Cheap flights from Canada to Seattle from C$ 136

If you aren’t able to travel to Seattle during the month of February, then flying in October is also cheap. Prices for this month can be found on momondo for an average of C$ 417.

Our data shows that Thursday is the least expensive day to fly to Seattle. Tickets to fly out on this day can be as low as C$ 546. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around C$ 814. 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 Canada to Seattle during this time can be as low as C$ 513. Flights in the morning are often more expensive with an average ticket price of C$ 878.

Fly from Calgary to Seattle/Tacoma Intl for the best Canada - Seattle/Tacoma Intl flight prices

You are more likely to see cheaper flights to Seattle from Canada when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around C$ 464 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Canada for as low as C$ 406 on momondo.

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

Alaska Airlines, WestJet, and Air Canada are the most popular carriers operating from Canada to Seattle/Tacoma Intl

WestJet, Air Canada and Alaska Airlines are the top three most popular airlines that fly to Seattle from Canada according to our data. WestJet is the first choice among our users, with 38% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 8 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Historically, on average around 18% of flights between Canada and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 130 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, Alaska Airlines has had the least delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

54 flights are operational daily from Canada to Seattle as of March 2026. The most popular departure time for this route is 7:00p.m., with 43% of flights per day taking off at noon.

As of March 2026, there are 381 flights per week flying from Canada to Seattle. The most common day of the week flights depart is Mon, with 18% of flights taking off on this day.