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Kumamoto

$873+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KMJ
Jan 6 — Jan 131
Tue 1/6
Tue 1/13
1 adult, Economy
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Cheap flight deals from Washington to Kumamoto

Best flights from Washington to Kumamoto
Discover carefully curated flight deals from Washington to Kumamoto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 7, 2025.

This Japan Airlines deal was found by Cheapflights users on 12/5. 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.
Wed 2/257:00 amPDX - KMJ
2 stops32h 25mJapan Airlines
Sun 3/15:40 pmKMJ - PDX
2 stops40h 10mJapan Airlines
Deal found 12/5$873
This Delta deal was found by Cheapflights users on 12/7. 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.
Wed 1/217:15 amSEA - KMJ
2 stops41h 15mDelta
Wed 1/287:10 pmKMJ - SEA
1 stop30h 50mDelta
Deal found 12/7$1,162
This STARLUX Airlines deal was found by Cheapflights users on 12/6. 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.
Sat 1/1711:45 pmSEA - KMJ
1 stop17h 50mSTARLUX Airlines
Wed 1/2111:45 amKMJ - SEA
1 stop20h 20mSTARLUX Airlines
Deal found 12/6$1,608
This Japan Airlines deal was found by Cheapflights users on 12/5. 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.
Sat 1/176:00 amSEA - KMJ
2 stops21h 55mJapan Airlines
Wed 1/2110:00 amKMJ - SEA
1 stop16h 55mJapan Airlines
Deal found 12/5$978
This Delta deal was found by Cheapflights users on 12/5. 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.
Tue 1/207:15 amSEA - KMJ
2 stops41h 15mDelta
Tue 1/277:10 pmKMJ - SEA
2 stops38h 44mDelta
Deal found 12/5$1,171
This STARLUX Airlines deal was found by Cheapflights users on 12/5. 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.
Tue 1/2011:45 pmSEA - KMJ
1 stop17h 50mSTARLUX Airlines
Tue 1/2711:45 amKMJ - SEA
1 stop20h 20mSTARLUX Airlines
Deal found 12/5$1,914

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 December 7, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$744
(Japan Airlines)

Popular in

December

Cheapest in

September

Average price

$1,675
Provider with most accurate pricing for Seattle/Tacoma Intl-Fukuoka flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Fukuoka flights.
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From Washington to Kumamoto
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($172 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($64 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 7, 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

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Wed 2/25

7:00 am-8:25 am

2 stops32h 25m

Kumamoto

Sun 3/1

5:40 pm-4:50 pm

2 stops40h 10m

$873

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

Sat 1/17

6:00 am-8:55 pm

2 stops21h 55m

Kumamoto

Wed 1/21

10:00 am-9:55 am

1 stop16h 55m

$978

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

Wed 1/21

7:15 am-5:30 pm

2 stops41h 15m

Kumamoto

Wed 1/28

7:10 pm-9:00 am

1 stop30h 50m

$1,162

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

Tue 1/20

7:15 am-5:30 pm

2 stops41h 15m

Kumamoto

Tue 1/27

7:10 pm-4:54 pm

2 stops38h 44m

$1,171

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

Sat 1/17

11:45 pm-10:35 am

1 stop17h 50m

Kumamoto

Wed 1/21

11:45 am-3:05 pm

1 stop20h 20m

$1,608

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

Tue 1/20

11:45 pm-10:35 am

1 stop17h 50m

Kumamoto

Tue 1/27

11:45 am-3:05 pm

1 stop20h 20m

$1,914

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/5

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 May is currently the most expensive (average of $927). 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, 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 23h 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 May is currently the most expensive (average of $927). 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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