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Cheap flights from Boston to Osaka from $532

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Osaka departing on 9/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Boston to Osaka

Cheap round-trip flights

Enter your travel dates to find the best prices.
Hainan Airlines Logo
6:40 pm - 12:45 pm
BOS
-
KIX
29h 05m
2 stops
Hainan Airlines Logo
2:20 pm - 4:40 pm
KIX
-
BOS
39h 20m
1 stop
$914Hainan Airlines
Fri, Sep 4 - Sat, Sep 19
Hainan Airlines Logo
6:40 pm - 12:45 pm
BOS
-
KIX
29h 05m
2 stops
Hainan Airlines Logo
2:20 pm - 4:40 pm
KIX
-
BOS
39h 20m
1 stop
$934Hainan Airlines
Wed, Sep 2 - Sat, Sep 19
Hainan Airlines Logo
6:40 pm - 12:45 pm
BOS
-
KIX
29h 05m
2 stops
Hainan Airlines Logo
2:20 pm - 4:40 pm
KIX
-
BOS
39h 20m
1 stop
$957Hainan Airlines
Wed, Sep 2 - Sat, Sep 19
Hainan Airlines Logo
6:40 pm - 12:45 pm
BOS
-
KIX
29h 05m
2 stops
Hainan Airlines Logo
2:20 pm - 4:40 pm
KIX
-
BOS
39h 20m
1 stop
$987Hainan Airlines
Wed, Oct 7 - Sat, Oct 17
Hainan Airlines Logo
6:40 pm - 12:45 pm
BOS
-
KIX
29h 05m
1 stop
Hainan Airlines Logo
2:20 pm - 4:40 pm
KIX
-
BOS
39h 20m
1 stop
$995Hainan Airlines
Fri, Aug 28 - Sat, Sep 19
Multiple Airlines Logo
6:40 pm - 12:45 pm
BOS
-
KIX
29h 05m
2 stops
Multiple Airlines Logo
7:45 am - 8:44 am
KIX
-
BOS
37h 59m
3 stops
$1,089Multiple Airlines
Wed, Sep 16 - Mon, Sep 28
Multiple Airlines Logo
6:40 pm - 12:45 pm
BOS
-
KIX
29h 05m
2 stops
Multiple Airlines Logo
7:45 am - 8:44 am
KIX
-
BOS
37h 59m
3 stops
$1,090Multiple Airlines
Wed, Sep 16 - Mon, Sep 28
Multiple Airlines Logo
6:40 pm - 12:45 pm
BOS
-
KIX
29h 05m
2 stops
Multiple Airlines Logo
7:35 am - 5:40 pm
KIX
-
BOS
47h 05m
3 stops
$1,119Multiple Airlines
Wed, Sep 16 - Wed, Sep 23
Multiple Airlines Logo
6:40 pm - 12:45 pm
BOS
-
KIX
29h 05m
2 stops
Multiple Airlines Logo
7:35 am - 5:40 pm
KIX
-
BOS
47h 05m
3 stops
$1,120Multiple Airlines
Wed, Sep 16 - Wed, Sep 23
Hainan Airlines Logo
6:40 pm - 12:45 pm
BOS
-
KIX
29h 05m
2 stops
Hainan Airlines Logo
2:20 pm - 4:40 pm
KIX
-
BOS
39h 20m
1 stop
$1,132Hainan Airlines
Fri, Oct 9 - Sat, Oct 17

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Hainan Airlines flights from Boston to Osaka Kansai Intl Airport

Our best Hainan Airlines deals on Boston to Osaka Kansai Intl Airport flight tickets
Hainan Airlines
Sep 4
BOS6:40 pmBoston Logan Intl
29h 05m
2 stops
KIX12:45 pmOsaka Kansai Intl
Sep 19
KIX2:20 pmOsaka Kansai Intl
39h 20m
1 stop
BOS4:40 pmBoston Logan Intl
$914
Hainan Airlines
Sep 2
BOS6:40 pmBoston Logan Intl
29h 05m
2 stops
KIX12:45 pmOsaka Kansai Intl
Sep 19
KIX2:20 pmOsaka Kansai Intl
39h 20m
1 stop
BOS4:40 pmBoston Logan Intl
$934
Hainan Airlines
Sep 4
BOS6:40 pmBoston Logan Intl
29h 05m
2 stops
KIX12:45 pmOsaka Kansai Intl
Sep 19
KIX2:20 pmOsaka Kansai Intl
39h 20m
1 stop
BOS4:40 pmBoston Logan Intl
$937

Cathay Pacific flights from Boston to Osaka Kansai Intl Airport

Our best Cathay Pacific deals on Boston to Osaka Kansai Intl Airport flight tickets
Cathay Pacific
Sep 15
BOS1:45 amBoston Logan Intl
30h 30m
1 stop
KIX9:15 pmOsaka Kansai Intl
Sep 28
KIX9:45 amOsaka Kansai Intl
26h 20m
1 stop
BOS11:05 pmBoston Logan Intl
$1,178
Cathay Pacific
Sep 15
BOS1:45 amBoston Logan Intl
30h 30m
1 stop
KIX9:15 pmOsaka Kansai Intl
Sep 28
KIX9:05 amOsaka Kansai Intl
27h 00m
1 stop
BOS11:05 pmBoston Logan Intl
$1,180
Cathay Pacific
Sep 15
BOS1:45 amBoston Logan Intl
24h 25m
1 stop
KIX3:10 pmOsaka Kansai Intl
Sep 23
KIX2:25 pmOsaka Kansai Intl
21h 40m
1 stop
BOS11:05 pmBoston Logan Intl
$1,184

