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Kumamoto

$986+ Cheap flights from Portland (PDX) 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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — KMJ
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Cheap flight deals from Portland to Kumamoto

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) 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 January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$885
(Gotogate)

Popular in

November

Cheapest in

September

Average price

$704
Provider with most accurate pricing for Portland-Fukuoka flight deals.
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Provider most trusted by Cheapflights users for Portland-Fukuoka flights.
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From Portland to Kumamoto
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Highest demand for flights based on searches. 11% potential increase in price ($125 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Portland to Kumamoto

Cheapest flights from Portland to Kumamoto
Explore the most affordable flight options available from Portland to Kumamoto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 8, 2026.

This Japan Airlines deal was found by Cheapflights users on 1/6. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/117:20 amPDX - KMJ
2 stops33h 05mJapan Airlines
Thu 1/1512:50 pmKMJ - PDX
2 stops21h 00mJapan Airlines
Deal found 1/6$986
This STARLUX Airlines deal was found by Cheapflights users on 1/8. 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.
Sun 2/221:36 pmPDX - KMJ
2 stops27h 59mSTARLUX Airlines
Sun 3/111:45 amKMJ - PDX
2 stops23h 20mSTARLUX Airlines
Deal found 1/8$1,731

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland 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 January 8, 2026.
Use the filters below to find and compare flights from Portland to Kumamoto that are best for you.

Fly from

Portland

Fly to

Kumamoto

Route

Depart

Return

Price

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Sun 1/11

7:20 am-9:25 am

2 stops33h 05m

Kumamoto

Thu 1/15

12:50 pm-4:50 pm

2 stops21h 00m

$986

PortlandKumamoto

PDX - KMJ

PDXKMJ

Portland

Sun 2/22

1:36 pm-10:35 am

2 stops27h 59m

Kumamoto

Sun 3/1

11:45 am-6:05 pm

2 stops23h 20m

$1,731

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/5

Best time to book a flight from Portland to Kumamoto

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

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

Currently, July is the cheapest month in which you can book a flight from Portland to Kumamoto (average of $392). Flying from Portland to Kumamoto in March is currently the most expensive (average of $1,259). 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 Portland 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 Portland to Kumamoto?

    Japan Airlines and STARLUX Airlines can get you from Portland to Kumamoto in just under 27h 59m. Your travel time can differ by up to 5h 06m. There are 5337 mi between Portland and Kumamoto. 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 Portland to Kumamoto that include hotel bookings?

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

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

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

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

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

    Currently, July is the cheapest month in which you can book a flight from Portland to Kumamoto (average of $392). Flying from Portland to Kumamoto in March is currently the most expensive (average of $1,259). 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.

See more FAQs

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Complete your trip to Kumamoto by adding a car rental and/or hotel reservation to your travel itinerary.
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