$464+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KIX
Jul 16 — Jul 231
Round-trip
1 adult, Economy
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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 June 16, 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 June 16, 2026.
This SmartFares deal was found by Cheapflights users on 6/13. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:40 pm
BOS
- KIX
2 stops27h 55m
Hainan Airlines
Sat 11/282:35 pm
KIX
- BOS
1 stop39h 45m
Hainan Airlines
Deal found 6/13![Hainan Airlines logo]()
$889
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
Wed 11/186:40 pm
BOS
- KIX
2 stops27h 55m
Hainan Airlines
Sat 11/282:35 pm
KIX
- BOS
1 stop39h 45m
Hainan Airlines
Deal found 6/11![Hainan Airlines logo]()
$905
This Booking.com deal was found by Cheapflights users on 6/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:00 am
BOS
- KIX
1 stop21h 40m
Korean Air
Tue 11/172:15 am
KIX
- BOS
1 stop20h 25m
Korean Air
Deal found 6/16![Korean Air logo]()
$906
This FlightHub deal was found by Cheapflights users on 6/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:30 am
BOS
- KIX
1 stop21h 15m
ANA
Thu 12/106:45 am
KIX
- BOS
2 stops21h 17m
ANA
Deal found 6/15![ANA logo]()
$910
This Justfly.com deal was found by Cheapflights users on 6/12. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:30 am
BOS
- KIX
2 stops23h 20m
ANA
Wed 11/117:05 am
KIX
- BOS
2 stops19h 42m
ANA
Deal found 6/12![ANA logo]()
$911
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/99:30 am
BOS
- KIX
2 stops23h 50m
ANA
Thu 9/174:55 pm
KIX
- BOS
1 stop19h 04m
ANA
Deal found 6/11![ANA logo]()
$915
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:45 am
BOS
- KIX
1 stop42h 05m
ANA
Thu 10/14:55 pm
KIX
- BOS
1 stop19h 02m
ANA
Deal found 6/12![ANA logo]()
$920
This United Airlines deal was found by Cheapflights users on 6/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:01 pm
BOS
- KIX
2 stops32h 49m
United Airlines
Tue 9/154:55 pm
KIX
- BOS
1 stop27h 59m
United Airlines
Deal found 6/15![United Airlines logo]()
$921
This Korean Air deal was found by Cheapflights users on 6/11. 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.
Wed 9/912:55 pm
BOS
- KIX
1 stop33h 25m
Korean Air
Thu 9/176:15 pm
KIX
- BOS
1 stop28h 55m
Korean Air
Deal found 6/11![Korean Air logo]()
$923
This United Airlines deal was found by Cheapflights users on 6/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:30 am
BOS
- KIX
1 stop21h 15m
United Airlines
Thu 12/108:20 am
KIX
- BOS
3 stops29h 34m
United Airlines
Deal found 6/15![United Airlines logo]()
$924
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Tue 9/17:23 pm
BOS
- KIX
2 stops30h 27m
United Airlines
Thu 10/14:55 pm
KIX
- BOS
2 stops26h 05m
United Airlines
Deal found 6/12![United Airlines logo]()
$926
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 June 16, 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 June 16, 2026.
This Korean Air deal was found by Cheapflights users on 6/11. 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.
Wed 9/912:55 pm
BOS
- KIX
1 stop33h 25m
Korean Air
Thu 9/176:15 pm
KIX
- BOS
1 stop28h 55m
Korean Air
Deal found 6/11![Korean Air logo]()
$923
This China Eastern deal was found by Cheapflights users on 6/12. 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 China Eastern is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:30 am
BOS
- KIX
2 stops41h 50m
China Eastern
Thu 11/129:20 am
KIX
- BOS
2 stops26h 24m
China Eastern
Deal found 6/12![China Eastern logo]()
$1,251
This Cathay Pacific deal was found by Cheapflights users on 6/12. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/101:45 am
BOS
- KIX
2 stops24h 05m
Cathay Pacific
Sun 10/186:30 pm
KIX
- BOS
1 stop41h 35m
Cathay Pacific
Deal found 6/12![Cathay Pacific logo]()
$1,347
This Delta deal was found by Cheapflights users on 6/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/125:30 am
BOS
- KIX
2 stops28h 10m
Delta
Sat 9/52:15 am
KIX
- BOS
2 stops35h 23m
Delta
Deal found 6/14![Delta logo]()
$1,492
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:25 am
BOS
- KIX
2 stops42h 25m
United Airlines
Sun 9/64:55 pm
KIX
- BOS
2 stops28h 22m
United Airlines
Deal found 6/14![United Airlines logo]()
$1,584
This China Airlines deal was found by Cheapflights users on 6/15. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:20 pm
BOS
- KIX
2 stops26h 40m
Multiple Airlines
Fri 8/147:05 pm
KIX
- BOS
2 stops32h 36m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$1,595
This Korean Air deal was found by Cheapflights users on 6/13. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1811:00 am
BOS
- KIX
1 stop21h 40m
Korean Air
Mon 11/306:10 pm
KIX
- BOS
2 stops33h 37m
Korean Air
Deal found 6/13![Korean Air logo]()
$934
This Cathay Pacific deal was found by Cheapflights users on 6/13. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/512:30 am
BOS
- KIX
2 stops24h 25m
Cathay Pacific
Sun 11/2910:00 am
KIX
- BOS
1 stop26h 00m
Cathay Pacific
Deal found 6/13![Cathay Pacific logo]()
$1,623
This Korean Air deal was found by Cheapflights users on 6/11. 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.
