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Kumamoto

$2,144+ 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 2/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KMJ
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap flight deals from Boston to Kumamoto

Best flights from Boston to Kumamoto
Discover carefully curated flight deals from Boston to Kumamoto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 15, 2025.

This Qatar Airways deal was found by Cheapflights users on 12/12. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/18:40 pmBOS - KMJ
2 stops47h 20mQatar Airways
Thu 2/58:25 pmKMJ - BOS
2 stops31h 55mQatar Airways
Deal found 12/12$2,144
This Japan Airlines deal was found by Cheapflights users on 12/12. 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 2/112:15 pmBOS - KMJ
2 stops33h 05mJapan Airlines
Thu 2/510:00 amKMJ - BOS
1 stop21h 35mJapan Airlines
Deal found 12/12$3,183

Find 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 December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$2,144
(Qatar Airways)

Popular in

June

Cheapest in

November

Average price

$1,691
Provider with most accurate pricing for Boston Logan Intl-Fukuoka flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Fukuoka flights.
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From Boston Logan Intl to Kumamoto
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Highest demand for flights based on searches. 5% potential increase in price ($80 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($38 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 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 December 15, 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 2/1

8:40 pm-10:00 am

2 stops47h 20m

Kumamoto

Thu 2/5

8:25 pm-2:20 pm

2 stops31h 55m

$2,144

BostonKumamoto

BOS - KMJ

BOSKMJ

Boston Logan Intl

Sun 2/1

12:15 pm-11:20 am

2 stops33h 05m

Kumamoto

Thu 2/5

10:00 am-5:35 pm

1 stop21h 35m

$3,183

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/12

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.

Cheapflights Insights

Everything you need to know about your flight from Boston to Kumamoto

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

Currently, February is the cheapest month in which you can book a flight from Boston to Kumamoto (average of $908). Flying from Boston to Kumamoto in December is currently the most expensive (average of $1,580). 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 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 $3,183, Qatar Airways can have you in Kumamoto from Boston in 33h 05m. 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.

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

    Currently, February is the cheapest month in which you can book a flight from Boston to Kumamoto (average of $908). Flying from Boston to Kumamoto in December is currently the most expensive (average of $1,580). 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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