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Kansai Intl

$472+ 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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KIX
abr. 20 — abr. 271
dom. 4/20
dom. 4/27
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Osaka Kansai Intl are usually found in September or February, booked 65 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

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 abril 15, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,112
(oojo)

One-way from

$472
(StudentUniverse)

Popular in

July

Cheapest in

September

Average price

$1,285
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
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Highest demand for flights based on searches. 18% potential increase in price ($295 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($54 potential savings vs. average RT price).
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Average for round-trip flights in April 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 abril 15, 2025.

This oojo deal was found by Cheapflights users on 4/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/51:40 amBOS - KIX
2 stops24h 15mCathay Pacific
sáb. 9/209:10 amKIX - BOS
1 stop26h 50mCathay Pacific
Deal found 4/14$1,112
This Air Canada deal was found by Cheapflights users on 4/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/116:40 pmBOS - KIX
2 stops32h 45mAir Canada
dom. 11/23:40 pmKIX - BOS
2 stops34h 32mAir Canada
Deal found 4/13$1,121
This Mytrip deal was found by Cheapflights users on 4/14. 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.
lun. 5/124:30 pmBOS - KIX
1 stop30h 10mMultiple Airlines
lun. 5/198:55 pmKIX - BOS
3 stops39h 01mMultiple Airlines
Deal found 4/14$1,129
This Cheapflightsfares deal was found by Cheapflights users on 4/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/196:00 amBOS - KIX
1 stop19h 50mANA
mar. 11/46:30 pmKIX - BOS
1 stop17h 10mANA
Deal found 4/14$1,186
This United deal was found by Cheapflights users on 4/14. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/193:30 pmBOS - KIX
2 stops34h 20mUnited Airlines
mar. 11/46:30 pmKIX - BOS
3 stops25h 28mUnited Airlines
Deal found 4/14$1,224
This Gurufare deal was found by Cheapflights users on 4/14. 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.
sáb. 11/112:00 pmBOS - KIX
1 stop20h 00mKorean Air
lun. 11/106:10 pmKIX - BOS
1 stop28h 30mKorean Air
Deal found 4/14$1,237
This FlightHub deal was found by Cheapflights users on 4/14. 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.
jue. 8/289:35 pmBOS - KIX
1 stop32h 25mTurkish Airlines
mar. 9/910:25 pmKIX - BOS
1 stop34h 15mTurkish Airlines
Deal found 4/14$1,321
This Cheapflightsfares deal was found by Cheapflights users on 4/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/28:20 amBOS - KIX
1 stop21h 25mJapan Airlines
mar. 9/97:40 amKIX - BOS
1 stop23h 25mJapan Airlines
Deal found 4/14$1,363
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/198:00 amBOS - KIX
1 stop21h 45mAlaska Airlines
mié. 5/288:45 pmKIX - BOS
1 stop22h 15mAlaska Airlines
Deal found 4/14$1,433
This KAYAK deal was found by Cheapflights users on 4/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/76:40 pmBOS - KIX
3 stops62h 20mHainan Airlines
vie. 5/162:30 pmKIX - BOS
2 stops63h 10mHainan Airlines
Deal found 4/14$1,443
This Lufthansa deal was found by Cheapflights users on 4/14. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/288:40 pmBOS - KIX
1 stop21h 35mLufthansa
mar. 1/139:55 amKIX - BOS
1 stop46h 40mLufthansa
Deal found 4/14$1,486
This Gurufare deal was found by Cheapflights users on 4/14. 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.
dom. 10/194:45 pmBOS - KIX
3 stops34h 25mSingapore Airlines
mar. 11/44:50 pmKIX - BOS
3 stops38h 35mSingapore Airlines
Deal found 4/14$1,499

