Cheap flights from Detroit to Seattle from C$ 140

If you aren’t able to travel to Seattle during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of C$ 410.

Our data shows that Tuesday is the least expensive day to fly to Seattle. Tickets to fly out on this day can be as low as C$ 502. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around C$ 989. These prices are subject to change though, so be sure to set up a Price Alert for flights to Seattle.

Our most recent data shows that the best time of day to fly to Seattle is in the evening. Flights from Detroit to Seattle during this time can be as low as C$ 473. Flights in the afternoon are often more expensive with an average ticket price of C$ 637.

Fly from Detroit Metropolitan Wayne County to Seattle/Tacoma Intl for the best Detroit - Seattle/Tacoma Intl flight prices

You are more likely to see cheaper flights to Seattle from Detroit when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around C$ 583 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Detroit for as low as C$ 551 on momondo.

There are 4 cabin classes available to choose from on Detroit to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 26% on your flight if you consider stops on a Detroit to Seattle flight.

As of October 2026, prices for Detroit to Seattle flights are approximately 69% more expensive when compared to flights at the same time last year.

Frontier is the most popular carrier operating from Detroit to Seattle/Tacoma Intl

Alaska Airlines, Delta and Frontier are the top three most popular airlines that fly to Seattle from Detroit according to our data. Alaska Airlines is the first choice among our users, with 52% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 3 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

7 flights are operational daily from Detroit to Seattle as of October 2026. The most popular departure time for this route is 8:00a.m., with 42% of flights per day taking off in the afternoon.

50 flights are operational weekly from Detroit to Seattle as of October 2026. The most popular departure day for this route is Fri, with 40% of flights per week taking off on this day.