Mon 11/308:45 pm
BOS
- KIX
2 stops24h 00m
Korean Air
Tue 12/152:15 am
KIX
- BOS
1 stop20h 25m
Korean Air
Deal found 6/11![Korean Air logo]()
$1,557
This Korean Air deal was found by Cheapflights users on 6/13. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:00 am
BOS
- KIX
2 stops26h 40m
Korean Air
Sat 11/282:15 am
KIX
- BOS
2 stops25h 32m
Korean Air
Deal found 6/13![Korean Air logo]()
$1,718
Last-minute flights from Boston to Kansai IntlDiscover last-minute flight deals from Boston to Kansai Intl. Data last updated June 16, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Kansai Intl. Data last updated June 16, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 6/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/51:15 pm
BOS
- KIX
1 stop18h 35m
Japan Airlines
Thu 7/237:35 am
KIX
- BOS
1 stop23h 40m
Japan Airlines
Deal found 6/15![Japan Airlines logo]()
$1,312
This American Airlines deal was found by Cheapflights users on 6/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/57:00 am
BOS
- KIX
1 stop22h 45m
American Airlines
Thu 7/235:45 pm
KIX
- BOS
1 stop18h 58m
American Airlines
Deal found 6/15![American Airlines logo]()
$1,379
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/135:30 am
BOS
- KIX
2 stops26h 15m
Delta
Mon 7/2012:35 pm
KIX
- BOS
2 stops32h 00m
Delta
Deal found 6/11![Delta logo]()
$1,492
This Cheapflightsfares deal was found by Cheapflights users on 6/16. 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 7/157:00 am
BOS
- KIX
2 stops24h 50m
Japan Airlines
Tue 7/287:35 am
KIX
- BOS
1 stop23h 40m
Japan Airlines
Deal found 6/16![Japan Airlines logo]()
$1,317
This Orbitz deal was found by Cheapflights users on 6/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/151:15 pm
BOS
- KIX
1 stop18h 35m
Multiple Airlines
Wed 7/296:40 am
KIX
- BOS
2 stops25h 19m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$1,411
This KAYAK deal was found by Cheapflights users on 6/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:05 pm
BOS
- KIX
1 stop22h 10m
Lufthansa
Mon 8/39:30 am
KIX
- BOS
1 stop45h 10m
Lufthansa
Deal found 6/11![Lufthansa logo]()
$1,517
This KAYAK deal was found by Cheapflights users on 6/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:05 pm
BOS
- KIX
1 stop22h 10m
Lufthansa
Tue 8/47:00 am
KIX
- BOS
2 stops47h 40m
Lufthansa
Deal found 6/11![Lufthansa logo]()
$1,519
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/168:05 pm
BOS
- KIX
1 stop22h 10m
Lufthansa
Mon 8/39:30 am
KIX
- BOS
1 stop45h 10m
Lufthansa
Deal found 6/11![Lufthansa logo]()
$1,511
This KAYAK deal was found by Cheapflights users on 6/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/209:25 am
BOS
- KIX
2 stops32h 50m
Lufthansa
Mon 8/39:30 am
KIX
- BOS
1 stop45h 10m
Lufthansa
Deal found 6/11![Lufthansa logo]()
$1,521
This Cheapflightsfares deal was found by Cheapflights users on 6/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:46 pm
BOS
- KIX
2 stops31h 14m
Japan Airlines
Mon 7/277:35 am
KIX
- BOS
1 stop23h 40m
Japan Airlines
Deal found 6/15![Japan Airlines logo]()
$1,383
This Expedia deal was found by Cheapflights users on 6/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:20 am
BOS
- KIX
2 stops23h 30m
Multiple Airlines
Mon 7/279:00 pm
KIX
- BOS
2 stops38h 59m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$1,415
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 June 16, 2026.
Search for one-way flight options from Boston to Kansai Intl. Find affordable one-way fares based on user searches. Data last updated June 16, 2026.
