Cheap flights from Seattle to Tokyo from $340

The cheapest month to fly to Tokyo from Seattle is in January. Flight prices, which tend to average around $672, are often lower during this time because this is during the off-season. If you’re not able to fly to Tokyo in January, then February is your next best option. Flight prices from Seattle to Tokyo during February average around $722.

The cheapest day to depart on your flight to Tokyo is on a Monday when prices can be found for as low as $831. This is often the case because there is less demand to fly during this day of the week. Flights from Seattle to Tokyo on a Saturday will generally be more expensive and average around $964. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

In the afternoon is the cheapest time of day to fly from Seattle to Tokyo when you can find flight prices for as low as $835. Flying to Tokyo in the afternoon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Tokyo is at noon when prices are around $987.

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

You are more likely to see cheaper flights to Tokyo from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Tokyo for around $925 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Tokyo from Seattle for as low as $812 on momondo.

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Tokyo 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 1% on your flight if you consider stops on a Seattle to Tokyo flight.

As of February 2026, prices for Seattle to Tokyo flights are approximately 29% cheaper when compared to flights at the same time last year.

United Airlines, Delta, and Korean Air are the most popular carriers operating from Seattle/Tacoma Intl to Tokyo

ANA, Delta and Japan Airlines are the top three most popular airlines that fly to Tokyo from Seattle according to our data. ANA is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Tokyo. Keep in mind that there are 12 different airlines that fly to Tokyo on a routine basis, so you have a few additional options to choose from.

Historically, on average around 18% of flights between Seattle and Tokyo have experienced a delay on any given week. The average delay length over the past 12 months has been 118 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday 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 8% of their flights experiencing any sort of delay.

Incheon (ICN) was the most common stop: 31% of momondo users choosing 1-stop flights on this route connected there.

Flights via Incheon (ICN) offer the lowest average round-trip price of $595.

Flights connecting via Vancouver (YVR) have the shortest average one-way travel time: 13h 05m.

Honolulu (HNL) has the shortest average layover time for this route: 2h 33m.

As of February 2026, there are 10 flights per day flying from Seattle to Tokyo. The most common time of day flights depart is 12:00PM, with 81% of flights taking off in the afternoon.

The number of flights available between Seattle and Tokyo is 71 per week as of February 2026. The most frequent departure day is Wed, with 15% of weekly flights leaving on this day.