago
Alaska Airlines
Tue, 9 Sep - Tue, 16 Sep
BUF
Buffalo
SEA
Seattle
£381 Return, found 5 days ago
£381
Return
found 5 days ago
Select Alaska Airlines flight, departing Tue, 9 Sep from Buffalo to Seattle, returning Tue, 16 Sep, priced at £381 found 5 days ago

Find the cheapest month to fly from Buffalo (BUF) to Seattle (SEA)

September is typically the cheapest month to fly

From £176 - £355 per traveller.

Graph displaying average flight prices per month

Flight from Buffalo to Seattle route information
Origin airport
Buffalo Niagara Intl.
Destination airport
Seattle - Tacoma Intl.
Return price
£232
Distance
3385 km

Compare flights from Buffalo to Seattle easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Buffalo to Seattle. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Buffalo Niagara Intl. to Seattle - Tacoma Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Buffalo Niagara Intl. (BUF) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from Buffalo to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Buffalo Niagara Intl. to Seattle - Tacoma Intl. start at just £233 and range up to £381.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Buffalo and Seattle
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Buffalo to Seattle flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Buffalo Niagara Intl. to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from BUF to Sea-Tac Airport?
Round-trip flights from BUF to Seattle - Tacoma Intl. Airport (SEA) start from £233. This price is based on fares quoted within the last 7 days on Expedia for flights departing within the next year — book now to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Buffalo Niagara Intl. Airport (BUF) to SEA?
This varies between airlines, as each has its own terms and conditions. Head to the Customer Service Portal, where you'll find instructions on how to cancel your flight online.
How do I find cheap flights from Buffalo Niagara International Airport to Seattle - Tacoma Intl. Airport (SEA) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for BUF to SEA flights, you'll see a "no change fees" filter for you to select.
How far is the flight from BUF to Sea-Tac Airport?
Expect to be cruising at altitude for a while, as the flight distance from Buffalo Niagara International Airport to Seattle - Tacoma Intl. Airport (SEA) is 3,400 kilometres. Create a playlist of your favourite songs before you leave home to stay entertained during the flight.
Which airlines fly direct from BUF to SEA?
Right now, no airlines offer direct flights from BUF to Sea-Tac Airport. You'll have to book a flight with one or more stops. To score the best connections and price, lock in your airfare well in advance.
Are BUF to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
Flight tickets from Buffalo Niagara International Airport to Sea-Tac Airport are available up to 12 months before departure on Expedia. And although you may occasionally score fantastic last-minute deals, it's not something you should bank on. Also, booking your flights in advance means you'll have more options — and you can avoid being wedged in the dreaded middle seat! We regularly update our fares to make sure you get the biggest bargains, so check back often for all the latest specials.

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