Cheap Alaska Airlines flights San Diego (SAN) to Seattle (SEA)

Make use of the “Price (lowest to highest)” filter on Expedia to look for cheap Alaska Airlines round-trip flights from SAN to SEA. Affordable one-way options 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.

January is one of the most affordable months to fly to Seattle with Alaska Airlines. You could also find great deals on one-way and round-trip tickets in February.

Start searching one to three months before your departure to score cheap fares on Alaska Airlines flights from San Diego Intl. Airport (SAN) 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 reduce 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 trips.*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.

Alaska Airlines operates direct flights from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA), with 49 departures every week. Simply select the “Nonstop” and “Airline” filters while searching on Expedia to see all direct Alaska Airlines flights to SEA.

Depart San Diego Intl. Airport (SAN) for Seattle - Tacoma Intl. Airport (SEA) on a direct Alaska Airlines flight, and you’ll be in the sky for about 3h 7m.

If you’re looking for flexibility, Monday offers the most choice for Alaska Airlines flights from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA). Take your pick of 7 different departures.

Departing SAN at 6:20AM UTC-8, the first Alaska Airlines flight to SEA arrives at 9:30AM UTC-8. Flying earlier in the day means you’re less likely to encounter cancellations or delays.* After something later? The last Alaska Airlines flight from SAN to SEA departs at 6:52PM UTC-8 and touches down at 9:59PM 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.

Most Alaska Airlines flights from San Diego Intl. Airport (SAN) to Seattle touch down at Seattle - Tacoma Intl. Airport (SEA). This is the airline’s primary gateway to this city. It’s also worth checking Expedia for flights to nearby airports such as Snohomish County - Paine Field Airport (PAE), as tickets may be cheaper.

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

You’ll likely be onboard a Boeing 737-900 or a Boeing 737 MAX 9 when flying Alaska Airlines from San Diego Intl. Airport (SAN) to Seattle - Tacoma Intl. Airport (SEA). However, keep in mind that a different plane could be assigned to your route due to operational demands.

Depending on the ticket type you purchased, a fee typically applies if you change or cancel your booking more than 24 hours after it has been confirmed. To find tickets with more flexibility, select our “Changes included” or “No cancel fee” filter when you look for flights. For more information on canceling or modifying your reservation, head to “Trips,” select your flight and tick “Manage Booking.”