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Kansai Intl

$505+ 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KIX
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$937
(SmartFares)

One-way from

$505
(Kiwi.com)

Popular in

April

Cheapest in

September

Average price

$938
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. 13% potential increase in price ($196 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 15, 2025.

This SmartFares deal was found by Cheapflights users on 9/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:40 pmBOS - KIX
2 stops27h 55mHainan Airlines
Tue 12/22:35 pmKIX - BOS
1 stop39h 45mHainan Airlines
Deal found 9/14$937
This oojo deal was found by Cheapflights users on 9/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/271:30 amBOS - KIX
1 stop39h 50mCathay Pacific
Tue 11/44:55 pmKIX - BOS
1 stop43h 05mCathay Pacific
Deal found 9/13$942
This oojo deal was found by Cheapflights users on 9/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/291:30 amBOS - KIX
1 stop30h 35mCathay Pacific
Thu 11/69:50 amKIX - BOS
1 stop26h 10mCathay Pacific
Deal found 9/15$951
This FlightHub deal was found by Cheapflights users on 9/13. 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 9/161:40 amBOS - KIX
1 stop40h 00mCathay Pacific
Mon 9/229:10 amKIX - BOS
1 stop26h 50mCathay Pacific
Deal found 9/13$957
This oojo deal was found by Cheapflights users on 9/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/171:40 amBOS - KIX
1 stop22h 20mCathay Pacific
Sun 9/215:45 pmKIX - BOS
1 stop42h 15mCathay Pacific
Deal found 9/13$958
This Trip.com deal was found by Cheapflights users on 9/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1512:55 pmBOS - KIX
1 stop19h 05mMultiple Airlines
Fri 9/196:05 pmKIX - BOS
1 stop28h 50mMultiple Airlines
Deal found 9/14$964
This Gurufare deal was found by Cheapflights users on 9/14. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1612:30 amBOS - KIX
1 stop27h 20mCathay Pacific
Thu 12/49:25 amKIX - BOS
1 stop26h 35mCathay Pacific
Deal found 9/14$972

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 September 15, 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

Mon 10/20

1:40 am-1:00 pm

1 stop22h 20m

Osaka Kansai Intl

Thu 11/6

9:25 am-10:00 pm

1 stop26h 35m

$977

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 10/20

1:40 am-6:10 pm

1 stop27h 30m

Osaka Kansai Intl

Wed 11/5

4:05 pm-10:00 pm

2 stops43h 55m

$994

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 3/11

1:30 am-2:55 pm

2 stops24h 25m

Osaka Kansai Intl

Tue 3/24

4:05 pm-11:00 pm

2 stops43h 55m

$1,010

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sat 1/17

3:25 pm-4:40 pm

2 stops35h 15m

Osaka Kansai Intl

Sat 2/7

6:35 pm-9:42 pm

1 stop17h 07m

$1,025

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 10/20

1:40 am-1:00 pm

1 stop22h 20m

Osaka Kansai Intl

Fri 11/7

4:55 pm-10:00 pm

1 stop43h 05m

$1,027

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sat 2/21

12:30 am-12:45 pm

1 stop22h 15m

Osaka Kansai Intl

Thu 2/26

9:25 am-10:00 pm

1 stop26h 35m

$1,027

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Fri 3/13

1:30 am-3:15 pm

1 stop24h 45m

Osaka Kansai Intl

Sun 3/22

6:05 pm-11:00 pm

1 stop41h 55m

$1,027

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Thu 3/12

1:30 am-2:55 pm

2 stops24h 25m

Osaka Kansai Intl

Mon 3/23

9:50 am-11:00 pm

1 stop26h 10m

$1,044

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 3/11

1:30 am-6:20 am

1 stop39h 50m

Osaka Kansai Intl

Fri 3/20

4:05 pm-11:00 pm

2 stops43h 55m

$1,044

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sat 1/31

12:30 am-9:05 pm

1 stop30h 35m

Osaka Kansai Intl

Sat 2/14

4:05 pm-10:00 pm

2 stops43h 55m

$1,057

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 21 results
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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, February is the cheapest month in which you can book a flight from Boston to Osaka Kansai Intl Airport (average of $866). Flying from Boston to Osaka Kansai Intl Airport in June is currently the most expensive (average of $1,310). 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 September 15, 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 45% versus a flight in the afternoon.

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 September 15, 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
961 reviews

Entertainment

7.9

Boarding

8.6

Food

7.7

Crew

8.7

Comfort

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
ANA
8.4
Very good
961 reviews
ANA
8.4
Very good
961 reviews

Entertainment

7.9

Boarding

8.6

Food

7.7

Crew

8.7

Comfort

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
Cathay Pacific
7.6
Good
993 reviews
ANA
8.4
Very good
961 reviews

Entertainment

7.9

Boarding

8.6

Food

7.7

Crew

8.7

Comfort

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
United Airlines
7.4
Good
8,929 reviews
ANA
8.4
Very good
961 reviews

Entertainment

7.9

Boarding

8.6

Food

7.7

Crew

8.7

Comfort

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
Air Canada
7.1
Good
10,000 reviews
ANA
8.4
Very good
961 reviews

Entertainment

7.9

Boarding

8.6

Food

7.7

Crew

8.7

Comfort

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me

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 22h 20m. The distance between Boston and Osaka Kansai Intl Airport is about 6872 mi. This flight may include one or multiple stops.

  • 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 $883 and $979, 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, February is the cheapest month in which you can book a flight from Boston to Osaka Kansai Intl Airport (average of $866). Flying from Boston to Osaka Kansai Intl Airport in June is currently the most expensive (average of $1,310). 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
Izumisano
Nara
Nishinomiya
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.
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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$787Average$1,115FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$883Average$1,226FlexibilityNo cancel feeOn-time72%
ANACheapest$979Average$1,289FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$1,056Average$1,443FlexibilityNo cancel feeOn-time69%

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