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Kumamoto

$756+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KMJ
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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Find 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 October 22, 2025.

This ANA deal was found by Cheapflights users on 10/20. 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/215:30 amPDX - KMJ
2 stops22h 15mANA
Sat 10/258:35 pmKMJ - PDX
2 stops38h 01mANA
Deal found 10/20$756
This American Airlines deal was found by Cheapflights users on 10/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/215:22 amSEA - KMJ
2 stops21h 58mAmerican Airlines
Fri 10/2412:35 pmKMJ - SEA
2 stops25h 05mAmerican Airlines
Deal found 10/19$1,100
This Japan Airlines deal was found by Cheapflights users on 10/19. 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.
Tue 10/217:00 amPDX - KMJ
2 stops20h 20mJapan Airlines
Sat 10/2510:30 amKMJ - PDX
2 stops22h 24mJapan Airlines
Deal found 10/19$1,162
This Delta deal was found by Cheapflights users on 10/20. 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.
Thu 12/41:37 pmSEA - KMJ
2 stops58h 53mDelta
Thu 12/117:10 pmKMJ - SEA
1 stop30h 50mDelta
Deal found 10/20$1,238
This Delta deal was found by Cheapflights users on 10/21. 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 12/57:10 amSEA - KMJ
2 stops41h 20mDelta
Fri 12/127:10 pmKMJ - SEA
1 stop30h 50mDelta
Deal found 10/21$1,296
This STARLUX Airlines deal was found by Cheapflights users on 10/21. 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.
Fri 12/511:45 pmSEA - KMJ
1 stop17h 50mSTARLUX Airlines
Fri 12/1211:45 amKMJ - SEA
1 stop20h 20mSTARLUX Airlines
Deal found 10/21$1,372
This STARLUX Airlines deal was found by Cheapflights users on 10/20. 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.
Thu 12/411:45 pmSEA - KMJ
1 stop17h 50mSTARLUX Airlines
Thu 12/1111:45 amKMJ - SEA
1 stop20h 20mSTARLUX Airlines
Deal found 10/20$1,411
This ANA deal was found by Cheapflights users on 10/19. 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/214:30 pmSEA - KMJ
1 stop33h 55mANA
Fri 10/248:50 amKMJ - SEA
2 stops21h 35mANA
Deal found 10/19$1,460
This KAYAK deal was found by Cheapflights users on 10/20. 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 12/1411:45 pmSEA - KMJ
1 stop17h 50mSTARLUX Airlines
Fri 1/211:45 amKMJ - SEA
1 stop20h 20mSTARLUX Airlines
Deal found 10/20$2,266
This STARLUX Airlines deal was found by Cheapflights users on 10/19. 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.
Mon 10/201:15 amSEA - KMJ
1 stop17h 30mSTARLUX Airlines
Fri 10/2411:55 amKMJ - SEA
1 stop20h 15mSTARLUX Airlines
Deal found 10/19$4,646

Cheap flight deals from Washington to Kumamoto

Keep the following information in mind while searching for Washington to Kumamoto flight deals. Data was last updated October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,238
(Delta)

Popular in

December

Cheapest in

September

Average price

$835
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. 23% potential increase in price ($305 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($61 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 October 22, 2025.
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

Thu 12/4

1:37 pm-5:30 pm

2 stops58h 53m

Kumamoto

Thu 12/11

7:10 pm-9:00 am

1 stop30h 50m

$1,238

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

Fri 12/5

7:10 am-5:30 pm

2 stops41h 20m

Kumamoto

Fri 12/12

7:10 pm-9:00 am

1 stop30h 50m

$1,296

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

Fri 12/5

11:45 pm-10:35 am

1 stop17h 50m

Kumamoto

Fri 12/12

11:45 am-3:05 pm

1 stop20h 20m

$1,372

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

Thu 12/4

11:45 pm-10:35 am

1 stop17h 50m

Kumamoto

Thu 12/11

11:45 am-3:05 pm

1 stop20h 20m

$1,411

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

Sun 12/14

11:45 pm-10:35 am

1 stop17h 50m

Kumamoto

Fri 1/2

11:45 am-3:05 pm

1 stop20h 20m

$2,266

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

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 December is currently the most expensive (average of $1,012). 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?

    Delta and STARLUX Airlines can get you from State of Washington to Kumamoto in just under 17h 50m. Your travel time can differ by up to 41h 03m. 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 December is currently the most expensive (average of $1,012). 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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