Cheap Alaska Airlines flights Detroit (DTW) to Seattle (SEA)

Scoring cheap one-way Alaska Airlines flights from DTW to SEA on Expedia is simple — just filter by “Price (lowest to highest).” Or check out our affordable round-trip fares for your next 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.

January is one of the least expensive months to jet away to Seattle with Alaska Airlines. You could also find excellent prices on return and one-way fares in February.

Begin your search one to three months ahead of your travel date to find cheap fares on Alaska Airlines flights from Detroit Metropolitan Wayne County Airport (DTW) 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.* Get the timing right, 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.

Take off on one of Alaska Airlines’s 5 direct weekly flights from Detroit Metropolitan Wayne County Airport (DTW) to Seattle - Tacoma Intl. Airport (SEA). To see what’s available, enter your destination, origin and dates and hit search. Then select the “Nonstop” and “Airline” filters.

The travel time for a nonstop Alaska Airlines flight from Detroit Metropolitan Wayne County Airport (DTW) to Seattle - Tacoma Intl. Airport (SEA) takes around 5h 17m.

Taking off from DTW at 4:42PM UTC-5, the earliest Alaska Airlines flight to SEA arrives at 6:59PM UTC-8. Flying earlier in the day means you’ll be less likely to encounter delays or cancellations.* Not a morning person? The last Alaska Airlines flight from DTW to SEA departs at 4:42PM UTC-5 and touches down at 6:59PM 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.

Alaska Airlines flights from Detroit Metropolitan Wayne County Airport (DTW) to Seattle touch down at Seattle - Tacoma Intl. Airport (SEA). This is the main entry point to this destination.

Alaska Airlines makes flying from DTW to SEA enjoyable with top-tier customer service and a rewarding loyalty program. You even have the chance to collect points with Mileage Plan. Be sure to join our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*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 MAX 9 or a Boeing 737-900 when flying Alaska Airlines from Detroit Metropolitan Wayne County Airport (DTW) to Seattle - Tacoma Intl. Airport (SEA). However, keep in mind that a different aircraft may be used depending on operational reasons.

Depending on the type of ticket you purchased, a fee generally applies if you cancel or reschedule your flight more than 24 hours after it has been confirmed. To secure flexible plane tickets, select our “Changes included” or “No cancel fee” filter when looking for flights. For additional information on changing or canceling your reservation, head to “Trips,” select your flight and tick “Manage Booking.”