BOS - KIX

$512 Find Cheap Flights from Boston to Osaka Kansai Intl - Compare and Save

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Everything you should know

Cheapest round-trip
$857
Typical prices: $1,095-$1,558
Air Canada
Thu 2/22Thu 3/1
BOS - KIX • 2 stops
Cheapest one-way
$518
Typical prices: $567-$853
Multiple Airlines
Wed 11/28
BOS - KIX • 3 stops
Nonstop flights
Not available
There are currently no direct flights between Boston and Osaka Kansai Intl Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
21 weeks
in advance
Our data shows that travelers who book at least 21 weeks in advance save around 63% compared to booking last minute.
Insights
Insights
When to travel
January
Cheapest • 27% price drop
April
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Honolulu (HNL)
Cheapest • Avg $1,213 (round-trip)
Tokyo Narita (NRT)
Shortest trip • 17h 53m (one-way)
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Insights
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We hope you love your trip to Osaka Kansai Intl Airport!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Kansai Intl (BOS-KIX)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Kansai Intl

Mon, Feb 22 - Mon, Mar 1
Air Canada Logo
6:35 pm - 5:40 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
33h 05m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
Air Canada Logo
7:25 pm - 9:45 amKIX  Osaka Kansai Intl-BOS Boston Logan Intl
28h 20m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$856Air Canada
Mon, Feb 22 - Mon, Mar 1
Air Canada Logo
6:35 pm - 5:40 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
33h 05m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
Air Canada Logo
7:25 pm - 9:45 amKIX  Osaka Kansai Intl-BOS Boston Logan Intl
28h 20m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$857Air Canada
Mon, Feb 22 - Mon, Mar 1
Air Canada Logo
6:35 pm - 5:40 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
33h 05m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
Air Canada Logo
7:25 pm - 9:45 amKIX  Osaka Kansai Intl-BOS Boston Logan Intl
28h 20m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$913Air Canada
Wed, Jan 27 - Thu, Feb 4
ANA Logo
9:12 am - 9:50 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
22h 38m2 stops Chicago O'Hare Intl Tokyo Haneda
ANA Logo
6:45 am - 12:48 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
20h 03m2 stops Tokyo Haneda Chicago O'Hare Intl
$1,022ANA
Thu, Jan 28 - Thu, Feb 4
ANA Logo
5:45 am - 9:50 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
26h 05m2 stops Washington, D.C. Dulles Intl Tokyo Haneda
ANA Logo
3:20 pm - 9:50 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
20h 30m2 stops Tokyo Haneda Chicago O'Hare Intl
$1,022ANA
Thu, Feb 11 - Sun, Feb 21
ANA Logo
5:30 am - 4:45 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
21h 15m1 stop San Francisco
ANA Logo
3:20 pm - 12:47 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
35h 27m2 stops Tokyo Haneda Chicago O'Hare Intl
$1,025ANA
Mon, Jan 25 - Wed, Feb 3
United Airlines Logo
3:33 pm - 4:45 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
35h 12m2 stops Newark San Francisco
United Airlines Logo
6:35 pm - 11:49 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
19h 14m2 stops San Francisco Washington, D.C. Dulles Intl
$1,027United Airlines
Mon, Jan 25 - Wed, Feb 3
United Airlines Logo
8:30 pm - 4:45 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
30h 15m2 stops Newark San Francisco
United Airlines Logo
6:35 pm - 8:00 amKIX  Osaka Kansai Intl-BOS Boston Logan Intl
27h 25m1 stop San Francisco
$1,027United Airlines
Sun, Feb 21 - Mon, Mar 1
Cathay Pacific Logo
12:30 am - 12:45 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
22h 15m1 stop Hong Kong Intl
Cathay Pacific Logo
2:00 pm - 10:00 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
22h 00m1 stop Hong Kong Intl
$1,385Cathay Pacific
Sun, Feb 21 - Mon, Mar 1
Cathay Pacific Logo
12:30 am - 5:40 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
27h 10m1 stop Hong Kong Intl
Cathay Pacific Logo
2:00 pm - 10:00 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
22h 00m1 stop Hong Kong Intl
$1,390Cathay Pacific
Booking Insights

Price, demand and travel trends for Boston to Osaka Kansai Intl Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Boston to Osaka Kansai Intl Airport with more confidence.

How much is a round-trip flight from Boston to Osaka Kansai Intl Airport?

Round-trip flights from Boston to Osaka Kansai Intl Airport start at $857. Prices are below average for this route right now, with typical round-trip fares ranging from $1,095 to $1,558. The lowest price found in the past 5 days was $857 on Air Canada.

What's the cheapest day of the week to fly from Boston to Osaka Kansai Intl Airport?

