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Kumamoto

$1,123+ Cheap flights from Boston (BOS) 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 2/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KMJ
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
1 adult, Economy
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Cheap flight deals from Boston to Kumamoto

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) 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 September 14, 2025.

Round-trip from

$1,123
(Delta)

Popular in

December

Cheapest in

August

Average price

$1,339
From Boston Logan Intl to Kumamoto
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Highest demand for flights based on searches. 11% potential increase in price ($172 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Boston to Kumamoto

Cheapest flights from Boston to Kumamoto
Explore the most affordable flight options available from Boston to Kumamoto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2025.

This FlightHub deal was found by Cheapflights users on 9/13. 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 12/146:00 amBOS - KMJ
2 stops36h 25mANA
Sun 1/48:35 pmKMJ - BOS
2 stops31h 45mANA
Deal found 9/13$2,188
This Ovago deal was found by Cheapflights users on 9/13. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1412:05 pmBOS - KMJ
1 stop31h 20mMultiple Airlines
Sun 1/49:20 amKMJ - BOS
2 stops27h 01mMultiple Airlines
Deal found 9/13$2,787
This FlightHub deal was found by Cheapflights users on 9/13. 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 12/1412:05 pmBOS - KMJ
1 stop33h 55mJapan Airlines
Sun 1/45:40 pmKMJ - BOS
1 stop37h 55mJapan Airlines
Deal found 9/13$2,929

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston 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 September 14, 2025.
Use the filters below to find and compare flights from Boston to Kumamoto that are best for you.

Fly from

Boston

Fly to

Kumamoto

Route

Depart

Return

Price

BostonKumamoto

BOS - KMJ

BOSKMJ

Boston Logan Intl

Sun 2/8

5:30 am-5:30 pm

2 stops46h 00m

Kumamoto

Thu 2/12

7:10 pm-6:32 am

2 stops49h 22m

$1,123

BostonKumamoto

BOS - KMJ

BOSKMJ

Boston Logan Intl

Sun 2/8

12:45 pm-11:55 am

2 stops33h 10m

Kumamoto

Thu 2/12

2:45 pm-9:46 pm

2 stops21h 01m

$1,142

BostonKumamoto

BOS - KMJ

BOSKMJ

Boston Logan Intl

Sun 12/14

6:00 am-8:25 am

2 stops36h 25m

Kumamoto

Sun 1/4

8:35 pm-2:20 pm

2 stops31h 45m

$2,188

BostonKumamoto

BOS - KMJ

BOSKMJ

Boston Logan Intl

Sun 12/14

12:05 pm-9:25 am

1 stop31h 20m

Kumamoto

Sun 1/4

9:20 am-10:21 pm

2 stops27h 01m

$2,787

BostonKumamoto

BOS - KMJ

BOSKMJ

Boston Logan Intl

Sun 12/14

12:05 pm-12:00 pm

1 stop33h 55m

Kumamoto

Sun 1/4

5:40 pm-5:35 pm

1 stop37h 55m

$2,929

BostonKumamoto

BOS - KMJ

BOSKMJ

Boston Logan Intl

Sun 2/8

11:00 am-5:30 pm

1 stop40h 30m

Kumamoto

Thu 2/12

7:10 pm-8:40 am

1 stop27h 30m

$10,822

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Best time to book a flight from Boston to Kumamoto

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

Related info for your journey

Find useful and relevant information for your journey from Boston 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 Boston to Kumamoto?

    For as low as $1,142, Delta can have you in Kumamoto from Boston in 33h 10m. Boston and Kumamoto are separated by a distance of 7054 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston 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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