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Cheap flights from Washington to Japan from $320

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Japan departing on 11/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Asiana Airlines Logo
12:10 am - 6:05 pmSEA-KIX
24h 55m1 stop
Asiana Airlines Logo
10:30 am - 1:55 pmKIX-SEA
20h 25m1 stop
$563Asiana Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 10
Asiana Airlines Logo
12:10 am - 8:40 amSEA-KIX
15h 30m1 stop
Asiana Airlines Logo
9:00 am - 1:55 pmKIX-SEA
21h 55m1 stop
$564Asiana Airlines
Find Deal
Sun, Nov 2 - Sun, Nov 9
Korean Air Logo
11:00 am - 12:50 pmSEA-CTS
32h 50m1 stop
Korean Air Logo
4:50 pm - 9:00 amCTS-SEA
33h 10m1 stop
$624Korean Air
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Thu, Jan 22 - Sat, Feb 7
ANA Logo
3:45 pm - 10:15 amSEA-KIX
25h 30m1 stop
ANA Logo
3:45 pm - 1:20 pmKIX-SEA
14h 35m1 stop
$624ANA
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Wed, Feb 4 - Wed, Feb 11
ANA Logo
6:03 am - 6:15 pmSEA-KIX
19h 12m2 stops
ANA Logo
3:45 pm - 1:20 pmKIX-SEA
14h 35m1 stop
$628ANA
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Wed, Feb 4 - Wed, Feb 11
Japan Airlines Logo
12:10 pm - 3:40 pmSEA-NRT
10h 30mnonstop
Japan Airlines Logo
7:20 pm - 2:41 pmNRT-SEA
12h 21m1 stop
$636Japan Airlines
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Tue, Dec 2 - Fri, Dec 12
Multiple Airlines Logo
11:00 am - 11:25 pmSEA-HND
19h 25m1 stop
Multiple Airlines Logo
1:30 am - 9:00 amHND-SEA
24h 30m1 stop
$636Multiple Airlines
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Wed, Jan 14 - Tue, Feb 3
Japan Airlines Logo
12:30 pm - 10:10 pmSEA-CTS
16h 40m1 stop
Japan Airlines Logo
12:35 pm - 9:55 amCTS-SEA
14h 20m1 stop
$637Japan Airlines
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Tue, Jan 27 - Tue, Feb 3
Multiple Airlines Logo
11:10 pm - 12:45 pmSEA-NRT
20h 35m1 stop
Multiple Airlines Logo
2:45 pm - 1:30 pmNRT-SEA
15h 45m1 stop
$638Multiple Airlines
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Sat, Nov 29 - Sun, Dec 14
Korean Air Logo
11:00 am - 5:40 pmSEA-UKB
37h 40m1 stop
Korean Air Logo
11:10 am - 9:00 amUKB-SEA
14h 50m1 stop
$658Korean Air
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Mon, Nov 10 - Tue, Nov 18

Japan Airlines flights from State of Washington to Japan

Our best Japan Airlines deals on State of Washington to Japan flight tickets
Japan Airlines
Dec 2
SEA12:10 pmSeattle/Tacoma Intl
10h 30m
NRT3:40 pmTokyo Narita
Dec 12
NRT7:20 pmTokyo Narita
12h 21m
1 stop
SEA2:41 pmSeattle/Tacoma Intl
$636
Find similar
Japan Airlines
Jan 19
SEA12:30 pmSeattle/Tacoma Intl
10h 10m
NRT3:40 pmTokyo Narita
Jan 29
NRT7:20 pmTokyo Narita
12h 14m
1 stop
SEA2:34 pmSeattle/Tacoma Intl
$637
Find similar
Japan Airlines
Jan 13
SEA6:00 amSeattle/Tacoma Intl
19h 50m
1 stop
KIX6:50 pmOsaka Kansai Intl
Jan 20
KIX8:00 amOsaka Kansai Intl
18h 55m
1 stop
SEA9:55 amSeattle/Tacoma Intl
$638
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Air Canada flights from State of Washington to Japan

Our best Air Canada deals on State of Washington to Japan flight tickets
Air Canada
Oct 19
SEA10:00 amSeattle/Tacoma Intl
14h 25m
1 stop
KIX4:25 pmOsaka Kansai Intl
Oct 21
KIX6:05 pmOsaka Kansai Intl
20h 26m
1 stop
SEA10:31 pmSeattle/Tacoma Intl
$678
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Air Canada
Jan 16
PDX9:50 amPortland
13h 30m
1 stop
NRT4:20 pmTokyo Narita
Jan 31
NRT6:15 pmTokyo Narita
45h 51m
2 stops
PDX11:06 pmPortland
$689
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Air Canada
Dec 7
PDX9:50 amPortland
13h 30m
1 stop
NRT4:20 pmTokyo Narita
Dec 16
NRT6:15 pmTokyo Narita
13h 25m
1 stop
PDX2:40 pmPortland
$690
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momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Japan that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 16, 2025.
Use the filters below to find and compare flights from Washington to Japan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 11/3

