Cheap Alaska Airlines flights San Francisco (SFO) to Seattle (SEA)

Finding cheap one-way Alaska Airlines flights from SFO to SEA on Expedia is easy — just filter by “Price (lowest to highest).” Alternatively, check out our affordable return fares for your next exciting vacation.**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.

Browse for round-trip or one-way flights to Seattle in January or February. You could find cheaper fares with Alaska Airlines during these off-peak months.

Begin your search one to three months before your departure to find cheap fares on Alaska Airlines flights from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Nail your timing, and you can enjoy significant savings on domestic flights.*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.

Yes, you can fly from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA) on any of Alaska Airlines’s 54 weekly direct flights. Make use of our “Nonstop” and “Airline” filters to find the Alaska Airlines flight that’ll land at SEA at your preferred time.

It takes around 2h 17m to travel nonstop from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA) with Alaska Airlines.

Saturday has the most Alaska Airlines flights from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA). With 9 daily departures, this is a great day to book something that will fit your plans.

Setting off from SFO at 6:00AM UTC-8, the earliest Alaska Airlines flight to SEA lands at 8:19AM UTC-8. Flying early means you’re less likely to encounter cancellations or delays.* After something later? The last Alaska Airlines flight from SFO to SEA departs at 7:33PM UTC-8 and touches down at 10:00PM UTC-8.*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.

Alaska Airlines flights from San Francisco Intl. Airport (SFO) to Seattle touch down at Seattle - Tacoma Intl. Airport (SEA) and Snohomish County - Paine Field Airport (PAE). The main Seattle gateway served by this airline is SEA. It’s worth checking out flights arriving at nearby airports on Expedia as they may offer cheaper tickets.

Alaska Airlines makes traveling from SFO to SEA enjoyable with a rewarding loyalty program and an excellent in-flight experience. You could even start earning points with Mileage Plan. Be sure to sign up to Expedia’s free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You’ll likely board a Boeing 737-900 or a Boeing 737-800 when flying Alaska Airlines from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA). However, keep in mind that a different aircraft may be used due to operational factors.

It’s usually possible to cancel or modify your flight, although there may be a charge if you made your booking over 24 hours ago. Want to keep your options open? Apply the “No cancel fee” or “Changes included” filter to find flights that won’t charge extra if you need to alter your plans. To modify your itinerary, visit “Trips,” select your flight and click on “Manage Booking” for more information.