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Kumamoto

$985+ Cheap flights from Washington to Kumamoto (KMJ)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KMJ
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Washington to Kumamoto

Cheapest flights from Washington to Kumamoto
Explore the most affordable flight options available from Washington to Kumamoto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This Japan Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/2212:30 pm
SEA
-
KMJ
1 stop27h 55m
Japan Airlines
Thu 2/268:15 pm
KMJ
-
SEA
1 stop30h 40m
Japan Airlines
Deal found 1/28$985
This Japan Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/297:20 am
PDX
-
KMJ
2 stops33h 40m
Japan Airlines
Mon 2/25:40 pm
KMJ
-
PDX
2 stops40h 10m
Japan Airlines
Deal found 1/26$989
This Japan Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/18:25 am
SEA
-
KMJ
2 stops31h 00m
Japan Airlines
Wed 2/47:10 pm
KMJ
-
SEA
2 stops31h 45m
Japan Airlines
Deal found 1/26$1,091
This STARLUX Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/251:36 pm
PDX
-
KMJ
2 stops27h 59m
STARLUX Airlines
Wed 3/411:45 am
KMJ
-
PDX
2 stops23h 20m
STARLUX Airlines
Deal found 1/28$1,221
This KAYAK deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1011:45 pm
SEA
-
KMJ
1 stop17h 50m
STARLUX Airlines
Tue 2/2411:45 am
KMJ
-
SEA
1 stop20h 20m
STARLUX Airlines
Deal found 1/27$1,526
This KAYAK deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/227:30 am
PDX
-
KMJ
2 stops32h 55m
ANA
Wed 3/2512:35 pm
KMJ
-
PDX
2 stops22h 12m
ANA
Deal found 1/27$1,595
This KAYAK deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/219:30 pm
PDX
-
KMJ
2 stops21h 05m
STARLUX Airlines
Tue 3/2411:45 am
KMJ
-
PDX
2 stops25h 53m
STARLUX Airlines
Deal found 1/27$1,596
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/211:10 pm
PDX
-
KMJ
2 stops60h 20m
Delta
Thu 3/267:10 pm
KMJ
-
PDX
2 stops39h 48m
Delta
Deal found 1/27$1,613
This KAYAK deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/237:30 am
PDX
-
KMJ
2 stops35h 05m
ANA
Thu 3/268:10 am
KMJ
-
PDX
2 stops26h 37m
ANA
Deal found 1/27$1,720
This KAYAK deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/207:30 am
PDX
-
KMJ
2 stops35h 05m
ANA
Tue 3/248:10 am
KMJ
-
PDX
2 stops26h 37m
ANA
Deal found 1/27$1,805
This KAYAK deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/207:30 am
PDX
-
KMJ
2 stops36h 30m
ANA
Wed 3/257:35 am
KMJ
-
PDX
2 stops27h 12m
ANA
Deal found 1/27$1,988
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/206:15 am
PDX
-
KMJ
2 stops43h 15m
Delta
Thu 3/267:10 pm
KMJ
-
PDX
2 stops37h 33m
Delta
Deal found 1/27$2,052

Find flight deals from Washington to Kumamoto

Keep the following information in mind while searching for Washington to Kumamoto flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$985
(Japan Airlines)

Popular in

May

Cheapest in

September

Average price

$823
Provider with most accurate pricing for Seattle/Tacoma Intl-Fukuoka flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Fukuoka flights.
Search Deals
From Washington to Kumamoto
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($157 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Kumamoto 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, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Washington to Kumamoto that are best for you.

Fly from

Washington

Fly to

Kumamoto

Route

Depart

Return

Price

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

Sun 2/22

12:30 pm-9:25 am

1 stop27h 55m

Kumamoto

Thu 2/26

8:15 pm-9:55 am

1 stop30h 40m

$985

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Wed 2/25

1:36 pm-10:35 am

2 stops27h 59m

Kumamoto

Wed 3/4

11:45 am-6:05 pm

2 stops23h 20m

$1,221

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

Tue 2/10

11:45 pm-10:35 am

1 stop17h 50m

Kumamoto

Tue 2/24

11:45 am-3:05 pm

1 stop20h 20m

$1,526

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Sat 3/21

9:30 pm-10:35 am

2 stops21h 05m

Kumamoto

Tue 3/24

11:45 am-9:38 pm

2 stops25h 53m

$1,596

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Sat 3/21

1:10 pm-5:30 pm

2 stops60h 20m

Kumamoto

Thu 3/26

7:10 pm-6:58 pm

2 stops39h 48m

$1,613

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Sat 3/21

1:10 pm-5:30 pm

2 stops60h 20m

Kumamoto

Wed 3/25

7:10 pm-10:23 pm

2 stops43h 13m

$1,613

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Mon 3/23

7:30 am-8:25 am

2 stops32h 55m

Kumamoto

Wed 3/25

8:35 pm-2:59 pm

2 stops34h 24m

$1,720

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Mon 3/23

7:30 am-10:35 am

2 stops35h 05m

Kumamoto

Thu 3/26

8:10 am-6:47 pm

2 stops26h 37m

$1,720

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Fri 3/20

7:30 am-12:00 pm

2 stops36h 30m

Kumamoto

Wed 3/25

7:35 am-6:47 pm

2 stops27h 12m

$1,988

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Fri 3/20

6:15 am-5:30 pm

2 stops43h 15m

Kumamoto

Thu 3/26

7:10 pm-4:43 pm

2 stops37h 33m

$2,052

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 14 results
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Best time to book a flight from Washington to Kumamoto

Have a flexible travel schedule? Discover the best time to fly to Kumamoto from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Kumamoto

What is the cheapest month to book a flight from State of Washington to Kumamoto?

Currently, September is the cheapest month in which you can book a flight from State of Washington to Kumamoto (average of $634). Flying from State of Washington to Kumamoto in June is currently the most expensive (average of $859). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Washington to Kumamoto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Kumamoto from Washington?

    Kumamoto (KMJ), located 9.7 mi from the city center, is the airport you fly into when you book flights from Washington to Kumamoto.

  • How long is the flight from State of Washington to Kumamoto?

    Japan Airlines, STARLUX Airlines, and Delta can get you from State of Washington to Kumamoto in just under 27h 55m. Your travel time can differ by up to 32h 25m. Airlines will cover a distance of 5276 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Washington to Kumamoto that include hotel bookings?

    Yes. In addition to deals on Washington to Kumamoto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Kumamoto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Kumamoto.

  • Can I find deals for business class flights from Washington to Kumamoto?

    Yes. Cheapflights offers flight deals from Washington to Kumamoto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to Kumamoto?

    Currently, September is the cheapest month in which you can book a flight from State of Washington to Kumamoto (average of $634). Flying from State of Washington to Kumamoto in June is currently the most expensive (average of $859). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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