BOS - KIX

$538 Find Cheap Flights from Boston to Osaka Kansai Intl - Compare and Save

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Everything you should know

Cheapest round-trip
$767
Typical prices: $1,162-$1,502
Air Canada
Fri 2/2Sun 2/11
BOS - KIX • 2 stops
Cheapest one-way
$538
Typical prices: $587-$947
Multiple Airlines
Thu 1/18
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
18 weeks
in advance
Our data shows that travelers who book at least 18 weeks in advance save around 49% compared to booking last minute.
Insights
Insights
When to travel
January
Cheapest • 29% price drop
April
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Beijing Capital (PEK)
Cheapest • Avg $920 (round-trip)
Tokyo Narita (NRT)
Shortest trip • 17h 42m (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

Tue, Feb 2 - Thu, Feb 11
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 - 9:48 amKIX  Osaka Kansai Intl-BOS Boston Logan Intl
28h 23m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$767Air Canada
Sun, Jan 17 - Fri, Jan 29
ANA Logo
1:24 pm - 2:40 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
35h 16m2 stops Chicago O'Hare Intl Tokyo Haneda
ANA Logo
7:05 am - 2:30 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
21h 25m2 stops Tokyo Haneda Washington, D.C. Dulles Intl
$838ANA
Wed, Jan 20 - Thu, Feb 4
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
9:45 am - 7:08 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
23h 23m2 stops Tokyo Haneda Washington, D.C. Dulles Intl
$838ANA
Sun, Jan 17 - Fri, Jan 29
United Airlines Logo
6:39 pm - 7:30 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
34h 51m2 stops Newark Tokyo Haneda
United Airlines Logo
6:35 pm - 8:01 amKIX  Osaka Kansai Intl-BOS Boston Logan Intl
27h 26m1 stop San Francisco
$846United Airlines
Sun, Jan 17 - Fri, Jan 29
United Airlines Logo
8:00 pm - 7:30 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
33h 30m2 stops Newark Tokyo Haneda
United Airlines Logo
6:35 pm - 8:01 amKIX  Osaka Kansai Intl-BOS Boston Logan Intl
27h 26m1 stop San Francisco
$846United Airlines
Mon, Jan 11 - Mon, Jan 25
Delta Logo
6:10 am - 8:45 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
24h 35m2 stops Salt Lake City Incheon Intl
Delta Logo
6:10 pm - 4:35 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
36h 25m2 stops Incheon Intl Detroit Metropolitan Wayne County
$858Delta
Wed, Jan 20 - Thu, Feb 4
Japan Airlines Logo
12:00 pm - 8:55 amBOS  Boston Logan Intl-KIX Osaka Kansai Intl
30h 55m1 stop Tokyo Narita
Japan Airlines Logo
7:25 am - 5:35 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
24h 10m1 stop Tokyo Narita
$871Japan Airlines
Wed, Jan 20 - Thu, Feb 4
Japan Airlines Logo
12:00 pm - 8:25 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
18h 25m1 stop Tokyo Narita
Japan Airlines Logo
7:25 am - 5:35 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
24h 10m1 stop Tokyo Narita
$881Japan Airlines
Sun, Apr 4 - Wed, Apr 28
Cathay Pacific Logo
1:45 am - 9:15 pmBOS  Boston Logan Intl-KIX Osaka Kansai Intl
30h 30m1 stop Hong Kong Intl
Cathay Pacific Logo
9:45 am - 11:05 pmKIX  Osaka Kansai Intl-BOS Boston Logan Intl
26h 20m1 stop Hong Kong Intl
$1,409Cathay Pacific
Sun, Feb 14 - Wed, Mar 10
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
$1,409Cathay 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.

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

Round-trip flights from Boston to Osaka Kansai Intl Airport typically range from $1,162 to $1,502. The lowest price found in the past 5 days was $767, on Air Canada.

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 12% cheaper than the average day, while Saturday is the most expensive, with prices 8% 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 $923 round-trip.
•December ($2,963) and October ($1,559) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 221% 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 18 weeks before departure. Booking in this window typically costs about 49% 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

November

Cheapest flight

$538
Beat the crowds with an average 50% drop in travelers.
The most popular month to fly with an average 72% 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 $1,162 to $1,502, with an average of $1,300 over the past 12 months. Anything below $1,162 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 49% above the $1,300 route average. Book 18 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 in line with typical prices for this route. Average one-way fares are about $738.

  • 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 averaging $36 for economy cars. Top options include:

    • Yesaway
    • IX Rental
    • HM Rent a Car
    • CG Car Rental
    • KuMa Rental 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) - 52% of one-stop connections
    • San Francisco (SFO) - 25% of one-stop connections
    • Tokyo Narita (NRT) - 8% of one-stop connections
    • Toronto Pearson Intl (YYZ) - 6% 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 19% on flights from Boston to Osaka Kansai Intl Airport. Sunday is the cheapest departure day at $1,151 round-trip on average, while Saturday is the most expensive at $1,415, a difference of $264.

    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 42m, compared with 19h 35m via Toronto Pearson Intl (YYZ) and 19h 44m via San Francisco (SFO).

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

    Osaka Kansai Intl Airport is 14 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 $1,151, about $264 less than Saturday fares (19% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 18 weeks before you fly. On this route, that window historically saves about 49% 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 $923 round-trip in that month - typically $2,040 less than the most expensive month, which is December (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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