Sunday is the cheapest day of the week to fly from Boston to Osaka Kansai Intl Airport, it is 15% cheaper than the average day. Saturday is the most expensive day with flight prices 13% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Boston to Osaka Kansai Intl Airport?

  • January is the cheapest month to fly from Boston to Osaka Kansai Intl Airport at $959 round-trip.
  • August ($1,512) and April ($1,510) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 57% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Boston to Osaka Kansai Intl Airport the cheapest?

Flights from Boston to Osaka Kansai Intl Airport are cheapest 21 weeks before departure. Booking in this window typically costs about 63% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Boston to Osaka Kansai Intl Airport flights

Low season

December

Cheapest flight

$518
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly with an average 15% increase in price.
Flight from Boston to Osaka Kansai Intl Airport

When to book flights from Boston to Kansai Intl

Are your dates flexible? Find out the best times to travel from Boston to Kansai Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Boston to Osaka Kansai Intl Airport flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Boston to Osaka Kansai Intl Airport?

    Flights from Boston to Osaka Kansai Intl Airport usually depart from Boston Logan Intl (BOS) and arrive at Osaka Kansai Intl (KIX).

  • What cabin classes can I book on flights from Boston to Osaka Kansai Intl Airport?

    Three cabin classes are available on flights from Boston to Osaka Kansai Intl Airport:

    • Economy Class
    • Premium Economy Class
    • Business Class

  • Which airports do connecting flights from Boston to Osaka Kansai Intl Airport pass through?

    One-stop flights from Boston to Osaka Kansai Intl Airport most commonly connect through:

    • Hong Kong Intl (HKG) - 45% of one-stop connections
    • San Francisco (SFO) - 40% of one-stop connections
    • Incheon Intl (ICN) - 6% of one-stop connections
    • Toronto Pearson Intl (YYZ) - 4% of one-stop connections

    Hong Kong Intl (HKG) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Boston to Osaka Kansai Intl Airport?

    On the Boston to Osaka Kansai Intl Airport route, being flexible with your departure day can save you up to 25%. Sunday is the cheapest day at $1,115 round-trip on average, while Saturday is the most expensive at $1,483: a $368 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • What popular places can I visit in Osaka Kansai Intl Airport?

    Some of the most popular sights in Osaka Kansai Intl Airport are Namba Train Station, Universal Studios Japan and Dotonbori Glico Man Sign. These are among the most viewed places in Osaka Kansai Intl Airport on KAYAK.

  • How expensive are last-minute Boston to Osaka Kansai Intl Airport flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 88% above the route average of $1,309. Book 21 weeks before departure for the lowest fares.

  • How long is a flight from Boston to Osaka Kansai Intl Airport?

    A nonstop flight from Boston to Osaka Kansai Intl Airport takes 0h 00m, covering 6,872 miles.

  • Do I need a passport to fly from Boston to Osaka Kansai Intl Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Boston to Osaka Kansai Intl Airport looking right now?

    One-way fares from Boston to Osaka Kansai Intl Airport are currently higher than usual. Average one-way flight prices are about $807, which is 20% above the typical average for this route.

  • How much time can I save by choosing a different layover airport from Boston to Osaka Kansai Intl Airport?

    Flying via Tokyo Narita (NRT) gives the shortest average 1-stop total travel time at 17h 53m, compared with 19h 34m via San Francisco (SFO) and 19h 36m via Toronto Pearson Intl (YYZ).

  • What is the time difference between Boston and Osaka Kansai Intl Airport?

    Osaka Kansai Intl Airport is 13 hours ahead of Boston (Japan Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Osaka Kansai Intl Airport (KIX)?

    Osaka Kansai Intl Airport (KIX) hosts 5 major car rental companies, with daily rates starting from around $11 for economy cars. Top options include:
    • Yesaway
    • CG Car Rental
    • KuMa Rental Car
    • IX Rental
    • HM Rent a Car

  • How much should I expect to pay for a Boston to Osaka Kansai Intl Airport flight?

    Round-trip flights from Boston to Osaka Kansai Intl Airport range from $1,095 to $1,558, with an average of $1,309 over the past 12 months. Anything below $1,095 counts as a good deal.

Your guide to booking Boston to Osaka Kansai Intl Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Sunday departure instead of Saturday. On this route, Sunday flights average $1,115 - about $368 less than Saturday (25% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 21 weeks before you fly. On this route, that window historically saves about 63% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Boston to Osaka Kansai Intl Airport trip for January. Fares historically average $959 round-trip in that month - typically $553 less than the most expensive month, which is August (based on the last 12 months).

More options for your flight from Boston to Kansai Intl

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