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Kansai Intl

$488+ 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — KIX
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 October, 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 July 3, 2025.

Round-trip from

$765
(Air Canada)

One-way from

$488
(Air Canada)

Popular in

June

Cheapest in

September

Average price

$1,397
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. 15% potential increase in price ($227 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This Air Canada deal was found by Cheapflights users on 7/1. 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.
Tue 8/266:40 pmBOS - KIX
2 stops32h 45mAir Canada
Tue 9/166:05 pmKIX - BOS
2 stops28h 25mAir Canada
Deal found 7/1$765
This Air Canada deal was found by Cheapflights users on 7/1. 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.
Sat 11/13:40 pmBOS - KIX
2 stops37h 00mMultiple Airlines
Tue 11/117:25 amKIX - BOS
2 stops28h 02mMultiple Airlines
Deal found 7/1$878
This Gurufare deal was found by Cheapflights users on 7/1. 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.
Mon 8/251:40 amBOS - KIX
1 stop30h 35mCathay Pacific
Tue 9/169:10 amKIX - BOS
1 stop26h 50mCathay Pacific
Deal found 7/1$942

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 July 3, 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

Tue 8/26

6:40 pm-4:25 pm

2 stops32h 45m

Osaka Kansai Intl

Tue 9/16

6:05 pm-9:30 am

2 stops28h 25m

$765

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 8/25

1:40 am-9:15 pm

1 stop30h 35m

Osaka Kansai Intl

Tue 9/16

9:10 am-11:00 pm

1 stop26h 50m

$942

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 7/28

5:50 am-4:25 pm

2 stops21h 35m

$488

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 7/30

6:00 am-7:30 pm

3 stops48h 30m

$511

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 7/30

4:30 pm-11:40 am

1 stop30h 10m

$539

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 7/8

8:00 am-6:45 pm

1 stop21h 45m

$582

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 7/9

7:25 am-9:00 pm

2 stops24h 35m

$589

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 7/6

12:55 pm-9:00 pm

1 stop19h 05m

$708

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 7/8

6:00 am-2:50 pm

1 stop19h 50m

$725

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 9/1

1:40 am-6:40 am

1 stop40h 00m

$859

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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 June 27, 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 $884). Flying from Boston to Osaka Kansai Intl Airport in June is currently the most expensive (average of $1,319). 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 July 3, 2025.

When flying from Boston to Osaka Kansai Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 45% versus a flight in the afternoon.

Reviews of airlines servicing Kansai Intl

Get insights into the airlines that provide service to Kansai Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kansai Intl. Reviews last updated July 3, 2025.
Get a feel of what it's like to fly with Korean Air, China Airlines, and Alaska 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.
Korean Air
8.4
Very good
1,101 reviews

Boarding

8.5

Crew

8.7

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Korean Air
8.4
Very good
1,101 reviews
Korean Air
8.4
Very good
1,101 reviews

Boarding

8.5

Crew

8.7

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
China Airlines
8.3
Very good
744 reviews
Korean Air
8.4
Very good
1,101 reviews

Boarding

8.5

Crew

8.7

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Alaska Airlines
8.0
Very good
10,000 reviews
Korean Air
8.4
Very good
1,101 reviews

Boarding

8.5

Crew

8.7

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Delta
8.0
Very good
7,982 reviews
Korean Air
8.4
Very good
1,101 reviews

Boarding

8.5

Crew

8.7

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Hawaiian Airlines
7.8
Good
2,545 reviews
Korean Air
8.4
Very good
1,101 reviews

Boarding

8.5

Crew

8.7

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

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 Air Canada is currently your cheapest option to Osaka Kansai Intl Airport, with prices starting at $765. Another option worth looking into is Cathay Pacific, starting at $942 round trip. Air Canada is currently priced 40% 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 Air Canada, which is currently one of the cheapest options available, starting at $488. Etihad Airways flights start at $539 while deals on Alaska Airlines start at $582 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 $884). Flying from Boston to Osaka Kansai Intl Airport in June is currently the most expensive (average of $1,319). 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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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$762Average$1,381FlexibilityNo cancel feeOn-time67%
DeltaCheapest$807Average$925FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$867Average$1,111FlexibilityNo cancel feeOn-time72%
ANACheapest$979Average$1,303FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$1,056Average$1,443FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$1,239Average$1,290FlexibilityNo cancel feeOn-time79%

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