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Kansai Intl

$426+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KIX
Aug 31 — Sep 71
Mon 8/31
Mon 9/7
1 adult, Economy
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Cheap 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 August 1, 2026.

This Air Canada deal was found by Cheapflights users on 7/30. 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 9/193:35 pm
BOS
-
KIX
2 stops35h 50m
Air Canada
Wed 9/306:00 pm
KIX
-
BOS
1 stop30h 55m
Air Canada
Deal found 7/30$846
This Air Canada deal was found by Cheapflights users on 7/29. 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.
Thu 9/175:55 am
BOS
-
KIX
1 stop21h 30m
Air Canada
Wed 9/306:00 pm
KIX
-
BOS
1 stop30h 55m
Air Canada
Deal found 7/29$851
This Air Canada deal was found by Cheapflights users on 7/29. 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 9/165:50 am
BOS
-
KIX
2 stops21h 35m
Air Canada
Wed 9/236:00 pm
KIX
-
BOS
1 stop28h 55m
Air Canada
Deal found 7/29$853
This Air Canada deal was found by Cheapflights users on 7/30. 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.
Thu 9/175:55 am
BOS
-
KIX
1 stop21h 30m
Air Canada
Wed 9/236:00 pm
KIX
-
BOS
1 stop17h 40m
Air Canada
Deal found 7/30$854
This Air Canada deal was found by Cheapflights users on 7/28. 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 9/156:50 pm
BOS
-
KIX
2 stops32h 35m
Multiple Airlines
Wed 11/117:35 am
KIX
-
BOS
2 stops44h 43m
Multiple Airlines
Deal found 7/28$862

Find 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 August 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$846
(Air Canada)

One-way from

$426
(FlightHub)

Popular in

June

Cheapest in

January

Average price

$1,380
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
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($289 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($46 potential savings vs. average RT price).
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Average for round-trip flights in August 2026
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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 August 1, 2026.
Use the filters below to find and compare flights from Boston to Osaka Kansai Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sat 8/22

5:01 pm-2:50 pm

2 stops32h 49m

Osaka Kansai Intl

Tue 10/27

6:35 pm-7:56 am

1 stop26h 21m

$1,131

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 8/24

6:00 am-2:50 pm

1 stop19h 50m

Osaka Kansai Intl

Wed 10/28

6:35 pm-6:06 am

1 stop24h 31m

$1,131

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 11/17

8:25 pm-4:45 pm

2 stops30h 20m

Osaka Kansai Intl

Tue 12/1

6:35 pm-1:49 pm

2 stops33h 14m

$1,135

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Fri 9/18

8:00 am-2:50 pm

3 stops65h 50m

Osaka Kansai Intl

Wed 9/30

4:55 pm-11:59 pm

2 stops20h 04m

$1,152
Quickest round-trip

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 9/13

6:00 am-2:50 pm

1 stop19h 50m

Osaka Kansai Intl

Mon 9/21

4:55 pm-10:59 pm

1 stop19h 04m

$1,187

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sat 8/15

5:01 pm-2:50 pm

2 stops32h 49m

Osaka Kansai Intl

Sat 8/29

4:55 pm-11:59 pm

2 stops20h 04m

$1,206

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Fri 8/21

12:55 pm-10:40 pm

1 stop20h 45m

Osaka Kansai Intl

Fri 10/23

2:15 am-10:10 am

1 stop20h 55m

$1,234

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 1/24

12:30 am-5:40 pm

1 stop27h 10m

Osaka Kansai Intl

Fri 1/29

9:25 am-10:00 pm

1 stop26h 35m

$1,245

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Thu 9/10

6:00 am-2:50 pm

1 stop19h 50m

Osaka Kansai Intl

Thu 9/17

4:55 pm-6:02 am

1 stop26h 07m

$1,281

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sat 10/10

1:45 am-2:50 pm

2 stops48h 05m

Osaka Kansai Intl

Sun 10/18

4:15 pm-11:05 pm

2 stops43h 50m

$1,308

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 18 resultsSorted by cheapest first
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 August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars

*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 FlightHub the most. FlightHub 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, January is the cheapest month in which you can book a flight from Boston to Osaka Kansai Intl Airport (average of $1,021). Flying from Boston to Osaka Kansai Intl Airport in June is currently the most expensive (average of $1,917). 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 August 1, 2026.
Get a feel of what it's like to fly with ANA,Cathay Pacific, andUnited Airlines 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
8.3
Very good
1,289 reviews

Comfort

8.2

Boarding

8.5

Overall

8.3

Crew

8.7

Food

7.8

Entertainment

8.0

Reviews

1 / 20
4.0
Okay

PeggyLee,Jun 2026

BKK - NRT

It was unexpectedly below the expectation from the overall atmosphere of older plane, older seats, and most disappointment probably the meals. Will not be booking ANA again.
ANA
8.3
Very good
1,289 reviews
ANA
8.3
Very good
1,289 reviews

Comfort

8.2

Boarding

8.5

Overall

8.3

Crew

8.7

Food

7.8

Entertainment

8.0

Reviews

1 / 20
4.0
Okay

PeggyLee,Jun 2026

BKK - NRT

It was unexpectedly below the expectation from the overall atmosphere of older plane, older seats, and most disappointment probably the meals. Will not be booking ANA again.
Cathay Pacific
7.6
Good
1,436 reviews
ANA
8.3
Very good
1,289 reviews

Comfort

8.2

Boarding

8.5

Overall

8.3

Crew

8.7

Food

7.8

Entertainment

8.0

Reviews

1 / 20
4.0
Okay

PeggyLee,Jun 2026

BKK - NRT

It was unexpectedly below the expectation from the overall atmosphere of older plane, older seats, and most disappointment probably the meals. Will not be booking ANA again.
United Airlines
7.4
Good
10,061 reviews
ANA
8.3
Very good
1,289 reviews

Comfort

8.2

Boarding

8.5

Overall

8.3

Crew

8.7

Food

7.8

Entertainment

8.0

Reviews

1 / 20
4.0
Okay

PeggyLee,Jun 2026

BKK - NRT

It was unexpectedly below the expectation from the overall atmosphere of older plane, older seats, and most disappointment probably the meals. Will not be booking ANA again.
Air Canada
7.1
Good
11,419 reviews
ANA
8.3
Very good
1,289 reviews

Comfort

8.2

Boarding

8.5

Overall

8.3

Crew

8.7

Food

7.8

Entertainment

8.0

Reviews

1 / 20
4.0
Okay

PeggyLee,Jun 2026

BKK - NRT

It was unexpectedly below the expectation from the overall atmosphere of older plane, older seats, and most disappointment probably the meals. Will not be booking ANA again.

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 4 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 32h 49m. 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 United Airlines, with the lowest prices starting at $833 and $920, respectively. Air Canada is currently priced 44% 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, January is the cheapest month in which you can book a flight from Boston to Osaka Kansai Intl Airport (average of $1,021). Flying from Boston to Osaka Kansai Intl Airport in June is currently the most expensive (average of $1,917). 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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Top 4 airlines flying from Boston to Kansai Intl

Discover the top 4 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 August 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$787Average$1,279FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$833Average$1,279FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$920Average$1,460FlexibilityNo cancel feeOn-time69%
ANACheapest$945Average$1,450FlexibilityNo cancel feeOn-time80%

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