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Kansai Intl

$469+ Cheap flights from Massachusetts to Kansai Intl (KIX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KIX
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap flight deals from Massachusetts to Kansai Intl

Cheapest flights from Massachusetts to Kansai Intl
Explore the most affordable flight options available from Massachusetts to Kansai Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:40 pm
BOS
-
KIX
2 stops29h 05m
Hainan Airlines
Sat 5/162:20 pm
KIX
-
BOS
1 stop39h 20m
Hainan Airlines
Deal found 1/25$848
This FlightHub deal was found by Cheapflights users on 1/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:00 am
BOS
-
KIX
1 stop20h 40m
ANA
Tue 2/247:05 am
KIX
-
BOS
2 stops19h 41m
ANA
Deal found 1/26$869
This United Airlines deal was found by Cheapflights users on 1/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/147:19 pm
BOS
-
KIX
2 stops31h 21m
United Airlines
Fri 2/276:35 pm
KIX
-
BOS
1 stop17h 12m
United Airlines
Deal found 1/26$873
This United Airlines deal was found by Cheapflights users on 1/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:00 am
BOS
-
KIX
1 stop20h 40m
United Airlines
Tue 2/246:35 pm
KIX
-
BOS
1 stop17h 12m
United Airlines
Deal found 1/26$879
This Air Canada deal was found by Cheapflights users on 1/26. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/106:15 am
BOS
-
KIX
2 stops26h 05m
Multiple Airlines
Tue 2/173:00 pm
KIX
-
BOS
2 stops21h 37m
Multiple Airlines
Deal found 1/26$889
This Air Canada deal was found by Cheapflights users on 1/26. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/276:15 am
BOS
-
KIX
2 stops26h 05m
Multiple Airlines
Tue 2/38:00 am
KIX
-
BOS
2 stops25h 42m
Multiple Airlines
Deal found 1/26$900
This Air Canada deal was found by Cheapflights users on 1/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:50 pm
BOS
-
KIX
2 stops32h 35m
Air Canada
Thu 10/16:05 pm
KIX
-
BOS
2 stops28h 45m
Air Canada
Deal found 1/27$918
This Air Canada deal was found by Cheapflights users on 1/24. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2810:40 am
BOS
-
KIX
2 stops40h 45m
Air Canada
Tue 5/56:00 pm
KIX
-
BOS
2 stops28h 45m
Air Canada
Deal found 1/24$926
This Air Canada deal was found by Cheapflights users on 1/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:40 pm
BOS
-
KIX
2 stops32h 45m
Air Canada
Fri 10/166:05 pm
KIX
-
BOS
2 stops28h 45m
Air Canada
Deal found 1/25$927
This Air Canada deal was found by Cheapflights users on 1/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/195:30 am
BOS
-
KIX
2 stops21h 55m
Multiple Airlines
Wed 4/297:40 am
KIX
-
BOS
2 stops26h 47m
Multiple Airlines
Deal found 1/25$932
This FlightHub deal was found by Cheapflights users on 1/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:29 pm
BDL
-
KIX
2 stops29h 31m
Japan Airlines
Wed 5/66:45 am
KIX
-
BDL
2 stops21h 41m
Japan Airlines
Deal found 1/26$1,098
This United Airlines deal was found by Cheapflights users on 1/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:00 am
BDL
-
KIX
3 stops24h 50m
United Airlines
Wed 5/64:55 pm
KIX
-
BDL
2 stops19h 50m
United Airlines
Deal found 1/26$1,127

Find flight deals from Massachusetts to Kansai Intl

Keep the following information in mind while searching for Massachusetts to Kansai Intl flight deals. Data was last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$848
(Kiwi.com)

One-way from

$469
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,287
Provider with most accurate pricing for Boston Logan Intl-Osaka (OSA) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Osaka (OSA) flights.
Search Deals
From Massachusetts to Osaka Kansai Intl
Search Deals
One-way flight from Massachusetts to Osaka Kansai Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($110 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Massachusetts to Kansai Intl 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 27, 2026.
Use the filters below to find and compare flights from Massachusetts to Osaka Kansai Intl Airport that are best for you.

