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Kumamoto

$639+ Cheap flights from Seattle (SEA) 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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KMJ
dic. 12 — dic. 191
vie. 12/12
vie. 12/19
1 adult, Economy
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Cheap flight deals from Seattle to Kumamoto

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Kumamoto (KMJ). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated noviembre 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$639
(oojo)

Popular in

December

Cheapest in

September

Average price

$952
Provider with most accurate pricing for Seattle/Tacoma Intl-Kumamoto flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Kumamoto flights.
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From Seattle/Tacoma Intl to Kumamoto
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Highest demand for flights based on searches. 17% potential increase in price ($200 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($65 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Seattle to Kumamoto

Cheapest flights from Seattle to Kumamoto
Explore the most affordable flight options available from Seattle to Kumamoto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 12, 2025.

This Japan Airlines deal was found by Cheapflights users on 11/10. 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.
dom. 11/3012:10 pmSEA - KMJ
1 stop28h 15mJapan Airlines
jue. 12/410:00 amKMJ - SEA
2 stops40h 03mJapan Airlines
Deal found 11/10$926
This American Airlines deal was found by Cheapflights users on 11/9. 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.
sáb. 11/2912:59 amSEA - KMJ
2 stops25h 46mAmerican Airlines
jue. 12/410:00 amKMJ - SEA
1 stop16h 50mAmerican Airlines
Deal found 11/9$1,123
This ANA deal was found by Cheapflights users on 11/11. 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.
dom. 11/307:00 amSEA - KMJ
2 stops20h 55mANA
jue. 12/412:30 pmKMJ - SEA
2 stops17h 50mANA
Deal found 11/11$1,263
This China Airlines deal was found by Cheapflights users on 11/11. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/2912:10 amSEA - KMJ
1 stop24h 20mChina Airlines
jue. 12/46:30 pmKMJ - SEA
1 stop16h 40mChina Airlines
Deal found 11/11$1,881
This KAYAK deal was found by Cheapflights users on 11/10. 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.
lun. 12/2912:10 pmSEA - KMJ
1 stop28h 50mJapan Airlines
dom. 1/47:15 pmKMJ - SEA
2 stops31h 40mJapan Airlines
Deal found 11/10$2,170
This Mytrip deal was found by Cheapflights users on 11/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/215:50 amSEA - KMJ
2 stops34h 35mMultiple Airlines
vie. 1/210:25 amKMJ - SEA
3 stops25h 51mMultiple Airlines
Deal found 11/9$2,415
This STARLUX Airlines deal was found by Cheapflights users on 11/9. 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.
jue. 12/2511:45 pmSEA - KMJ
1 stop17h 50mSTARLUX Airlines
jue. 1/111:45 amKMJ - SEA
1 stop20h 20mSTARLUX Airlines
Deal found 11/9$2,463
This KAYAK deal was found by Cheapflights users on 11/10. 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.
dom. 12/2812:10 pmSEA - KMJ
1 stop15h 45mJapan Airlines
dom. 1/47:15 pmKMJ - SEA
2 stops31h 40mJapan Airlines
Deal found 11/10$2,607

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle 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 noviembre 12, 2025.
Use the filters below to find and compare flights from Seattle to Kumamoto that are best for you.

Fly from

Seattle

Fly to

Kumamoto

Route

Depart

Return

Price

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

sáb. 1/24

11:43 am-8:55 pm

2 stops40h 12m

Kumamoto

jue. 2/19

11:55 am-9:55 am

2 stops15h 00m

$639

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

sáb. 1/24

3:45 pm-10:35 am

2 stops25h 50m

Kumamoto

jue. 2/19

7:35 am-1:20 pm

1 stop22h 45m

$645

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

dom. 11/30

12:10 pm-9:25 am

1 stop28h 15m

Kumamoto

jue. 12/4

10:00 am-9:03 am

2 stops40h 03m

$926

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

sáb. 11/29

12:59 am-7:45 pm

2 stops25h 46m

Kumamoto

jue. 12/4

10:00 am-9:50 am

1 stop16h 50m

$1,123

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

dom. 12/21

6:02 pm-7:45 pm

2 stops32h 43m

$1,201

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

dom. 12/21

11:30 am-5:30 pm

1 stop37h 00m

$1,957

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

sáb. 12/20

10:15 pm-5:30 pm

2 stops50h 15m

$1,962

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

vie. 12/19

11:30 am-5:30 pm

1 stop37h 00m

$2,007

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

jue. 12/18

12:59 am-7:45 pm

2 stops25h 46m

$5,044

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

  • Most accurate provider: When it comes to deals on Seattle-Kumamoto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Kumamoto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Kumamoto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Kumamoto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Kumamoto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Kumamoto

Have a flexible travel schedule? Discover the best time to fly to Kumamoto from Seattle 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 Seattle to Kumamoto

What is the cheapest month to book a flight from Seattle to Kumamoto?

Currently, September is the cheapest month in which you can book a flight from Seattle to Kumamoto (average of $634). Flying from Seattle to Kumamoto in May is currently the most expensive (average of $931). 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 Seattle to Kumamoto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Kumamoto?

    There are many flights that can get you from Seattle to Kumamoto in 25h 50m. Fly via Japan Airlines or ANA to get the fastest option. Airlines will cover a distance of 5276 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Kumamoto?

    Currently, September is the cheapest month in which you can book a flight from Seattle to Kumamoto (average of $634). Flying from Seattle to Kumamoto in May is currently the most expensive (average of $931). 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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