CA $232 Cheap Flights from Buffalo (BUF) to Seattle (SEA)

View CA $232 flight on Mon, Sep 28, 2026Opens 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 CA $232 for one-way flights and CA $528 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, May 5 - Tue, May 12
BUF
Buffalo
SEA
Seattle
CA $528 Roundtrip, found 6 hours ago
CA $528
Roundtrip
found 6 hours ago
Select Delta flight, departing Tue, May 5 from Buffalo to Seattle, returning Tue, May 12, priced at CA $528 found 6 hours ago
Delta
Tue, May 12 - Tue, May 19
BUF
Buffalo
SEA
Seattle
CA $536 Roundtrip, found 5 hours ago
CA $536
Roundtrip
found 5 hours ago
Select Delta flight, departing Tue, May 12 from Buffalo to Seattle, returning Tue, May 19, priced at CA $536 found 5 hours ago
Delta
Wed, May 27 - Tue, Jun 9
BUF
Buffalo
SEA
Seattle
CA $544 Roundtrip, found 4 hours ago
CA $544
Roundtrip
found 4 hours ago
Select Delta flight, departing Wed, May 27 from Buffalo to Seattle, returning Tue, Jun 9, priced at CA $544 found 4 hours ago
Delta
Tue, May 12 - Sat, May 16
BUF
Buffalo
SEA
Seattle
CA $547 Roundtrip, found 5 hours ago
CA $547
Roundtrip
found 5 hours ago
Select Delta flight, departing Tue, May 12 from Buffalo to Seattle, returning Sat, May 16, priced at CA $547 found 5 hours ago
American Airlines
Wed, May 6 - Sat, May 9
BUF
Buffalo
SEA
Seattle
CA $555 Roundtrip, found 2 days ago
CA $555
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, May 6 from Buffalo to Seattle, returning Sat, May 9, priced at CA $555 found 2 days ago
Delta
Sat, May 9 - Wed, May 13
BUF
Buffalo
SEA
Seattle
CA $556 Roundtrip, found 6 hours ago
CA $556
Roundtrip
found 6 hours ago
Select Delta flight, departing Sat, May 9 from Buffalo to Seattle, returning Wed, May 13, priced at CA $556 found 6 hours ago
Delta
Tue, May 12 - Mon, May 18
BUF
Buffalo
SEA
Seattle
CA $557 Roundtrip, found 5 hours ago
CA $557
Roundtrip
found 5 hours ago
Select Delta flight, departing Tue, May 12 from Buffalo to Seattle, returning Mon, May 18, priced at CA $557 found 5 hours ago
JetBlue Airways
Thu, May 28 - Tue, Jun 9
BUF
Buffalo
SEA
Seattle
CA $645 Roundtrip, found 4 hours ago
CA $645
Roundtrip
found 4 hours ago
Select JetBlue Airways flight, departing Thu, May 28 from Buffalo to Seattle, returning Tue, Jun 9, priced at CA $645 found 4 hours ago
Sun Country Airlines
Thu, Jun 25 - Sat, Jul 4
BUF
Buffalo
SEA
Seattle
CA $659 Roundtrip, found 5 days ago
CA $659
Roundtrip
found 5 days ago
Select Sun Country Airlines flight, departing Thu, Jun 25 from Buffalo to Seattle, returning Sat, Jul 4, priced at CA $659 found 5 days ago
United
Tue, May 26 - Tue, Jun 9
BUF
Buffalo
SEA
Seattle
CA $697 Roundtrip, found 1 day ago
CA $697
Roundtrip
found 1 day ago
Select United flight, departing Tue, May 26 from Buffalo to Seattle, returning Tue, Jun 9, priced at CA $697 found 1 day ago

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city centre is 20 minutes. Flights from CA $688
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city centre20 min
Flights from CA $688

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

June is typically the cheapest month to fly

From CA $456 - CA $784 per traveller.

Frequently asked questions

How much is a flight from Buffalo Niagara International Airport to Sea-Tac Airport?
Start packing your suitcase, because round-trip flights between BUF and Sea-Tac Airport start from CA $528. That's based on airfares listed within the last 7 days on Expedia for flights departing within the next year. Prices can go up quickly, so book now to nab the best deal. 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 Seattle - Tacoma Intl. Airport (SEA)?
When it comes to cancellation fees, every airline has its own terms and conditions. If you decide to cancel your vacation, visit our Customer Service Portal.
How do I find cheap flights from BUF to SEA that have flexible change policies?
Plenty of carriers offer the option to reschedule your flight at no extra charge. All you pay is the cost difference between flights. When searching for Buffalo Niagara International Airport to SEA flights, you'll see a "No change fees" box for you to pick.
How many hours is the flight from Buffalo Niagara International Airport to Sea-Tac Airport?
Consider bringing your own on-board entertainment, as it takes roughly 7 hours and 43 minutes to fly to SEA from Buffalo Niagara Intl. Airport (BUF). A good set of noise-cancelling headphones will also be useful.
How far is the flight from BUF to SEA?
The flight distance from Buffalo Niagara Intl. Airport (BUF) to Seattle - Tacoma Intl. Airport (SEA) is 3,400 kilometres. Pack yourself a snack, a drink and a laptop filled with movies. Keep yourself entertained and time will zip by.
Which airlines fly direct from Buffalo Niagara Intl. Airport (BUF) to SEA?
Flying directly between Buffalo Niagara Intl. Airport (BUF) and Sea-Tac Airport isn't possible at this time. However, you'll still be able to find a flight to SeaTac with at least one stop.
Are BUF to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
It is possible to pick up great last-minute deals from Buffalo Niagara Intl. Airport (BUF) to Seattle - Tacoma Intl. Airport (SEA), but it can also be hit-or-miss. As many airlines advertise prices up to a year in advance, it's worth keeping an eye on fares early and being ready to pounce when you spot a bargain. Expedia compares air carrier prices and updates flight deals all the time, so you can be sure you're always getting the latest offers.

Travel information

Origin airport
Buffalo Niagara Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, Sun Country Airlines, United
Roundtrip price
CA $527
Distance
3385 km

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