This SmartFares deal was found by Cheapflights users on 6/12. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:40 pm
BOS
- KIX
2 stops29h 05m
Hainan Airlines
Deal found 6/12![Hainan Airlines logo]()
$464
This SmartFares deal was found by Cheapflights users on 6/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:40 pm
BOS
- KIX
2 stops29h 05m
Hainan Airlines
Deal found 6/11![Hainan Airlines logo]()
$524
This FlightHub deal was found by Cheapflights users on 6/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:00 am
BOS
- KIX
2 stops26h 55m
Japan Airlines
Deal found 6/14![Japan Airlines logo]()
$574
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/243:55 pm
BOS
- KIX
3 stops33h 15m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$575
This Orbitz deal was found by Cheapflights users on 6/13. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:00 am
BOS
- KIX
2 stops38h 15m
Japan Airlines
Deal found 6/13![Japan Airlines logo]()
$584
This Mytrip deal was found by Cheapflights users on 6/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:35 pm
BOS
- KIX
3 stops33h 35m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$612
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:28 am
BOS
- KIX
3 stops45h 32m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$614
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:30 pm
BOS
- KIX
3 stops49h 15m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$619
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:05 am
BOS
- KIX
3 stops57h 10m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$621
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 June 16, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $889 (SmartFares) |
One-way from | $464 (SmartFares) |
Popular in | June |
Cheapest in | February |
Average price | $1,905 |
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 June 16, 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 - KIX
BOSKIX
Boston Logan Intl
Wed 9/9
12:55 pm-11:20 am
1 stop33h 25m
Osaka Kansai Intl
Thu 9/17
6:15 pm-10:10 am
1 stop28h 55m
$923
BostonOsaka
BOS - KIX
BOSKIX
Boston Logan Intl
Wed 11/18
11:00 am-10:40 pm
1 stop21h 40m
Osaka Kansai Intl
Mon 11/30
6:10 pm-1:47 pm
2 stops33h 37m
$934
BostonOsaka
BOS - KIX
BOSKIX
Boston Logan Intl
Thu 10/29
6:30 am-1:20 pm
2 stops41h 50m
Osaka Kansai Intl
Thu 11/12
9:20 am-9:44 pm
2 stops26h 24m
$1,251
BostonOsaka
BOS - KIX
BOSKIX
Boston Logan Intl
Sat 10/10
1:45 am-2:50 pm
2 stops24h 05m
Osaka Kansai Intl
Sun 10/18
6:30 pm-11:05 pm
1 stop41h 35m
$1,347
BostonOsaka
BOS - KIX
BOSKIX
Boston Logan Intl
Sun 7/12
5:30 am-10:40 pm
2 stops28h 10m
Osaka Kansai Intl
Sat 9/5
2:15 am-12:38 am
2 stops35h 23m
$1,492
Quickest round-trip
BostonOsaka
BOS - KIX
BOSKIX
Boston Logan Intl
Mon 11/30
8:45 pm-10:45 am
2 stops24h 00m
Osaka Kansai Intl
Tue 12/15
2:15 am-8:40 am
1 stop20h 25m
$1,557
BostonOsaka
BOS - KIX
BOSKIX
Boston Logan Intl
Wed 7/15
7:25 am-2:50 pm
2 stops42h 25m
Osaka Kansai Intl
Sun 9/6
4:55 pm-8:17 am
2 stops28h 22m
$1,584
BostonOsaka
BOS - KIX
BOSKIX
Boston Logan Intl
Wed 8/5
8:20 pm-12:00 pm
2 stops26h 40m
Osaka Kansai Intl
Fri 8/14
7:05 pm-2:41 pm
2 stops32h 36m
$1,595
BostonOsaka
BOS - KIX
BOSKIX
Boston Logan Intl
Thu 11/5
12:30 am-2:55 pm
2 stops24h 25m
Osaka Kansai Intl
Sun 11/29
10:00 am-10:00 pm
1 stop26h 00m
$1,623
BostonOsaka
BOS - KIX
BOSKIX
Boston Logan Intl
Thu 11/5
6:00 am-10:40 pm
2 stops26h 40m
Osaka Kansai Intl
Sat 11/28
2:15 am-1:47 pm
2 stops25h 32m
$1,718
Showing 1-10 of 17 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 June.
| 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 Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Boston-Osaka Kansai Intl Airport flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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
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 $979). Flying from Boston to Osaka Kansai Intl Airport in June is currently the most expensive (average of $1,905). 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.
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 June 16, 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
Food
7.7
Crew
8.7
Comfort
8.2
Entertainment
7.9
Boarding
8.5
Reviews
1 / 20
4.0
OkayPeggyLee,Jun 2026
BKK - NRT
Overall
8.3
Food
7.7
Crew
8.7
Comfort
8.2
Entertainment
7.9
Boarding
8.5
Reviews
1 / 20
4.0
OkayPeggyLee,Jun 2026
BKK - NRT
Overall
8.3
Food
7.7
Crew
8.7
Comfort
8.2
Entertainment
7.9
Boarding
8.5
Reviews
1 / 20
4.0
OkayPeggyLee,Jun 2026
BKK - NRT
Overall
8.3
Food
7.7
Crew
8.7
Comfort
8.2
Entertainment
7.9
Boarding
8.5
Reviews
1 / 20
4.0
OkayPeggyLee,Jun 2026
BKK - NRT
Overall
8.3
Food
7.7
Crew
8.7
Comfort
8.2
Entertainment
7.9
Boarding
8.5
Reviews
1 / 20
4.0
OkayPeggyLee,Jun 2026
BKK - NRT
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 locationsNara
Izumisano
Himeji
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Other flights to Kansai Intl
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Boston and Kansai Intl flights
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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 June 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$762 | Average$1,115 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$796 | Average$1,484 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$833 | Average$1,238 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$979 | Average$1,519 | FlexibilityNo cancel fee | On-time69% |