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

View AU$346 flight on Tue, 4 Aug 2026Opens in a new window

Flight 1

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 for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

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

June is typically the cheapest month to fly

From AU$478 - AU$821 per traveller.

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 . 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.

Travel information

Origin airport
Buffalo Niagara Intl.
Destination airport
Seattle - Tacoma Intl.
Distance
3385 km

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