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Kumamoto

$403+ Cheap flights from Washington to Kumamoto (KMJ)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KMJ
Aug 31 — Sep 71
Sun 8/31
Sun 9/7
1 adult, Economy
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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 August 26, 2025.

Round-trip from

$716
(FlightHub)

One-way from

$403
(Asiana Airlines)

Popular in

December

Cheapest in

September

Average price

$872
From Washington to Kumamoto
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One-way flight from Washington to Kumamoto
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Highest demand for flights based on searches. 20% potential increase in price ($267 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($57 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 August 26, 2025.

This FlightHub deal was found by Cheapflights users on 8/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/217:30 amPDX - KMJ
2 stops21h 25mANA
Wed 10/2912:35 pmKMJ - PDX
2 stops22h 01mANA
Deal found 8/24$716
This FlightHub deal was found by Cheapflights users on 8/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/195:30 amPDX - KMJ
2 stops23h 25mANA
Wed 10/2912:35 pmKMJ - PDX
2 stops22h 01mANA
Deal found 8/24$736
This SmartFares deal was found by Cheapflights users on 8/24. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/209:30 pmPDX - KMJ
2 stops47h 30mMultiple Airlines
Thu 10/302:00 pmKMJ - PDX
2 stops22h 50mMultiple Airlines
Deal found 8/24$798
This Japan Airlines deal was found by Cheapflights users on 8/25. 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 10/191:30 pmSEA - KMJ
1 stop27h 50mJapan Airlines
Wed 10/229:55 amKMJ - SEA
2 stops21h 00mJapan Airlines
Deal found 8/25$834
This ANA deal was found by Cheapflights users on 8/23. 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.
Sun 10/194:30 pmSEA - KMJ
1 stop32h 10mANA
Wed 10/221:10 pmKMJ - SEA
1 stop17h 15mANA
Deal found 8/23$846
This FlightHub deal was found by Cheapflights users on 8/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/197:30 amPDX - KMJ
2 stops21h 25mANA
Thu 10/306:10 pmKMJ - PDX
2 stops16h 20mANA
Deal found 8/24$878
This FlightHub deal was found by Cheapflights users on 8/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2010:00 pmPDX - KMJ
2 stops20h 45mSTARLUX Airlines
Fri 10/3111:45 amKMJ - PDX
2 stops24h 52mSTARLUX Airlines
Deal found 8/24$966
This STARLUX Airlines deal was found by Cheapflights users on 8/25. 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 10/181:15 amSEA - KMJ
1 stop17h 30mSTARLUX Airlines
Wed 10/2211:55 amKMJ - SEA
1 stop20h 15mSTARLUX Airlines
Deal found 8/25$967
This Delta deal was found by Cheapflights users on 8/24. 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 10/1812:40 amPDX - KMJ
2 stops42h 25mDelta
Wed 10/297:10 pmKMJ - PDX
2 stops41h 41mDelta
Deal found 8/24$972
This Japan Airlines deal was found by Cheapflights users on 8/24. 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 10/57:00 amPDX - KMJ
2 stops20h 20mJapan Airlines
Tue 10/78:55 amKMJ - PDX
2 stops23h 59mJapan Airlines
Deal found 8/24$973
This STARLUX Airlines deal was found by Cheapflights users on 8/25. 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 10/1610:00 pmPDX - KMJ
2 stops20h 45mSTARLUX Airlines
Wed 10/2211:55 amKMJ - PDX
2 stops24h 33mSTARLUX Airlines
Deal found 8/25$1,006
This STARLUX Airlines deal was found by Cheapflights users on 8/25. 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 10/1710:00 pmPDX - KMJ
2 stops20h 45mSTARLUX Airlines
Wed 10/2211:55 amKMJ - PDX
2 stops24h 33mSTARLUX Airlines
Deal found 8/25$1,081

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 August 26, 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

Tue 10/21

7:30 am-8:55 pm

2 stops21h 25m

Kumamoto

Wed 10/29

12:35 pm-6:36 pm

2 stops22h 01m

$716

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Sun 10/19

5:30 am-8:55 pm

2 stops23h 25m

Kumamoto

Wed 10/29

12:35 pm-6:36 pm

2 stops22h 01m

$736

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Mon 10/20

5:30 am-7:45 pm

2 stops22h 15m

Kumamoto

Wed 10/29

12:35 pm-6:36 pm

2 stops22h 01m

$736

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Mon 10/20

9:30 pm-1:00 pm

2 stops47h 30m

Kumamoto

Thu 10/30

2:00 pm-8:50 pm

2 stops22h 50m

$798

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

Sun 10/19

1:30 pm-9:20 am

1 stop27h 50m

Kumamoto

Wed 10/22

9:55 am-2:55 pm

2 stops21h 00m

$834

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

Sun 10/19

4:30 pm-4:40 pm

1 stop32h 10m

Kumamoto

Wed 10/22

1:10 pm-2:25 pm

1 stop17h 15m

$846

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Sun 10/19

7:30 am-8:55 pm

2 stops21h 25m

Kumamoto

Thu 10/30

6:10 pm-6:30 pm

2 stops16h 20m

$878

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Tue 10/21

7:30 am-7:45 pm

2 stops20h 15m

Kumamoto

Thu 10/30

12:35 pm-6:30 pm

2 stops21h 55m

$878

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Tue 10/21

7:30 am-7:45 pm

2 stops20h 15m

Kumamoto

Fri 10/31

12:35 pm-6:30 pm

2 stops21h 55m

$878

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Sun 10/19

7:30 am-8:55 pm

2 stops21h 25m

Kumamoto

Fri 10/31

12:35 pm-6:30 pm

2 stops21h 55m

$878

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/25

Showing 1-10 of 19 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
No data available for this route at this time. Please check back soon.

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?

    ANA and Japan Airlines can get you from State of Washington to Kumamoto in just under 21h 25m. Your travel time can differ by up to 6h 25m. Airlines will cover a distance of 5337 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.

See more FAQs

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