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BOS - KIX

$533 Find Cheap Flights from Boston to Osaka Kansai Intl - Compare and Save

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Everything you should know

Cheapest round-trip
$944
Typical prices: $1,095-$1,558
Multiple Airlines
Wed 1/17Mon 1/29
BOS - KIX • 2 stops
Cheapest one-way
$533
Typical prices: $567-$853
Multiple Airlines
Fri 11/9
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)
Insights
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

Sun, Jan 17 - Fri, Jan 29
Multiple Airlines Logo
5:30 am - 8:25 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
24h 55m2 stops Montreal Pierre Elliott Trudeau Intl Tokyo Narita
Multiple Airlines Logo
7:25 am - 2:18 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
44h 53m2 stops Tokyo Narita Toronto Pearson Intl
$944Multiple Airlines
Sun, Jan 17 - Fri, Jan 29
Multiple Airlines Logo
5:30 am - 8:25 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
24h 55m2 stops Montreal Pierre Elliott Trudeau Intl Tokyo Narita
Multiple Airlines Logo
7:25 am - 2:18 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
44h 53m2 stops Tokyo Narita Toronto Pearson Intl
$952Multiple Airlines
Fri, Feb 19 - Sun, Feb 28
Multiple Airlines Logo
3:30 pm - 5:40 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
60h 10m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
Multiple Airlines Logo
9:00 pm - 9:25 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
38h 25m2 stops Tokyo Haneda Montreal Pierre Elliott Trudeau Intl
$966Multiple Airlines
Mon, Jan 11 - Thu, Jan 14
ANA Logo
1:30 pm - 7:30 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
40h 00m2 stops Chicago O'Hare Intl Tokyo Narita
ANA Logo
9:45 am - 6:49 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
23h 04m2 stops Tokyo Haneda Washington, D.C. Dulles Intl
$1,026ANA
Mon, Jan 11 - Thu, Jan 14
United Airlines Logo
9:30 am - 4:45 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
41h 15m2 stops Washington, D.C. Dulles Intl San Francisco
United Airlines Logo
3:20 pm - 11:49 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
22h 29m3 stops Tokyo Haneda San Francisco Washington, D.C. Dulles Intl
$1,030United Airlines
Mon, Jan 11 - Thu, Jan 14
United Airlines Logo
12:00 pm - 4:45 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
38h 45m3 stops Newark Washington, D.C. Dulles Intl San Francisco
United Airlines Logo
3:20 pm - 11:49 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
22h 29m3 stops Tokyo Haneda San Francisco Washington, D.C. Dulles Intl
$1,030United Airlines
Tue, Nov 17 - Wed, Dec 2
ANA Logo
6:00 am - 10:20 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
26h 20m2 stops Chicago O'Hare Intl Tokyo Haneda
ANA Logo
9:00 pm - 2:32 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
31h 32m2 stops Tokyo Haneda Washington, D.C. Dulles Intl
$1,133ANA
Wed, Oct 28 - Wed, Nov 4
ANA Logo
7:31 am - 10:20 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
25h 49m2 stops Chicago O'Hare Intl Tokyo Haneda
ANA Logo
3:20 pm - 9:24 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
20h 04m2 stops Tokyo Haneda San Francisco
$1,197ANA
Mon, Nov 16 - Tue, Dec 1
Cathay Pacific Logo
12:30 am - 6:20 amBOS  Boston Logan Intl-KIX Osaka Kansai Intl
39h 50m1 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
$1,380Cathay Pacific
Mon, Feb 22 - Tue, Mar 16
Cathay Pacific Logo
12:30 am - 9:05 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
30h 35m1 stop Hong Kong Intl
Cathay Pacific Logo
9:50 am - 11:00 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
26h 10m1 stop Hong Kong Intl
$1,389Cathay 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 with more confidence.

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

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

What’s 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 flights 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.

Find deals

Key details for Boston to Osaka Kansai Intl Airport flights

Low season

December

Cheapest flight

$533
Beat the crowds with an average 34% drop in travelers.
The most popular month to fly with an average 32% increase in travelers.
One-way 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 answers about this route, including flight times, airports, airlines and booking tips.

  • 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

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

    A nonstop flight from Boston to Osaka Kansai Intl Airport takes 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 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.

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

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

  • 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 $1,177, which is 75% above the typical average for this route.

  • 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

  • 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).

  • 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

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

    Yes. Flexible dates can save you up to 25% on flights from Boston to Osaka Kansai Intl Airport. Sunday is the cheapest departure day at $1,115 round-trip on average, while Saturday is the most expensive at $1,483, a difference of $368.

    Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

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

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

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 are flexible, aim for a Sunday departure and avoid flying on Saturday. On this route, Sunday flights average $1,115, about $368 less than Saturday fares (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

Complete your trip to Osaka with a hotel stay or car rental

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