$511+ Cheap flights from Boston (BOS) to Kansai Intl (KIX)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KIX
Nov 13 — Nov 201
Round-trip
1 adult, Economy
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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
Best
Last-minute
One-way
Cheapest flights from Boston to Kansai IntlExplore 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 October 14, 2026.
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 October 14, 2026.
This United Airlines deal was found by Cheapflights users on 10/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/52:59 pm -
2 stops35h 46m
Fri 12/186:35 pm -
1 stop18h 48m
Deal found 10/13![United Airlines logo]()
$922
This Cheapflightsfares deal was found by Cheapflights users on 10/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:14 am -
2 stops21h 26m
Tue 12/17:25 am -
1 stop24h 00m
Deal found 10/10![Japan Airlines logo]()
$935
This Air Canada deal was found by Cheapflights users on 10/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:35 pm -
2 stops33h 05m
Mon 2/157:25 pm -
2 stops33h 28m
Deal found 10/10![Air Canada logo]()
$937
This Cheapflightsfares deal was found by Cheapflights users on 10/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/810:24 am -
2 stops21h 56m
Sun 12/207:25 am -
1 stop24h 00m
Deal found 10/12![Japan Airlines logo]()
$941
This Cheapflightsfares deal was found by Cheapflights users on 10/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1712:00 pm -
1 stop20h 15m
Wed 12/27:25 am -
2 stops23h 38m
Deal found 10/12![Japan Airlines logo]()
$942
This Cheapflightsfares deal was found by Cheapflights users on 10/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/227:13 am -
2 stops25h 02m
Mon 11/309:10 pm -
2 stops32h 16m
Deal found 10/10![Japan Airlines logo]()
$946
Best flights from Boston to Kansai IntlDiscover carefully curated flight deals from Boston to Kansai Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 14, 2026.
Discover carefully curated flight deals from Boston to Kansai Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 14, 2026.
This United Airlines deal was found by Cheapflights users on 10/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/52:59 pm -
2 stops35h 46m
Fri 12/186:35 pm -
2 stops20h 43m
Deal found 10/13![United Airlines logo]()
$922
This Korean Air deal was found by Cheapflights users on 10/10. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2511:10 am -
1 stop39h 50m
Wed 12/29:00 am -
1 stop37h 50m
Deal found 10/10![Korean Air logo]()
$981
This United Airlines deal was found by Cheapflights users on 10/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/55:27 pm -
2 stops33h 18m
Tue 1/123:20 pm -
2 stops41h 10m
Deal found 10/13![United Airlines logo]()
$988
This Korean Air deal was found by Cheapflights users on 10/14. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/811:10 am -
1 stop21h 30m
Thu 11/1911:55 am -
1 stop34h 55m
Deal found 10/14![Korean Air logo]()
$1,026
This Korean Air deal was found by Cheapflights users on 10/11. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:10 am -
1 stop35h 40m
Tue 11/176:10 pm -
1 stop28h 40m
Deal found 10/11![Korean Air logo]()
$1,026
Last-minute flights from Boston to Kansai IntlDiscover last-minute flight deals from Boston to Kansai Intl. Data last updated October 14, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Kansai Intl. Data last updated October 14, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 10/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:35 pm -
2 stops33h 05m
Mon 2/157:25 pm -
2 stops33h 28m
Deal found 10/10![Air Canada logo]()
$937
This oojo deal was found by Cheapflights users on 10/10. 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.
Sun 11/1512:00 pm -
1 stop18h 25m
Mon 2/157:25 am -
1 stop24h 10m
Deal found 10/10![Japan Airlines logo]()
$971
This Cheapflightsfares deal was found by Cheapflights users on 10/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:14 am -
2 stops21h 26m
Tue 12/17:25 am -
1 stop24h 00m
Deal found 10/10![Japan Airlines logo]()
$935
This Cheapflightsfares deal was found by Cheapflights users on 10/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1712:00 pm -
1 stop20h 15m
Wed 12/27:25 am -
2 stops23h 38m
Deal found 10/12![Japan Airlines logo]()
$942
This Cheapflightsfares deal was found by Cheapflights users on 10/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/227:13 am -
2 stops25h 02m
Mon 11/309:10 pm -
2 stops32h 16m
Deal found 10/10![Japan Airlines logo]()
$946
This Cheapflightsfares deal was found by Cheapflights users on 10/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/256:00 am -
2 stops26h 15m
Wed 12/27:25 am -
2 stops22h 14m
Deal found 10/10![Japan Airlines logo]()
$965
This oojo deal was found by Cheapflights users on 10/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2912:00 pm -
1 stop35h 30m
Mon 12/148:05 pm -
1 stop35h 20m
Deal found 10/12![Japan Airlines logo]()
$975
One-way flights from Boston to Kansai IntlSearch for one-way flight options from Boston to Kansai Intl. Find affordable one-way fares based on user searches. Data last updated October 14, 2026.
Search for one-way flight options from Boston to Kansai Intl. Find affordable one-way fares based on user searches. Data last updated October 14, 2026.
This FlightHub deal was found by Cheapflights users on 10/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/276:35 pm -
2 stops57h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Air Canada logo]()
$511
This Air Canada deal was found by Cheapflights users on 10/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/265:45 am -
2 stops24h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Multiple Airlines logo]()
$522
This Cheapflightsfares deal was found by Cheapflights users on 10/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:00 pm -
1 stop18h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Japan Airlines logo]()
$560
This Cheapflightsfares deal was found by Cheapflights users on 10/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:14 am -
2 stops23h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![Japan Airlines logo]()
$564
This oojo deal was found by Cheapflights users on 10/11. 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.
