Cheap flights from Canada to Seattle from $115

In general, January 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 $63. If you don’t want to visit Seattle in January, then you should wait until September to fly from Canada, when ticket prices are also cheap, with an average price of $286.

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 $431. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday 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 $524.

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 $439 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $570. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Vancouver Intl 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 $337 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 $292 on momondo.

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

Air Canada, WestJet and Alaska Airlines are the top three most popular airlines that fly to Seattle from Canada according to our data. Air Canada is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 6 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Historically, on average around 19% 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 127 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. Friday 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 May 2026, 52 flights take off from Canada and land in Seattle each day. The most common flight departure time for this route is 11:00AM, with 47% of daily flights taking off at noon.

The number of flights available between Canada and Seattle is 368 per week as of May 2026. The most frequent departure day is Mon, with 21% of weekly flights leaving on this day.