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 abril 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

lun. 5/12

4:30 pm-11:40 am

1 stop30h 10m

Osaka Kansai Intl

lun. 5/19

8:55 pm-10:56 pm

3 stops39h 01m

$1,129

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

lun. 7/7

5:50 am-4:25 pm

2 stops21h 35m

Osaka Kansai Intl

vie. 7/11

6:05 pm-9:55 am

1 stop28h 50m

$1,137

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

mar. 5/6

1:40 am-6:10 pm

1 stop27h 30m

Osaka Kansai Intl

sáb. 5/17

5:45 pm-11:00 pm

1 stop42h 15m

$1,272

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

lun. 5/19

8:00 am-6:45 pm

1 stop21h 45m

Osaka Kansai Intl

mié. 5/28

8:45 pm-6:00 am

1 stop22h 15m

$1,433

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

mié. 5/7

6:40 pm-10:00 pm

3 stops62h 20m

Osaka Kansai Intl

vie. 5/16

2:30 pm-4:40 pm

2 stops63h 10m

$1,443

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

mié. 5/7

6:05 am-2:50 pm

1 stop19h 45m

Osaka Kansai Intl

mar. 5/13

4:50 pm-10:20 pm

1 stop18h 30m

$1,475

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

lun. 4/28

6:00 am-2:50 pm

1 stop19h 50m

Osaka Kansai Intl

lun. 5/5

4:50 pm-6:13 am

1 stop26h 23m

$1,505

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

lun. 5/12

9:35 pm-7:00 pm

1 stop32h 25m

Osaka Kansai Intl

lun. 5/19

10:25 pm-7:40 pm

1 stop34h 15m

$1,518

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

jue. 5/8

5:45 am-9:00 pm

2 stops26h 15m

Osaka Kansai Intl

mié. 5/14

9:05 am-12:33 am

2 stops28h 28m

$1,527

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

jue. 5/8

12:55 pm-9:00 pm

1 stop19h 05m

Osaka Kansai Intl

jue. 5/15

9:05 am-10:20 am

1 stop38h 15m

$1,534

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Boston-Osaka Kansai Intl Airport flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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

How far ahead should I book a flight from Boston to Osaka Kansai Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Kansai Intl. Price data was last updated on April 11, 2025.

The price you pay for your flight from Boston to Osaka Kansai Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 62 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 $898). Flying from Boston to Osaka Kansai Intl Airport in December is currently the most expensive (average of $1,350). 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 abril 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.

Rainfall in Kansai Intl by month

Plan your trip to Kansai Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Osaka Kansai Intl Airport ranges from 1.6 - 7.9 inches per month. June is typically the wettest month, when rainfall can reach 7.9 in. January is typically the driest time to visit Osaka Kansai Intl Airport when rainfall is around 1.6 in.

Temperature in Kansai Intl by month

Plan your trip to Kansai Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Osaka Kansai Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

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 abril 15, 2025.
Korean Air
8.4
Very good
1,063 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Comfort

8.3

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,063 reviews
Korean Air
8.4
Very good
1,063 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Comfort

8.3

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Japan Airlines
8.3
Very good
1,440 reviews
Korean Air
8.4
Very good
1,063 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Comfort

8.3

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
ANA
8.3
Very good
841 reviews
Korean Air
8.4
Very good
1,063 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Comfort

8.3

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Asiana Airlines
8.2
Very good
438 reviews
Korean Air
8.4
Very good
1,063 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Comfort

8.3

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Hainan Airlines
8.1
Very good
37 reviews
Korean Air
8.4
Very good
1,063 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Comfort

8.3

Overall

8.4

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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 6 different airlines.

  • What are the cheapest airlines flying from Boston to Osaka Kansai Intl Airport round-trip?

    Flying on Cathay Pacific is currently your cheapest option to Osaka Kansai Intl Airport, with prices starting at $1,112. Additional round-trip tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at $1,121 and $1,257, respectively. Cathay Pacific is currently priced 15% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Boston to Osaka Kansai Intl Airport one-way?

    To fly one-way, consider booking your trip with Cathay Pacific, which is currently one of the cheapest options available, starting at $472. Etihad Airways flights start at $539 while deals on Hainan Airlines start at $548 one-way.

  • 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 $898). Flying from Boston to Osaka Kansai Intl Airport in December is currently the most expensive (average of $1,350). 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

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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 6 airlines flying from Boston to Kansai Intl

Discover the top 6 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 abril 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Cathay PacificCheapest$867Average$1,125FlexibilityNo cancel feeOn-time72%
DeltaCheapest$867Average$968FlexibilityNo cancel feeOn-timeN/A
ANACheapest$979Average$1,303FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$1,051Average$1,443FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$1,192Average$1,476FlexibilityNo cancel feeOn-time67%
Japan AirlinesCheapest$1,239Average$1,295FlexibilityNo cancel feeOn-time79%

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