12:10 am-6:05 pm

1 stop24h 55m

Osaka Kansai Intl

Mon 11/10

10:30 am-1:55 pm

1 stop20h 25m

$563

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 11/2

12:10 am-8:40 am

1 stop15h 30m

Osaka Kansai Intl

Sun 11/9

9:00 am-1:55 pm

1 stop21h 55m

$564

SeattleSapporo

SEA - CTS

SEACTS

Seattle/Tacoma Intl

Thu 1/22

11:00 am-12:50 pm

1 stop32h 50m

Sapporo Chitose

Sat 2/7

4:50 pm-9:00 am

1 stop33h 10m

$624

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Wed 2/4

3:45 pm-10:15 am

1 stop25h 30m

Osaka Kansai Intl

Wed 2/11

3:45 pm-1:20 pm

1 stop14h 35m

$624

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Wed 2/4

6:03 am-6:15 pm

2 stops19h 12m

Osaka Kansai Intl

Wed 2/11

3:45 pm-1:20 pm

1 stop14h 35m

$628

SeattleTokyo

SEA - NRT

SEANRT

Seattle/Tacoma Intl

Tue 12/2

12:10 pm-3:40 pm

Nonstop10h 30m

Tokyo Narita

Fri 12/12

7:20 pm-2:41 pm

1 stop12h 21m

$636

SeattleTokyo

SEA - HND

SEAHND

Seattle/Tacoma Intl

Wed 1/14

11:00 am-11:25 pm

1 stop19h 25m

Tokyo Haneda

Tue 2/3

1:30 am-9:00 am

1 stop24h 30m

$636

SeattleSapporo

SEA - CTS

SEACTS

Seattle/Tacoma Intl

Tue 1/27

12:30 pm-10:10 pm

1 stop16h 40m

Sapporo Chitose

Tue 2/3

12:35 pm-9:55 am

1 stop14h 20m

$637

SeattleTokyo

SEA - NRT

SEANRT

Seattle/Tacoma Intl

Sat 11/29

11:10 pm-12:45 pm

1 stop20h 35m

Tokyo Narita

Sun 12/14

2:45 pm-1:30 pm

1 stop15h 45m

$638

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Mon 11/10

11:00 am-5:40 pm

1 stop37h 40m

Kobe

Tue 11/18

11:10 am-9:00 am

1 stop14h 50m

$658

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Japan from

How to get the cheapest flight ticket from State of Washington to Japan

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Japan?

The month of September is, on average, the cheapest month to fly to Japan from State of Washington, with most prices found around $778. If you aren’t able to travel to Japan during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $813.

What is the cheapest day to depart on your flight to Japan?

On average, the least expensive day to fly to Japan from State of Washington is on a Monday. momondo users have found tickets for Monday departures for as low as $873. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from State of Washington to Japan on a Friday will generally be more expensive and average around $1,036. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Japan?

Flying to Japan from State of Washington in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $885 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to Japan, so prices are often more expensive at around $1,013 per ticket.

What is the cheapest Washington to Japan flight route?

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

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

You are more likely to see cheaper flights to Japan from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Japan for around $1,000 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Japan from State of Washington for as low as $860 on momondo.

What cabin class options are available on Washington to Japan flights?

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

Can stopping save me money on State of Washington to Japan flights?

You could potentially save up to 28% on your flight if you consider stops on a State of Washington to Japan flight.

Cheap State of Washington to Japan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Japan

Best Price Found

$411

Fastest flight time

10h 05m

Direct flights

Every day

Airports in Japan

2 airports
The best one-way flight to Japan from State of Washington in the past 72 hours is $411. The best round-trip flight deal from State of Washington to Japan found on momondo in the last 72 hours is $690.
The fastest flight from State of Washington to Japan takes 10h 05m
Direct flights go from State of Washington to Japan every day.
There are 2 airports near Japan: Tokyo Narita (NRT), Tokyo Haneda (HND)
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  • When did momondo last update prices for flights from Washington to Japan?

    Prices for flights from Washington to Japan are updated daily.

  • How many operators does momondo search for flights from Washington to Japan?

  • How old do you have to be to fly from Washington to Japan?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to Japan.

  • What documentation or ID do you need to fly to Japan?

    The travel and health documents you'll need for your trip to Japan may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Japan. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from State of Washington to Japan?

Best airlines flying from State of Washington to Japan

Compare and see reviews for airlines that fly from State of Washington to Japan with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $117Free CancellationRating
7.9
7,978 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $359Free CancellationRating
7.8
2,781 reviews
Search Hawaiian Airlines flights
Asiana AirlinesPriceFrom $550Free CancellationRating
8.2
486 reviews
Search Asiana Airlines flights
Air CanadaPriceFrom $581Free CancellationRating
7.1
10,307 reviews
Search Air Canada flights
ANAPriceFrom $665Free CancellationRating
8.4
986 reviews
Search ANA flights
Alaska AirlinesPriceFrom $670Free CancellationRating
8.0
11,103 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $681Free CancellationRating
7.4
8,982 reviews
Search United Airlines flights
Japan AirlinesPriceFrom $697Free CancellationRating
8.3
1,579 reviews
Search Japan Airlines flights
Korean AirPriceFrom $702Free CancellationRating
8.4
1,149 reviews
Search Korean Air flights
Philippine AirlinesPriceFrom $705Free CancellationRating
7.3
920 reviews
Search Philippine Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Japan?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington to Japan for you.

Can I find flights from Washington to Japan with flexible booking policies on momondo?

Yes. All flights to Japan from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington to Japan?

momondo helps you find the best flight between Washington and Japan by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Washington to Japan right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Japan from Washington. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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