Cheap flights from Calgary to Seattle from C$ 228

If you aren’t able to travel to Seattle during the month of November, then flying in May is also cheap. Prices for this month can be found on momondo for an average of C$ 322.

Our data shows that Friday is the least expensive day to fly to Seattle. Tickets to fly out on this day can be as low as C$ 772. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around C$ 1,818. 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 afternoon. Flights from Calgary to Seattle during this time can be as low as C$ 591. Flights at noon are often more expensive with an average ticket price of C$ 1,852.

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

You are more likely to see cheaper flights to Seattle from Calgary when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around C$ 413 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Calgary for as low as C$ 311 on momondo.

There are 4 cabin classes available to choose from on Calgary 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 31% on your flight if you consider stops on a Calgary to Seattle flight.

As of October 2026, prices for Calgary to Seattle flights are approximately 27% more expensive when compared to flights at the same time last year.

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

WestJet, Air Canada and Alaska Airlines are the top three most popular airlines that fly to Seattle from Calgary according to our data. WestJet is the first choice among our users, with 71% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 4 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Historically, on average around 15% of flights between Calgary and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 115 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.

Sunday is statistically the day of the week that experiences the fewest delays on this flight route. Tuesday 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 14% of their flights experiencing any sort of delay.

Vancouver (YVR) was the most common stop: 94% of momondo users choosing one-stop flights on this route connected there.

Flights via Vancouver (YVR) offer the lowest average round-trip price of C$ 364.

Flights connecting via Kelowna (YLW) have the shortest average one-way travel time: 3h 35m.

Kelowna (YLW) has the shortest average layover time for this route: 1h 18m.

6 flights are operational daily from Calgary to Seattle as of October 2026. The most popular departure time for this route is 11:00a.m., with 57% of flights per day taking off at noon.

The number of flights available between Calgary and Seattle is 44 per week as of October 2026. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.