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Osaka Kansai Intl Airport 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, momondo users made 832,500 searches. Data last updated May 4, 2026.
Use the filters below to find and compare flights from Boston to Osaka Kansai Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Fri 9/4

6:40 pm-12:45 pm

2 stops29h 05m

Osaka Kansai Intl

Sat 9/19

2:20 pm-4:40 pm

1 stop39h 20m

$914

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 9/2

6:40 pm-12:45 pm

2 stops29h 05m

Osaka Kansai Intl

Sat 9/19

2:20 pm-4:40 pm

1 stop39h 20m

$934

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 9/2

6:40 pm-12:45 pm

2 stops29h 05m

Osaka Kansai Intl

Sat 9/19

2:20 pm-4:40 pm

1 stop39h 20m

$957

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 10/7

6:40 pm-12:45 pm

2 stops29h 05m

Osaka Kansai Intl

Sat 10/17

2:20 pm-4:40 pm

1 stop39h 20m

$987

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Fri 8/28

6:40 pm-12:45 pm

1 stop29h 05m

Osaka Kansai Intl

Sat 9/19

2:20 pm-4:40 pm

1 stop39h 20m

$995
Quickest round-trip

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 9/16

6:40 pm-12:45 pm

2 stops29h 05m

Osaka Kansai Intl

Mon 9/28

7:45 am-8:44 am

3 stops37h 59m

$1,089

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 9/16

6:40 pm-12:45 pm

2 stops29h 05m

Osaka Kansai Intl

Mon 9/28

7:45 am-8:44 am

3 stops37h 59m

$1,090

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 9/16

6:40 pm-12:45 pm

2 stops29h 05m

Osaka Kansai Intl

Wed 9/23

7:35 am-5:40 pm

3 stops47h 05m

$1,119

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 9/16

6:40 pm-12:45 pm

2 stops29h 05m

Osaka Kansai Intl

Wed 9/23

7:35 am-5:40 pm

3 stops47h 05m

$1,120

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Fri 10/9

6:40 pm-12:45 pm

2 stops29h 05m

Osaka Kansai Intl

Sat 10/17

2:20 pm-4:40 pm

1 stop39h 20m

$1,132

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Osaka from

How to get the cheapest flight ticket from Boston to Osaka Kansai Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Boston and Osaka Kansai Intl Airport?

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

In general, February is the cheapest month to fly from Boston to Osaka Kansai Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $979. If you aren’t able to travel during the month of February, then book flights to Osaka Kansai Intl Airport from Boston during December instead. Flights to Osaka Kansai Intl Airport in December, while not as cheap as those in February, still average around $1,034.

Can stopping save me money on Boston to Osaka Kansai Intl Airport flights?

You could potentially save up to 27% on your flight if you consider stops on a Boston to Osaka Kansai Intl Airport flight.

When to book flights from Boston to Osaka Kansai Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Osaka Kansai Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Osaka Kansai Intl Airport (BOS to KIX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Osaka Kansai Intl Airport

Fastest flight time

22h 10m

Direct flights

None
The fastest flight from Boston to Osaka Kansai Intl Airport takes 22h 10m
There are no direct flights from Boston to Osaka Kansai Intl Airport. There are no popular flight routes from Boston to Osaka Kansai Intl Airport.
Search flight deals

Frequently asked questions about flying from Boston to Osaka Kansai Intl Airport

  • How far is Boston Logan Intl to Osaka Kansai Intl by plane?

    There are 6871.6 mi between Boston Logan Intl and Osaka Kansai Intl. 22h 10m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Osaka Kansai Intl Airport?

    Prices for flights from Boston Logan Intl Airport to Osaka Kansai Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Osaka Kansai Intl Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Osaka Kansai Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Osaka Kansai Intl Airport.

  • What documentation or ID do you need to fly to Osaka Kansai Intl Airport?

    The necessary travel and health documents for your Osaka Kansai Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Boston to Osaka Kansai Intl Airport?

Best airlines flying from Boston to Osaka Kansai Intl Airport

Compare and see reviews for airlines that fly from Boston to Osaka Kansai Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $787Free CancellationRating
7.1
10,995 reviews
Search Air Canada flights
Cathay PacificPriceFrom $833Free CancellationRating
7.6
1,312 reviews
Search Cathay Pacific flights
United AirlinesPriceFrom $979Free CancellationRating
7.4
9,680 reviews
Search United Airlines flights
ANAPriceFrom $1,034Free CancellationRating
8.3
1,205 reviews
Search ANA flights

Traveling to a place near Osaka?

Book flights to Osaka if you plan to visit one of these locations
Izumisano
Nara
Himeji
Nishinomiya

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Osaka?

Finding the right flight to Osaka from Boston is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Osaka quick and easy, saving you time and money.

Can I find flights from Boston to Osaka with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Boston to Osaka flights to just show those with flexible booking policies.

How can momondo help me find flights from Boston to Osaka?

Once you have performed a search for Boston to Osaka flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Boston to Osaka right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Osaka, momondo offers a useful price alert feature which will track prices for flights to Osaka from Boston and alert you when they change.

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