Cheap flights from Japan to Seattle from $409

In general, December is the cheapest month to fly from Japan to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $318. If you don’t want to visit Seattle in December, then you should wait until February to fly from Japan, when ticket prices are also cheap, with an average price of $318.

On average, the least expensive day to fly to Seattle from Japan is on a Thursday. momondo users have found tickets for Thursday departures for as low as $783. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from Japan because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,048.

Flying to Seattle from Japan in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $906 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the evening, with an average ticket price of $1,459. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Tokyo Haneda to Seattle/Tacoma Intl for the best Japan - Seattle/Tacoma Intl flight prices

You could potentially save up to 21% on your flight if you consider stops on a Japan to Seattle flight.

EVA Air, China Airlines, and STARLUX Airlines are the most popular carriers operating from Japan to Seattle/Tacoma Intl

Delta, EVA Air and STARLUX Airlines are the top three most popular airlines that fly to Seattle from Japan according to our data. Delta is the first choice among our users, with 64% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 7 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 Japan and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 130 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.

Monday 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, ANA have had the least number of delays on this route over the last 12 months; with about 6% of their flights experiencing any sort of delay.

10 flights are operational daily from Japan to Seattle as of May 2026. The most popular departure time for this route is 5:00PM, with 58% of flights per day taking off in the afternoon.

As of May 2026, 70 flights take off from Japan and land in Seattle each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.