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Kansai Intl

$481+ 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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KIX
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 December 4, 2025.

This Gotogate deal was found by Cheapflights users on 12/1. 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 12/156:15 amBOS - KIX
2 stops24h 20mMultiple Airlines
Thu 12/1810:50 amKIX - BOS
2 stops22h 52mMultiple Airlines
Deal found 12/1$1,360
This Gotogate deal was found by Cheapflights users on 12/1. 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.
Fri 12/56:40 pmBOS - KIX
2 stops27h 55mMultiple Airlines
Sun 12/76:05 pmKIX - BOS
1 stop41h 55mMultiple Airlines
Deal found 12/1$1,372
This FlightHub deal was found by Cheapflights users on 12/3. 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.
Sun 12/286:40 pmBOS - KIX
2 stops27h 55mHainan Airlines
Tue 1/132:35 pmKIX - BOS
1 stop39h 45mHainan Airlines
Deal found 12/3$1,462
This Air Canada deal was found by Cheapflights users on 12/2. 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 12/316:15 amBOS - KIX
2 stops26h 05mMultiple Airlines
Wed 1/78:00 amKIX - BOS
2 stops28h 37mMultiple Airlines
Deal found 12/2$1,625
This Air Canada deal was found by Cheapflights users on 12/3. 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 12/111:00 pmBOS - KIX
2 stops40h 25mMultiple Airlines
Tue 12/233:00 pmKIX - BOS
2 stops21h 37mMultiple Airlines
Deal found 12/3$1,630
This Expedia deal was found by Cheapflights users on 12/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:15 amBOS - KIX
2 stops36h 10mMultiple Airlines
Sat 12/273:45 pmKIX - BOS
2 stops20h 52mMultiple Airlines
Deal found 12/3$1,638
This CheapOair deal was found by Cheapflights users on 12/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/283:40 pmBOS - KIX
2 stops34h 25mMultiple Airlines
Tue 1/139:20 amKIX - BOS
2 stops27h 05mMultiple Airlines
Deal found 12/3$1,733

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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$881
(Korean Air)

One-way from

$481
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,295
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. 14% potential increase in price ($212 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% 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 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 December 4, 2025.
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

Sun 1/18

11:00 am-8:45 pm

1 stop19h 45m

Osaka Kansai Intl

Wed 1/28

2:00 pm-8:40 am

1 stop32h 40m

$881

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 1/18

11:00 am-8:45 pm

1 stop19h 45m

Osaka Kansai Intl

Mon 1/26

2:00 pm-8:40 am

1 stop32h 40m

$881

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 1/20

11:00 am-5:00 pm

1 stop40h 00m

Osaka Kansai Intl

Wed 2/4

6:10 pm-8:40 am

1 stop28h 30m

$881

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 1/21

11:00 am-8:45 pm

1 stop19h 45m

Osaka Kansai Intl

Tue 2/3

2:00 pm-8:40 am

1 stop32h 40m

$881

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 1/19

6:00 am-8:45 pm

2 stops24h 45m

Osaka Kansai Intl

Thu 1/29

9:00 am-8:40 am

1 stop37h 40m

$887

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 1/19

6:00 am-8:45 pm

2 stops24h 45m

Osaka Kansai Intl

Thu 2/5

9:00 am-8:40 am

1 stop37h 40m

$887

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 1/20

5:50 am-8:45 pm

2 stops24h 55m

Osaka Kansai Intl

Thu 1/29

9:00 am-1:04 am

2 stops30h 04m

$892

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sat 1/24

6:35 pm-8:45 pm

2 stops36h 10m

Osaka Kansai Intl

Mon 2/2

2:00 pm-8:40 am

1 stop32h 40m

$898

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 1/19

5:35 am-12:50 pm

2 stops41h 15m

Osaka Kansai Intl

Wed 1/28

11:55 am-11:52 pm

2 stops25h 57m

$900

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 1/19

5:35 am-12:50 pm

2 stops41h 15m

Osaka Kansai Intl

Fri 1/30

11:55 am-6:53 am

2 stops32h 58m

$900

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 20 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Boston-Osaka Kansai Intl Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $1,209). 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.

What is the cheapest time of day to fly from BOS to KIX?

Find hourly flight availability from Boston to Kansai Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 4, 2025.

When flying from Boston to Osaka Kansai Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 44% versus a flight in the afternoon.

How much does it cost to fly round-trip from Boston to Osaka Kansai Intl Airport?

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 December 4, 2025.
Get a feel of what it's like to fly with ANA, Cathay Pacific, and United 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
8.4
Very good
1,017 reviews

Comfort

8.2

Overall

8.4

Boarding

8.6

Crew

8.7

Food

7.7

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Mario,Nov 2025

HND - BKK

Option to use Bluetooth headphones when connecting to in flight entertainment system. I want to use my own headsets with noise cancelling support
ANA
8.4
Very good
1,017 reviews
ANA
8.4
Very good
1,017 reviews

Comfort

8.2

Overall

8.4

Boarding

8.6

Crew

8.7

Food

7.7

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Mario,Nov 2025

HND - BKK

Option to use Bluetooth headphones when connecting to in flight entertainment system. I want to use my own headsets with noise cancelling support
Cathay Pacific
7.6
Good
1,084 reviews
ANA
8.4
Very good
1,017 reviews

Comfort

8.2

Overall

8.4

Boarding

8.6

Crew

8.7

Food

7.7

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Mario,Nov 2025

HND - BKK

Option to use Bluetooth headphones when connecting to in flight entertainment system. I want to use my own headsets with noise cancelling support
United Airlines
7.4
Good
9,066 reviews
ANA
8.4
Very good
1,017 reviews

Comfort

8.2

Overall

8.4

Boarding

8.6

Crew

8.7

Food

7.7

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Mario,Nov 2025

HND - BKK

Option to use Bluetooth headphones when connecting to in flight entertainment system. I want to use my own headsets with noise cancelling support
Air Canada
7.1
Good
10,500 reviews
ANA
8.4
Very good
1,017 reviews

Comfort

8.2

Overall

8.4

Boarding

8.6

Crew

8.7

Food

7.7

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Mario,Nov 2025

HND - BKK

Option to use Bluetooth headphones when connecting to in flight entertainment system. I want to use my own headsets with noise cancelling support

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 19h 45m. 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 $979, respectively. Air Canada is currently priced 37% 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 $1,209). 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
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Hartford to Kansai Intl flights

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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$787Average$1,101FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$909Average$1,299FlexibilityNo cancel feeOn-time72%
ANACheapest$979Average$1,240FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$1,056Average$1,443FlexibilityNo cancel feeOn-time69%

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