Cheap Alaska Airlines flights Los Angeles (LAX) to Seattle (SEA)

Finding cheap one-way Alaska Airlines flights from LAX to SEA on Expedia is a breeze — just filter by “Price (lowest to highest).” Or check out our affordable round-trip fares for your next exciting adventure.**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 one-way or return flights to Seattle in January or February. You could find an affordable fare with Alaska Airlines during these off-peak months.

Begin your search one to three months ahead of your departure date to get cheaper fares on Alaska Airlines flights from Los Angeles Intl. Airport (LAX) to Seattle - Tacoma Intl. Airport (SEA). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to 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.* Get your timing right, and you can enjoy significant savings on domestic journeys.*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 offers direct flights from Los Angeles Intl. Airport (LAX) to Seattle - Tacoma Intl. Airport (SEA), with 66 departures every week. Simply apply the “Nonstop” and “Airline” filters while searching on Expedia to find all direct Alaska Airlines flights to SEA.

Take off from Los Angeles Intl. Airport (LAX) for Seattle - Tacoma Intl. Airport (SEA) on a nonstop Alaska Airlines flight, and you’ll be airborne for around 2h 57m.

If it’s flexibility you’re after, Wednesday offers the most choice for Alaska Airlines flights from Los Angeles Intl. Airport (LAX) to Seattle - Tacoma Intl. Airport (SEA). Take your pick of 11 different departures.

The first Alaska Airlines flight from LAX to SEA takes off at 7:00AM UTC-8, landing at 10:00AM UTC-8. If you want to set off later, the last Alaska Airlines flight leaves LAX at 9:05PM UTC-8 and touches down at SEA at 11:59PM UTC-8. Flying early is generally a smart option as morning and mid-morning flights are less likely to experience 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.

Most Alaska Airlines flights from Los Angeles Intl. Airport (LAX) to Seattle arrive at Seattle - Tacoma Intl. Airport (SEA). This is the airline’s main entry point to the city. It’s worth browsing Expedia for flights to nearby airports such as Snohomish County - Paine Field Airport (PAE), as prices may be lower.

Jetting off from LAX to SEA with Alaska Airlines means enjoying a variety of perks, including top-tier customer service and a rewarding loyalty program. Plus, when you book through Expedia, One Key™ members can collect OneKeyCash™* to spend on select future travel purchases. That’s in addition to 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.

Alaska Airlines generally uses Boeing 737-800 planes for flights from Los Angeles Intl. Airport (LAX) to Seattle - Tacoma Intl. Airport (SEA). This airline also operates the Boeing 737 MAX 9 on this route. Remember that aircraft type can change due to operational requirements, so the plane you board might be different when you travel.

Changes are usually free within 24 hours of making a booking, but your airline may charge a fee after that time. For more details about modifying your reservation, go to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the flexibility to change your plans without being charged, apply the “Changes included” and “No cancel fee” filters when planning your trip.