$259 Cheap Alaska Airlines flights Seattle (SEA) to Buffalo (BUF)

View $259 flight on Mon, Aug 11, 2025Opens in a new window

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$259 Cheap Alaska Airlines flights Seattle (SEA) to Buffalo (BUF)

Prices were available within the past 7 days and start at $259 for one-way flights and $990 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Mon, Aug 25 - Wed, Aug 27
PAE
Seattle
BUF
Buffalo
$990 Roundtrip, found 1 day ago
$990
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Mon, Aug 25 from Seattle to Buffalo, returning Wed, Aug 27, priced at $990 found 1 day ago
Flights from Seattle (SEA) to Buffalo (BUF)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Buffalo Niagara Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United
Popular airline
JetBlue Airways
Distance
2116 mi

Frequently asked questions

How much is an Alaska Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Buffalo Niagara Intl. Airport (BUF)?
Set the "Price (lowest to highest)" filter on Expedia to find cheap Alaska Airlines return flights from $990 from SEA to BUF. Affordable one-way tickets from $259 are available too.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SEA to BUF with Alaska Airlines?
Alaska Airlines flights to Buffalo are usually more affordable in the off-peak months of January and February. Whether you're searching for a return or one-way ticket, you could find a better deal then.
What is the cheapest time to book flights from Seattle - Tacoma Intl. Airport (SEA) to Buffalo Niagara Intl. Airport (BUF) with Alaska Airlines?
Look for affordable Alaska Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to Buffalo Niagara Intl. Airport (BUF) one to three months prior to your departure day. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare type and journey, the ideal day to book a domestic flight is usually Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Alaska Airlines fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to Buffalo Niagara Intl. Airport (BUF)?
Simply enter your dates, click search and check the "Nonstop" filter on Expedia to browse any direct flights from SEA to BUF with Alaska Airlines or another carrier.
What is the earliest Alaska Airlines flight from SEA to BUF?
Browse Alaska Airlines's earliest flights from SEA to BUF by checking the "Morning" and "Early Morning" filters. Not only will you get to where you're going sooner, early departures also experience 20% fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Alaska Airlines fly into in Buffalo?
Alaska Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to Buffalo touch down at Buffalo Niagara Intl. Airport (BUF). This is the main entry point to this city.
Why fly with Alaska Airlines from SEA to BUF?
Heading from SEA to BUF with Alaska Airlines means enjoying a host of perks, including top-tier customer service and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to redeem on select future travel purchases. That's on top of the Mileage Plan points you can earn with Alaska Airlines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Alaska Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Buffalo Niagara Intl. Airport (BUF)?
In most cases, you can change or cancel your flight, although there may be additional charges if you made your booking over 24 hours ago. Need flexible options? Use our "Changes included" or "No cancel fee" filter to find flights that won't charge extra if you need to revise your plans. To modify your booking, head to "Trips," select your flight and click on "Manage Booking" for further information.

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*Available to One Key members.