HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Kumamoto

$1,542+ 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
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Kumamoto with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,542
(ANA)

Popular in

December

Cheapest in

August

Average price

$1,380
Provider with most accurate pricing for Boston Logan Intl-Fukuoka flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Fukuoka flights.
Search Deals
From Boston Logan Intl to Kumamoto
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($221 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find 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 October 29, 2025.

This ANA deal was found by Cheapflights users on 10/26. 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.
Sun 2/810:30 amBOS - KMJ
2 stops33h 40mANA
Thu 2/1210:50 amKMJ - BOS
2 stops22h 18mANA
Deal found 10/26$1,542
This Japan Airlines deal was found by Cheapflights users on 10/26. 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 2/812:15 pmBOS - KMJ
1 stop31h 10mJapan Airlines
Thu 2/1210:00 amKMJ - BOS
1 stop21h 35mJapan Airlines
Deal found 10/26$2,106

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 October 29, 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

10:30 am-10:10 am

2 stops33h 40m

Kumamoto

Thu 2/12

10:50 am-7:08 pm

2 stops22h 18m

$1,542

BostonKumamoto

BOS - KMJ

BOSKMJ

Boston Logan Intl

Sun 2/8

12:15 pm-9:25 am

1 stop31h 10m

Kumamoto

Thu 2/12

10:00 am-5:35 pm

1 stop21h 35m

$2,106

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

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 $911). Flying from Boston to Kumamoto in December is currently the most expensive (average of $1,309). 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 $2,106, ANA can have you in Kumamoto from Boston in 31h 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.

  • 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 $911). Flying from Boston to Kumamoto in December is currently the most expensive (average of $1,309). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Complete your trip

Complete your trip to Kumamoto by adding a car rental and/or hotel reservation to your travel itinerary.
Kumamoto car rentals
Kumamoto Airport car rentals
Saga Airport car rentals
Kagoshima Airport car rentals
Nagasaki Airport car rentals

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.