$218 Find Cheap Flights from Washington to Japan - Compare and Save

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington to Japan departing on 9/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Useful Info

Good to know

Low season

August

Cheapest flight

$218
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from Seattle to Osaka Kansai Intl

Flights from Washington to Japan: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Washington to Japan 
SarahFlew with ANA
SEA
-
HND
Apr 2026
Google Maps and Google translate are your friends! Also, make sure to have cash, most places do accept card, but in the big markets, more places will be cash only.
GFlew with Hawaiian Airlines
SEA
-
NRT
Feb 2026
Bring your own tasty snacks because the provided food is average airplane food. Bring your own entertainment; download to your phone to watch something interesting.

FAQs for booking flights from Washington to Japan

  • How does KAYAK find such low prices on flights from Washington to Japan?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Japan.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Japan?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington to Japan is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington to Japan?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Washington to Japan with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Japan?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Washington to Japan up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines fly most frequently to Japan?

    Washington and Japan are connected by different airlines. The airlines that fly that route the most regularly are Alaska Airlines (14 flights per week), American Airlines (7 flights per week), and Delta (7 flights per week).

  • How many airports are there in Japan?

    There are 79 airports in Japan. The busiest airport is Tokyo Haneda Airport (HND), with 28% of all flights arriving there.

  • Which is the cheapest airport to fly into in Japan?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Japan is Tokyo Haneda Airport (HND), with an average flight price of $578.

  • What is the cheapest day to fly to Japan?

    Based on KAYAK data, the cheapest day to fly to Japan is Tuesday where round-trip tickets can be as cheap as $872. On the other hand, the most expensive day to fly is Friday, where round-trip prices are $986 on average.

  • What is the cheapest time of day to fly to Japan?

    The cheapest time of day to fly to Japan is generally in the evening, when round-trip flights cost $868 on average. Morning departures are around 12% more expensive than evening flights, on average. The most expensive time of day to fly to Japan is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $983.

  • What is the cheapest flight to Japan?

    The cheapest ticket to Japan from Washington found in the last 5 days was to Tokyo Haneda Airport, at $569 round-trip. The most popular route is Seattle (SEA) to Tokyo Haneda Airport (HND) and the cheapest round-trip airline ticket found on this route in the last 5 days was $569.

  • What is the cheapest month to fly from Washington to Japan?

    The cheapest month for flights from Washington to Japan is January, when tickets cost $367 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of round-trip tickets is $652 and $577 respectively.

  • How far in advance should I book a flight from Washington to Japan?

    To get a below average price on the flight from Washington to Japan, you should book around 4 weeks before departure, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

  • How many cities have direct flights to Japan?

    From Washington, there are direct flights to Japan from 1 city. This city is Seattle and there are 70 direct flights each week.

  • How many direct flights to Japan are there each day?

    There are around 10 direct flights from within Washington to Japan every day. Most flights (80%) depart in the afternoon.

  • How many direct flights to Japan are there each week?

    Each week there are around 70 direct flights from within Washington to Japan. The most common day for departures is Monday, with 14% of flights taking off on this day.

  • How long is the flight to Japan?

    An average nonstop flight from Washington to Japan takes 22h 32m, covering a distance of 5008 miles. The shortest route is Seattle (SEA) to Tokyo Narita Airport (NRT) with an average flight time of 10h 05m.

  • How many long-haul flights are there to Japan each week?

    There are not any medium-haul (3-6 hour flight duration) or short-haul (up to 3 hour flight duration) flights to Japan. Instead, there are 70 long-haul flights (6-12 hour flight duration), with the most arriving from Seattle.

  • What are the most popular destinations in Japan?

    Based on KAYAK flight searches, the most popular destination is Tokyo (92% of total searches to Japan). The next most popular destinations are Osaka (5%) and Okinawa (1%). Searches for flights to Sapporo Chitose Airport (1%), to Fukuoka (1%) and to Hiroshima (0%) are also popular.

Everything you need to know for your flight to Japan

Cabin class types available on flights to Washington

Cabin classes available on flights to Washington. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.