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Kansai Intl

$471+ Cheap flights from Boston (BOS) 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KIX
Feb 18 — Feb 251
Wed 2/18
Wed 2/25
1 adult, Economy
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Cheap flight deals from Boston to Kansai Intl

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Kansai Intl (KIX). 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 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$869
(United Airlines)

One-way from

$471
(Flightnetwork)

Popular in

June

Cheapest in

February

Average price

$1,285
Provider with most accurate pricing for Boston Logan Intl-Osaka Kansai Intl flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Osaka Kansai Intl flights.
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From Boston Logan Intl to Osaka Kansai Intl
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One-way flight from Boston Logan Intl to Osaka Kansai Intl
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Highest demand for flights based on searches. 15% potential increase in price ($238 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($34 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 Boston to Kansai Intl

Cheapest flights from Boston to Kansai Intl
Explore the most affordable flight options available from Boston to Kansai Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 19, 2026.

This Air Canada deal was found by Cheapflights users on 1/17. 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.
Mon 1/196:15 am
BOS
-
KIX
2 stops23h 10m
Multiple Airlines
Thu 1/228:00 am
KIX
-
BOS
2 stops25h 42m
Multiple Airlines
Deal found 1/17$835
This United Airlines deal was found by Cheapflights users on 1/18. 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.
Mon 2/24:49 pm
BOS
-
KIX
2 stops33h 51m
United Airlines
Wed 2/186:35 pm
KIX
-
BOS
1 stop17h 12m
United Airlines
Deal found 1/18$869
This United Airlines deal was found by Cheapflights users on 1/17. 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 stop27h 23m
United Airlines
Deal found 1/17$879
This Gotogate deal was found by Cheapflights users on 1/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/193:40 pm
BOS
-
KIX
2 stops59h 15m
Multiple Airlines
Mon 2/168:25 pm
KIX
-
BOS
2 stops37h 17m
Multiple Airlines
Deal found 1/17$903
This Gotogate deal was found by Cheapflights users on 1/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/196:15 am
BOS
-
KIX
2 stops23h 10m
Multiple Airlines
Wed 1/218:25 pm
KIX
-
BOS
2 stops37h 17m
Multiple Airlines
Deal found 1/17$906
This Air Canada deal was found by Cheapflights users on 1/17. 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 1/17$929
This Air Canada deal was found by Cheapflights users on 1/17. 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 9/156:40 pm
BOS
-
KIX
2 stops32h 45m
Air Canada
Wed 11/113:45 pm
KIX
-
BOS
2 stops20h 52m
Air Canada
Deal found 1/17$936
This Air Canada deal was found by Cheapflights users on 1/18. 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.
Wed 3/45:30 am
BOS
-
KIX
2 stops22h 10m
Multiple Airlines
Wed 3/118:00 am
KIX
-
BOS
2 stops27h 37m
Multiple Airlines
Deal found 1/18$937
This Air Canada deal was found by Cheapflights users on 1/18. 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 10/106:40 pm
BOS
-
KIX
2 stops32h 45m
Air Canada
Fri 10/236:05 pm
KIX
-
BOS
2 stops28h 45m
Air Canada
Deal found 1/18$938

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston 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 19, 2026.
Use the filters below to find and compare flights from Boston to Osaka Kansai Intl Airport that are best for you.

