Cheap flights from Alberta to Seattle from $148

In general, November is the cheapest month to fly from Alberta to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $212. If you don’t want to visit Seattle in November, then you should wait until September to fly from Alberta, when ticket prices are also cheap, with an average price of $224.

On average, the least expensive day to fly to Seattle from Alberta is on a Thursday. momondo users have found tickets for Thursday departures for as low as $373. 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 Alberta because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,724.

Flying to Seattle from Alberta in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $327 when looking at flights departing in the afternoon. Flights to Seattle are more costly at noon, with an average ticket price of $1,303. Departure times at noon 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 Alberta - Seattle/Tacoma Intl flight prices

You are more likely to see cheaper flights to Seattle from Alberta when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $275 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Alberta for as low as $217 on momondo.

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

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

WestJet, Air Canada and Alaska Airlines are the top three most popular airlines that fly to Seattle from Alberta according to our data. WestJet is the first choice among our users, with 69% of people opting to fly with this airline when traveling 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.

The number of flights available between Alberta and Seattle is 20 per day as of August 2026. The most frequent departure time is 11:00AM, with 68% of daily flights leaving at noon.

141 flights are operational weekly from Alberta to Seattle as of August 2026. The most popular departure day for this route is Fri, with 19% of flights per week taking off on this day.