Cheap flights from Calgary to Seattle from $148

In general, November is the cheapest month to fly from Calgary to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $197. If you don’t want to visit Seattle in November, then you should wait until January to fly from Calgary, when ticket prices are also cheap, with an average price of $208.

On average, the least expensive day to fly to Seattle from Calgary is on a Friday. momondo users have found tickets for Friday departures for as low as $374. 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 Calgary because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,728.

Flying to Seattle from Calgary in the evening is the least expensive time of day to depart. momondo users have found prices as low as $298 when looking at flights departing in the evening. Flights to Seattle are more costly at noon, with an average ticket price of $1,332. 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 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 $257 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 $198 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 16% on your flight if you consider stops on a Calgary to Seattle flight.

As of June 2026, prices for Calgary to Seattle flights are approximately 14% more expensive when compared to flights at the same time last year.

WestJet, United Airlines, 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 72% 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.

Historically, on average around 18% 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 117 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.

Sunday is statistically the day of the week which experiences the fewest number of 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 have had the least number of delays on this route over the last 12 months; with about 15% of their flights experiencing any sort of delay.

As of June 2026, there are 9 flights per day flying from Calgary to Seattle. The most common time of day flights depart is 6:00AM, with 78% of flights taking off at noon.

As of June 2026, there are 66 flights per week flying from Calgary to Seattle. The most common day of the week flights depart is Thu, with 21% of flights taking off on this day.