HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Kansai Intl

$415+ 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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KIX
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Kansai Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 February 13, 2026.

This oojo deal was found by Cheapflights users on 2/9. 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.
Fri 2/206:40 pm
BOS
-
KIX
2 stops27h 55m
Hainan Airlines
Thu 2/262:35 pm
KIX
-
BOS
1 stop39h 45m
Hainan Airlines
Deal found 2/9$857
This oojo deal was found by Cheapflights users on 2/11. 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 3/187:40 pm
BOS
-
KIX
2 stops27h 55m
Hainan Airlines
Sat 3/282:35 pm
KIX
-
BOS
1 stop39h 05m
Hainan Airlines
Deal found 2/11$862
This Gotogate deal was found by Cheapflights users on 2/12. 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.
Tue 2/1710:15 am
BOS
-
KIX
2 stops33h 50m
Multiple Airlines
Thu 3/57:25 pm
KIX
-
BOS
2 stops28h 37m
Multiple Airlines
Deal found 2/12$886
This Gotogate deal was found by Cheapflights users on 2/12. 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 2/163:35 pm
BOS
-
KIX
2 stops52h 30m
Multiple Airlines
Thu 3/57:25 pm
KIX
-
BOS
2 stops30h 47m
Multiple Airlines
Deal found 2/12$893
This Gotogate deal was found by Cheapflights users on 2/12. 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 2/163:35 pm
BOS
-
KIX
2 stops52h 30m
Multiple Airlines
Tue 3/37:25 pm
KIX
-
BOS
2 stops41h 12m
Multiple Airlines
Deal found 2/12$900
This Gotogate deal was found by Cheapflights users on 2/12. 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.
Tue 2/175:30 am
BOS
-
KIX
2 stops26h 20m
Multiple Airlines
Tue 3/37:25 pm
KIX
-
BOS
2 stops34h 30m
Multiple Airlines
Deal found 2/12$908
This Gotogate deal was found by Cheapflights users on 2/12. 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.
Tue 2/1710:15 am
BOS
-
KIX
2 stops22h 05m
Multiple Airlines
Wed 3/48:00 am
KIX
-
BOS
2 stops28h 37m
Multiple Airlines
Deal found 2/12$909
This Gotogate deal was found by Cheapflights users on 2/12. 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.
Tue 2/175:30 am
BOS
-
KIX
2 stops26h 50m
Multiple Airlines
Mon 3/27:25 pm
KIX
-
BOS
2 stops41h 12m
Multiple Airlines
Deal found 2/12$912
This oojo deal was found by Cheapflights users on 2/10. 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 8/311:45 am
BOS
-
KIX
1 stop24h 25m
Cathay Pacific
Mon 9/145:35 pm
KIX
-
BOS
1 stop42h 30m
Cathay Pacific
Deal found 2/10$923
This Gotogate deal was found by Cheapflights users on 2/12. 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.
Tue 2/175:30 am
BOS
-
KIX
2 stops38h 35m
Multiple Airlines
Fri 3/68:00 am
KIX
-
BOS
2 stops28h 37m
Multiple Airlines
Deal found 2/12$931
This Cathay Pacific deal was found by Cheapflights users on 2/10. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/111:45 am
BOS
-
KIX
1 stop24h 25m
Cathay Pacific
Thu 10/229:45 am
KIX
-
BOS
1 stop26h 20m
Cathay Pacific
Deal found 2/10$951
This Orbitz deal was found by Cheapflights users on 2/12. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:55 pm
BOS
-
KIX
2 stops31h 45m
Multiple Airlines
Sat 3/73:00 pm
KIX
-
BOS
2 stops21h 37m
Multiple Airlines
Deal found 2/12$958

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 February 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$862
(oojo)

One-way from

$415
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$979
Provider with most accurate pricing for Boston Logan Intl-Osaka Kansai Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Osaka Kansai Intl flights.
Search Deals
From Boston Logan Intl to Osaka Kansai Intl
Search Deals
One-way flight from Boston Logan Intl to Osaka Kansai Intl
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($249 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 13, 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

