Cheap flights from Seattle to Alaska from $171

If you don’t want to visit Alaska in September, then you should wait until February to fly from Seattle, when ticket prices are also cheap, with an average price of $137.

The cheapest day to depart from Seattle to Alaska is on a Thursday. Travelers who choose to depart for Alaska on a Thursday will often find tickets for as low as $399. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Alaska for around $485.

Our data shows that the cheapest Seattle to Alaska flights are usually those with departure times in the morning. Our users have found flights to Alaska in the morning for as low as $421. At noon is when there is more demand to fly to Alaska, so prices are often more expensive at around $453 per ticket.

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

You are more likely to see cheaper flights to Alaska from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Alaska for around $394 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Alaska from Seattle for as low as $335 on momondo.

Alaska Airlines, United Airlines, and American Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Alaska

Alaska Airlines, Delta and Hawaiian Airlines are the top three most popular airlines that fly to Alaska from Seattle according to our data. Alaska Airlines is the first choice among our users, with 80% of people opting to fly with this airline when traveling to Alaska. Keep in mind that there are 4 different airlines that fly to Alaska on a routine basis, so you have a few additional options to choose from.

68 flights are operational daily from Seattle to Alaska as of May 2026. The most popular departure time for this route is 7:00PM, with 57% of flights per day taking off in the evening.

The number of flights available between Seattle and Alaska is 477 per week as of May 2026. The most frequent departure day is Sat, with 22% of weekly flights leaving on this day.