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Kumamoto

$775+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KMJ
janv. 25 — févr. 11
dim. 1/25
dim. 2/1
1 adult, Economy
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Cheap flight deals from Seattle to Kumamoto

Best flights from Seattle to Kumamoto
Discover carefully curated flight deals from Seattle to Kumamoto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated décembre 26, 2025.

This Flightnetwork deal was found by Cheapflights users on 12/24. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 2/75:10 pmSEA - KMJ
2 stops34h 45mANA
sam. 2/1412:35 pmKMJ - SEA
1 stop17h 45mANA
Deal found 12/24$775
This Japan Airlines deal was found by Cheapflights users on 12/24. 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.
dim. 2/18:25 amSEA - KMJ
2 stops34h 35mJapan Airlines
mer. 2/411:55 amKMJ - SEA
2 stops15h 00mJapan Airlines
Deal found 12/24$825
This Flightnetwork deal was found by Cheapflights users on 12/24. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 2/710:05 amSEA - KMJ
2 stops30h 20mMultiple Airlines
sam. 2/1410:00 amKMJ - SEA
3 stops41h 25mMultiple Airlines
Deal found 12/24$1,007
This STARLUX Airlines deal was found by Cheapflights users on 12/25. 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.
dim. 2/111:45 pmSEA - KMJ
1 stop17h 50mSTARLUX Airlines
mer. 2/411:45 amKMJ - SEA
1 stop20h 20mSTARLUX Airlines
Deal found 12/25$1,838
This Japan Airlines deal was found by Cheapflights users on 12/23. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 1/1912:30 pmSEA - KMJ
1 stop27h 55mJapan Airlines
ven. 1/2310:00 amKMJ - SEA
1 stop16h 55mJapan Airlines
Deal found 12/23$984

Find 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 décembre 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$775
(Flightnetwork)

Popular in

December

Cheapest in

September

Average price

$1,675
Provider with most accurate pricing for Seattle/Tacoma Intl-Kumamoto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Kumamoto flights.
Search Deals
From Seattle/Tacoma Intl to Kumamoto
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($162 potential increase over avg. RT price).
Search Deals
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 December 2025
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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 décembre 26, 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

sam. 2/7

5:10 pm-8:55 pm

2 stops34h 45m

Kumamoto

sam. 2/14

12:35 pm-1:20 pm

1 stop17h 45m

$775

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

dim. 2/1

8:25 am-12:00 pm

2 stops34h 35m

Kumamoto

mer. 2/4

11:55 am-9:55 am

2 stops15h 00m

$825

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

lun. 1/19

12:30 pm-9:25 am

1 stop27h 55m

Kumamoto

ven. 1/23

10:00 am-9:55 am

1 stop16h 55m

$984

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

sam. 2/7

10:05 am-9:25 am

2 stops30h 20m

Kumamoto

sam. 2/14

10:00 am-10:25 am

3 stops41h 25m

$1,007

SeattleKumamoto

SEA - KMJ

SEAKMJ

Seattle/Tacoma Intl

dim. 2/1

11:45 pm-10:35 am

1 stop17h 50m

Kumamoto

mer. 2/4

11:45 am-3:05 pm

1 stop20h 20m

$1,838

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/24

  • 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 $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 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 34h 35m. Fly via ANA or Japan Airlines 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 $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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Alternative routes for Seattle to Kumamoto

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Portland to Kumamoto flights

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