Fly from

Massachusetts

Fly to

Kansai Intl

Route

Depart

Return

Price

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sat 2/14

7:19 pm-4:40 pm

2 stops31h 21m

Osaka Kansai Intl

Fri 2/27

6:35 pm-9:47 pm

1 stop17h 12m

$873

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 2/17

6:00 am-4:40 pm

1 stop20h 40m

Osaka Kansai Intl

Tue 2/24

6:35 pm-9:47 pm

1 stop17h 12m

$879

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 3/1

6:40 pm-5:40 pm

2 stops33h 00m

Osaka Kansai Intl

Sat 3/14

7:25 pm-9:32 am

2 stops27h 07m

$960

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Thu 2/19

6:00 am-4:40 pm

1 stop20h 40m

Osaka Kansai Intl

Thu 2/26

6:35 pm-11:57 pm

2 stops19h 22m

$979

HartfordOsaka

BDL - KIX

BDLKIX

Hartford Bradley Intl

Tue 4/28

7:29 pm-2:00 pm

2 stops29h 31m

Osaka Kansai Intl

Wed 5/6

6:45 am-3:26 pm

2 stops21h 41m

$1,098

HartfordOsaka

BDL - KIX

BDLKIX

Hartford Bradley Intl

Tue 4/28

6:00 am-7:50 pm

3 stops24h 50m

Osaka Kansai Intl

Wed 5/6

4:55 pm-11:45 pm

2 stops19h 50m

$1,127

HartfordOsaka

BDL - KIX

BDLKIX

Hartford Bradley Intl

Fri 5/1

7:29 pm-8:35 am

2 stops24h 06m

Osaka Kansai Intl

Sat 6/6

6:40 am-10:20 pm

2 stops28h 40m

$1,215

HartfordOsaka

BDL - KIX

BDLKIX

Hartford Bradley Intl

Fri 5/1

7:23 pm-8:35 am

3 stops24h 12m

Osaka Kansai Intl

Sat 6/6

5:55 pm-10:24 am

2 stops29h 29m

$1,408

HartfordOsaka

BDL - KIX

BDLKIX

Hartford Bradley Intl

Wed 3/11

6:00 am-4:40 pm

2 stops21h 40m

Osaka Kansai Intl

Wed 3/18

6:35 pm-10:53 am

2 stops29h 18m

$1,523

HartfordOsaka

BDL - KIX

BDLKIX

Hartford Bradley Intl

Thu 3/12

6:00 am-4:40 pm

2 stops21h 40m

Osaka Kansai Intl

Thu 3/19

6:35 pm-10:53 am

2 stops29h 18m

$1,573

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 22 results
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Best time to book a flight from Massachusetts to Kansai Intl

Have a flexible travel schedule? Discover the best time to fly to Kansai Intl from Massachusetts 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 Massachusetts to Osaka Kansai Intl Airport

What is the cheapest month to book a flight from Massachusetts to Osaka Kansai Intl Airport?

Currently, September is the cheapest month in which you can book a flight from Massachusetts to Osaka Kansai Intl Airport (average of $787). Flying from Massachusetts to Osaka Kansai Intl Airport in June is currently the most expensive (average of $1,208). 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 Massachusetts to Kansai Intl. 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 Massachusetts to Osaka Kansai Intl Airport?

    Airlines like United Airlines and Japan Airlines fly from Massachusetts to Osaka Kansai Intl Airport in about 29h 31m. The time it takes to get you to your destination can typically vary by up to 1h 50m. Massachusetts and Osaka Kansai Intl Airport are separated by a distance of 6867 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Massachusetts to Osaka Kansai Intl Airport?

    Most travelers choose Boston Logan Intl - Osaka Kansai Intl, Hartford Bradley Intl - Osaka Kansai Intl or Worcester - Osaka Kansai Intl when deciding on the best route from Massachusetts to Osaka Kansai Intl Airport.

  • Can I find deals for flights from Massachusetts to Kansai Intl that include hotel bookings?

    Yes. In addition to deals on Massachusetts to Kansai Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Massachusetts to Kansai Intl?

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

  • Can I find deals for business class flights from Massachusetts to Kansai Intl?

    Yes. Cheapflights offers flight deals from Massachusetts to Kansai Intl 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 Massachusetts to Osaka Kansai Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from Massachusetts to Osaka Kansai Intl Airport (average of $787). Flying from Massachusetts to Osaka Kansai Intl Airport in June is currently the most expensive (average of $1,208). 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

Traveling to a place near Osaka Kansai Intl Airport?

Book flights to Osaka Kansai Intl Airport if you plan to visit one of these locations
Nara
Izumisano
Himeji

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Alternative routes for Massachusetts to Kansai Intl

See prices for flight routes from nearby airports that may be better suited for you.
San Francisco to Kansai Intl flights
Los Angeles to Kansai Intl flights
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O'Hare Intl to Kobe flights
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O'Hare Intl to Osaka Itami flights
Sky Harbor Intl to Kansai Intl flights
Portland to Kansai Intl flights
Dallas/Fort Worth to Kobe flights
LaGuardia to Osaka Itami flights
Sky Harbor Intl to Osaka Itami flights
Reagan-National to Kansai Intl flights
Portland to Osaka Itami flights
Love Field to Kansai Intl flights
Boston to Osaka Itami flights
George Bush Intcntl to Kansai Intl flights
Las Vegas to Osaka Itami flights
San Diego to Kansai Intl flights
Baltimore to Kansai Intl flights
Reagan-National to Osaka Itami flights

Top 5 airlines flying from Massachusetts to Kansai Intl

Discover the top 5 airlines that operate flights from Massachusetts to Kansai Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$787Average$1,115FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$909Average$1,294FlexibilityNo cancel feeOn-time72%
ANACheapest$979Average$1,283FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$1,088Average$1,519FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$1,239Average$1,290FlexibilityNo cancel feeOn-time79%

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