Cheap flights from Austin to Seattle from $149

In general, January is the cheapest month to fly from Austin to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $232. If you don’t want to visit Seattle in January, then you should wait until April to fly from Austin, when ticket prices are also cheap, with an average price of $253.

On average, the least expensive day to fly to Seattle from Austin is on a Thursday. momondo users have found tickets for Thursday departures for as low as $400. 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 Austin because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $583.

Flying to Seattle from Austin in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $403 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the morning, with an average ticket price of $455. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Austin Bergstrom to Seattle/Tacoma Intl for the best Austin Bergstrom - Seattle/Tacoma Intl flight prices

You are more likely to see cheaper flights to Seattle from Austin when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $339 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Austin for as low as $314 on momondo.

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

No. A direct flight is the cheapest option for a flight between Austin to Seattle.

As of September 2026, prices for Austin to Seattle flights are approximately 7% more expensive when compared to flights at the same time last year.

Southwest, Alaska Airlines, and Delta are the most popular carriers operating from Austin Bergstrom to Seattle/Tacoma Intl

Alaska Airlines, Delta and Southwest are the top three most popular airlines that fly to Seattle from Austin according to our data. Alaska Airlines is the first choice among our users, with 54% 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 10% of flights between Austin and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 164 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.

Saturday 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 9% of their flights experiencing any sort of delay.

As of September 2026, there are 16 flights per day flying from Austin to Seattle. The most common time of day flights depart is 8:00AM, with 55% of flights taking off at noon.

As of September 2026, 113 flights take off from Austin and land in Seattle each week. The most common flight departure day for this route is Tue, with 19% of weekly flights taking off on this day.