Mon 10/196:00 am -
1 stop23h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Japan Airlines logo]()
$581
This United Airlines deal was found by Cheapflights users on 10/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:01 pm -
2 stops32h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![United Airlines logo]()
$583
This United Airlines deal was found by Cheapflights users on 10/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:01 pm -
1 stop32h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![United Airlines logo]()
$599
This Cheapflightsfares deal was found by Cheapflights users on 10/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/317:00 am -
1 stop22h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Japan Airlines logo]()
$606
This American Airlines deal was found by Cheapflights users on 10/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/268:05 am -
1 stop21h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![American Airlines logo]()
$633
This Kiwi.com deal was found by Cheapflights users on 10/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:13 am -
3 stops50h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Multiple Airlines logo]()
$635
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 October 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $871 (Justfly.com) |
One-way from | $511 (FlightHub) |
Popular in | June |
Cheapest in | December |
Average price | $1,559 |
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 7,457,451 searches. Data last updated October 14, 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
Cheapest round-trip
BostonOsaka
BOS Boston Logan Intl - KIX Osaka Kansai Intl
BOSKIX
Boston Logan Intl
Thu 11/26
5:45 am-8:25 pm
2 stops24h 40m
Osaka Kansai Intl
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$522
BostonOsaka
BOS Boston Logan Intl - KIX Osaka Kansai Intl
BOSKIX
Boston Logan Intl
Sat 2/13
8:15 pm-4:45 pm
1 stop30h 30m
Osaka Kansai Intl
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$583
BostonOsaka
BOS Boston Logan Intl - KIX Osaka Kansai Intl
BOSKIX
Boston Logan Intl
Mon 10/19
5:01 pm-2:50 pm
2 stops32h 49m
Osaka Kansai Intl
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$583
BostonOsaka
BOS Boston Logan Intl - KIX Osaka Kansai Intl
BOSKIX
Boston Logan Intl
Thu 1/28
6:00 am-7:10 pm
1 stop23h 10m
Osaka Kansai Intl
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$631
Quickest round-trip
BostonOsaka
BOS Boston Logan Intl - KIX Osaka Kansai Intl
BOSKIX
Boston Logan Intl
Thu 11/26
8:05 am-7:10 pm
1 stop21h 05m
Osaka Kansai Intl
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$633
BostonOsaka
BOS Boston Logan Intl - KIX Osaka Kansai Intl
BOSKIX
Boston Logan Intl
Fri 11/27
11:10 am-10:40 pm
1 stop21h 30m
Osaka Kansai Intl
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$638
BostonOsaka
BOS Boston Logan Intl - KIX Osaka Kansai Intl
BOSKIX
Boston Logan Intl
Thu 1/28
12:26 pm-4:45 pm
3 stops38h 19m
Osaka Kansai Intl
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$639
BostonOsaka
BOS Boston Logan Intl - KIX Osaka Kansai Intl
BOSKIX
Boston Logan Intl
Sat 12/5
2:59 pm-4:45 pm
2 stops35h 46m
Osaka Kansai Intl
Fri 12/18
6:35 pm-1:18 am
2 stops20h 43m
$922
BostonOsaka
BOS Boston Logan Intl - KIX Osaka Kansai Intl
BOSKIX
Boston Logan Intl
Wed 11/25
11:10 am-5:00 pm
1 stop39h 50m
Osaka Kansai Intl
Wed 12/2
9:00 am-8:50 am
1 stop37h 50m
$981
BostonOsaka
BOS Boston Logan Intl - KIX Osaka Kansai Intl
BOSKIX
Boston Logan Intl
Tue 1/5
5:27 pm-4:45 pm
2 stops33h 18m
Osaka Kansai Intl
Tue 1/12
3:20 pm-6:30 pm
2 stops41h 10m
$988
Showing 1-10 of 12 resultsSorted by cheapest first
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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- 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.
BOS-KIX
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
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 October 14, 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.
Overall
8.3
Boarding
8.5
Crew
8.7
Entertainment
8.0
Food
7.8
Comfort
8.2
Reviews
1 / 20
8.0
ExcellentRyan,Aug 2026
JFK - HND
Overall
8.3
Boarding
8.5
Crew
8.7
Entertainment
8.0
Food
7.8
Comfort
8.2
Reviews
1 / 20
8.0
ExcellentRyan,Aug 2026
JFK - HND
Overall
8.3
Boarding
8.5
Crew
8.7
Entertainment
8.0
Food
7.8
Comfort
8.2
Reviews
1 / 20
8.0
ExcellentRyan,Aug 2026
JFK - HND
Overall
8.3
Boarding
8.5
Crew
8.7
Entertainment
8.0
Food
7.8
Comfort
8.2
Reviews
1 / 20
8.0
ExcellentRyan,Aug 2026
JFK - HND
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.
Traveling to a place near Osaka Kansai Intl Airport?
Book flights to Osaka Kansai Intl Airport if you plan to visit one of these locationsIzumisano
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Browse through other flights departing from Boston. Flights are based on user searches made on Cheapflights and were last updated on October 14, 2026.
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Top 3 airlines flying from Boston to Kansai Intl
Discover the top 3 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 7,457,451 searches. Data last updated October 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$837 | Average$1,512 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$920 | Average$1,393 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$941 | Average$1,291 | FlexibilityNo cancel fee | On-time72% |