Wed 3/18

7:40 pm-12:35 pm

2 stops27h 55m

Osaka Kansai Intl

Sat 3/28

2:35 pm-4:40 pm

1 stop39h 05m

$862

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 2/22

4:35 pm-7:25 pm

2 stops36h 50m

Osaka Kansai Intl

Tue 3/17

7:25 pm-10:02 am

2 stops27h 37m

$1,000

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Fri 4/17

6:15 am-4:25 pm

2 stops21h 10m

Osaka Kansai Intl

Fri 4/24

7:35 am-9:56 am

2 stops39h 21m

$1,166

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Fri 6/5

6:40 pm-12:45 pm

2 stops29h 05m

Osaka Kansai Intl

Tue 6/30

7:45 am-5:40 pm

3 stops46h 55m

$1,221

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sat 7/11

6:50 pm-4:25 pm

2 stops32h 35m

Osaka Kansai Intl

Fri 7/24

7:45 am-5:40 pm

3 stops46h 55m

$1,239

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 4/15

5:30 am-2:50 pm

1 stop20h 20m

Osaka Kansai Intl

Wed 4/22

4:55 pm-6:21 am

1 stop26h 26m

$1,244

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sat 4/18

8:16 pm-2:50 pm

1 stop29h 34m

Osaka Kansai Intl

Wed 4/29

4:55 pm-9:28 pm

1 stop17h 33m

$1,244

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Fri 3/13

7:40 pm-12:35 pm

2 stops27h 55m

Osaka Kansai Intl

Wed 3/25

7:00 pm-3:28 pm

3 stops33h 28m

$1,244

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 4/19

8:16 pm-2:50 pm

1 stop29h 34m

Osaka Kansai Intl

Tue 4/28

4:55 pm-12:46 pm

2 stops32h 51m

$1,249

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 4/14

9:20 am-2:50 pm

2 stops40h 30m

Osaka Kansai Intl

Wed 4/29

4:55 pm-12:46 pm

2 stops32h 51m

$1,249

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Showing 1-10 of 23 results
1
2
3

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice 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 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, 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 May is currently the most expensive (average of $1,243). 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 February 13, 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
1,092 reviews

Entertainment

7.9

Overall

8.4

Comfort

8.2

Food

7.8

Crew

8.7

Boarding

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!
ANA
8.4
Very good
1,092 reviews
ANA
8.4
Very good
1,092 reviews

Entertainment

7.9

Overall

8.4

Comfort

8.2

Food

7.8

Crew

8.7

Boarding

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!
Japan Airlines
8.3
Very good
1,704 reviews
ANA
8.4
Very good
1,092 reviews

Entertainment

7.9

Overall

8.4

Comfort

8.2

Food

7.8

Crew

8.7

Boarding

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!
Cathay Pacific
7.6
Good
1,162 reviews
ANA
8.4
Very good
1,092 reviews

Entertainment

7.9

Overall

8.4

Comfort

8.2

Food

7.8

Crew

8.7

Boarding

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!
United Airlines
7.4
Good
9,283 reviews
ANA
8.4
Very good
1,092 reviews

Entertainment

7.9

Overall

8.4

Comfort

8.2

Food

7.8

Crew

8.7

Boarding

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!
Air Canada
7.1
Good
10,717 reviews
ANA
8.4
Very good
1,092 reviews

Entertainment

7.9

Overall

8.4

Comfort

8.2

Food

7.8

Crew

8.7

Boarding

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Feb 2026

BKK - NRT

Really enjoyed fly with ANA for our first time. Thank you!

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 27h 55m. 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 United Airlines, with the lowest prices starting at $909 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, 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 May is currently the most expensive (average of $1,243). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 Kansai Intl flights
Hartford to Osaka Itami 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 February 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$787Average$1,115FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$909Average$1,294FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$979Average$1,519FlexibilityNo cancel feeOn-time69%
ANACheapest$1,029Average$1,313FlexibilityNo cancel feeOn-time80%
Japan AirlinesCheapest$1,239Average$1,290FlexibilityNo cancel feeOn-time79%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
Cookie settings©2026 Cheapflights