Cheap flights from Canada to Seattle from $61

In general, February is the cheapest month to fly from Canada to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $255. If you don’t want to visit Seattle in February, then you should wait until January to fly from Canada, when ticket prices are also cheap, with an average price of $266.

On average, the least expensive day to fly to Seattle from Canada is on a Thursday. momondo users have found tickets for Thursday departures for as low as $445. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Canada because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $804.

Flying to Seattle from Canada in the evening is the least expensive time of day to depart. momondo users have found prices as low as $461 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $694. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 $373 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 $301 on momondo.

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

WestJet, Air Canada, and Alaska Airlines 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 37% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 5 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 125 minutes.

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

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

According to our data, Alaska Airlines have had the least number of delays on this route over the last 12 months; with about 14% of their flights experiencing any sort of delay.

As of September 2026, 90 flights take off from Canada and land in Seattle each day. The most common flight departure time for this route is 5:00PM, with 42% of daily flights taking off in the afternoon.

The number of flights available between Canada and Seattle is 636 per week as of September 2026. The most frequent departure day is Fri, with 16% of weekly flights leaving on this day.