Fly from

Boston

Fly to

Kansai Intl

Route

Depart

Return

Price

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 2/2

1:50 pm-4:40 pm

1 stop36h 50m

Osaka Kansai Intl

Wed 2/18

6:35 pm-9:47 pm

1 stop17h 12m

$869

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-7:58 am

1 stop27h 23m

$879

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

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Fri 1/30

6:15 am-10:20 pm

2 stops26h 05m

Osaka Kansai Intl

Mon 2/2

10:40 am-7:42 pm

2 stops23h 02m

$995

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Thu 2/19

6:00 am-4:40 pm

1 stop20h 40m

Osaka Kansai Intl

Wed 2/25

9:10 pm-7:08 pm

2 stops35h 58m

$997

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 3/4

6:40 pm-12:35 pm

2 stops27h 55m

$471

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 2/17

3:30 pm-8:45 am

3 stops51h 15m

$521

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 4/19

4:25 pm-11:50 am

1 stop30h 25m

$565

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 4/26

4:25 pm-7:30 pm

2 stops38h 05m

$587

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 4/19

6:40 pm-4:25 pm

2 stops32h 45m

$613

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/18

Showing 1-10 of 11 results
1
2

Compare providers for flights from Boston to Kansai Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Kansai Intl in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Osaka Kansai Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Osaka Kansai Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Osaka Kansai Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Osaka Kansai Intl Airport flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Osaka Kansai Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to Kansai Intl

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

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

Currently, September is the cheapest month in which you can book a flight from Boston to Osaka Kansai Intl Airport (average of $787). Flying from Boston 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.

Reviews of airlines servicing Kansai Intl

Get insights into the airlines that provide service to Kansai Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kansai Intl. Reviews last updated January 19, 2026.
Get a feel of what it's like to fly with ANA, Japan Airlines, and Cathay Pacific from Boston to Osaka Kansai Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.4
Very good
1,077 reviews

Comfort

8.2

Overall

8.4

Crew

8.7

Food

7.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!
ANA
8.4
Very good
1,077 reviews
ANA
8.4
Very good
1,077 reviews

Comfort

8.2

Overall

8.4

Crew

8.7

Food

7.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!
Japan Airlines
8.3
Very good
1,687 reviews
ANA
8.4
Very good
1,077 reviews

Comfort

8.2

Overall

8.4

Crew

8.7

Food

7.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!
Cathay Pacific
7.6
Good
1,139 reviews
ANA
8.4
Very good
1,077 reviews

Comfort

8.2

Overall

8.4

Crew

8.7

Food

7.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!
United Airlines
7.4
Good
9,177 reviews
ANA
8.4
Very good
1,077 reviews

Comfort

8.2

Overall

8.4

Crew

8.7

Food

7.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!
Air Canada
7.1
Good
10,635 reviews
ANA
8.4
Very good
1,077 reviews

Comfort

8.2

Overall

8.4

Crew

8.7

Food

7.7

Boarding

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Lindsey,Jan 2026

CGK - HND

All of the flight attendants were very nice & attentive. The bathrooms were kept very clean. We have no complaints!

Related info for your journey

Find useful and relevant information for your journey from Boston to Kansai Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boston to Osaka Kansai Intl?

    If you book a flight to Osaka Kansai Intl from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston. There are 0 flights from Logan Intl to Osaka Kansai Intl per day from 5 different airlines.

  • How long is the flight from Boston to Osaka Kansai Intl Airport?

    Departing from Boston to Osaka Kansai Intl Airport will take you 36h 50m. The distance between Boston and Osaka Kansai Intl Airport is about 6872 mi.

  • What are the cheapest airlines flying from Boston to Osaka Kansai Intl Airport round-trip?

    Flying on Air Canada is currently your cheapest option to Osaka Kansai Intl Airport, with prices starting at $787. Additional round-trip tickets that might be worth considering are offered by Cathay Pacific and ANA, with the lowest prices starting at $909 and $989, respectively. Air Canada is currently priced 39% below the average price you’ll pay for this route.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Boston to Osaka Kansai Intl Airport (average of $787). Flying from Boston 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 Boston to Kansai Intl

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Osaka Itami flights
Boston to Kobe flights
Hartford to Osaka Itami flights
Hartford to Kansai Intl flights

Top 5 airlines flying from Boston to Kansai Intl

Discover the top 5 airlines that operate flights from Boston 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 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$787Average$1,115FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$909Average$1,294FlexibilityNo cancel feeOn-time72%
ANACheapest$989Average$1,243FlexibilityNo 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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