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Cheap flights from Boston to Osaka from $463

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 9/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Boston to Osaka

Cheap round-trip flights

Air Canada Logo
3:40 pm - 5:40 pmBOS-KIX
36h 00m2 stops
Air Canada Logo
7:25 pm - 9:32 amKIX-BOS
28h 07m2 stops
$883Air Canada
Find Deal
Tue, Nov 4 - Mon, Nov 10
Air Canada Logo
6:40 pm - 5:40 pmBOS-KIX
34h 00m2 stops
Air Canada Logo
7:25 pm - 9:32 amKIX-BOS
28h 07m2 stops
$927Air Canada
Find Deal
Sat, Nov 1 - Mon, Nov 10
Cathay Pacific Logo
1:40 am - 1:00 pmBOS-KIX
22h 20m1 stop
Cathay Pacific Logo
7:35 pm - 11:00 pmKIX-BOS
40h 25m1 stop
$938Cathay Pacific
Find Deal
Sun, Sep 14 - Wed, Oct 1
Cathay Pacific Logo
1:40 am - 1:00 pmBOS-KIX
22h 20m1 stop
Cathay Pacific Logo
10:00 am - 11:00 pmKIX-BOS
26h 00m1 stop
$941Cathay Pacific
Find Deal
Wed, Aug 27 - Thu, Sep 4
Cathay Pacific Logo
1:40 am - 3:15 pmBOS-KIX
24h 35m1 stop
Cathay Pacific Logo
9:10 am - 11:00 pmKIX-BOS
26h 50m1 stop
$942Cathay Pacific
Find Deal
Sun, Sep 14 - Mon, Sep 29
Cathay Pacific Logo
1:40 am - 1:00 pmBOS-KIX
22h 20m1 stop
Cathay Pacific Logo
7:35 pm - 11:00 pmKIX-BOS
40h 25m1 stop
$944Cathay Pacific
Find Deal
Sun, Sep 14 - Tue, Sep 30
Korean Air Logo
12:55 pm - 9:00 pmBOS-KIX
19h 05m1 stop
Korean Air Logo
6:10 pm - 10:10 amKIX-BOS
29h 00m1 stop
$1,006Korean Air
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Tue, Aug 26 - Tue, Sep 2
ANA Logo
5:30 am - 7:25 pmBOS-KIX
23h 55m2 stops
ANA Logo
6:35 pm - 9:38 pmKIX-BOS
17h 03m1 stop
$1,032ANA
Find Deal
Sun, Nov 9 - Fri, Nov 21
Logo
9:59 am - 4:55 pmBOS-KIX
41h 56m2 stops
Logo
7:10 pm - 10:10 amKIX-BOS
28h 00m1 stop
$1,033
Find Deal
Tue, Aug 26 - Tue, Sep 2
Korean Air Logo
12:00 pm - 9:00 pmBOS-KIX
20h 00m1 stop
Korean Air Logo
6:10 pm - 8:40 amKIX-BOS
28h 30m1 stop
$1,034Korean Air
Find Deal
Sat, Nov 1 - Mon, Nov 10

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 14
BOS1:40 amBoston Logan Intl
22h 20m
1 stop
KIX1:00 pmOsaka Kansai Intl
Oct 1
KIX7:35 pmOsaka Kansai Intl
40h 25m
1 stop
BOS11:00 pmBoston Logan Intl
$938
Find similar
Cathay Pacific
Aug 27
BOS1:40 amBoston Logan Intl
22h 20m
1 stop
KIX1:00 pmOsaka Kansai Intl
Sep 4
KIX10:00 amOsaka Kansai Intl
26h 00m
1 stop
BOS11:00 pmBoston Logan Intl
$941
Find similar
Cathay Pacific
Sep 14
BOS1:40 amBoston Logan Intl
24h 35m
1 stop
KIX3:15 pmOsaka Kansai Intl
Sep 29
KIX9:10 amOsaka Kansai Intl
26h 50m
1 stop
BOS11:00 pmBoston Logan Intl
$942
Find similar

Air Canada flights from Boston to Osaka Kansai Intl Airport

Our best Air Canada deals on Boston to Osaka Kansai Intl Airport flight tickets
Air Canada
Nov 4
BOS3:40 pmBoston Logan Intl
36h 00m
2 stops
KIX5:40 pmOsaka Kansai Intl
Nov 10
KIX7:25 pmOsaka Kansai Intl
28h 07m
2 stops
BOS9:32 amBoston Logan Intl
$883
Find similar
Air Canada
Nov 1
BOS6:40 pmBoston Logan Intl
34h 00m
2 stops
KIX5:40 pmOsaka Kansai Intl
Nov 10
KIX7:25 pmOsaka Kansai Intl
28h 07m
2 stops
BOS9:32 amBoston Logan Intl
$927
Find similar
Air Canada
Oct 20
BOS6:30 pmBoston Logan Intl
32h 55m
2 stops
KIX4:25 pmOsaka Kansai Intl
Oct 30
KIX7:25 pmOsaka Kansai Intl
32h 27m
2 stops
BOS2:52 pmBoston Logan Intl
$950
Find similar

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 July 31, 2025.
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

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 11/4

3:40 pm-5:40 pm

2 stops36h 00m

Osaka Kansai Intl

Mon 11/10

7:25 pm-9:32 am

2 stops28h 07m

$883

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sat 11/1

6:40 pm-5:40 pm

2 stops34h 00m

Osaka Kansai Intl

Mon 11/10

7:25 pm-9:32 am

2 stops28h 07m

$927

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 9/14

1:40 am-1:00 pm

1 stop22h 20m

Osaka Kansai Intl

Wed 10/1

7:35 pm-11:00 pm

1 stop40h 25m

$938

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 8/27

1:40 am-1:00 pm

1 stop22h 20m

Osaka Kansai Intl

Thu 9/4

10:00 am-11:00 pm

1 stop26h 00m

$941

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 9/14

1:40 am-3:15 pm

1 stop24h 35m

Osaka Kansai Intl

Mon 9/29

9:10 am-11:00 pm

1 stop26h 50m

$942

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 9/14

1:40 am-1:00 pm

1 stop22h 20m

Osaka Kansai Intl

Tue 9/30

7:35 pm-11:00 pm

1 stop40h 25m

$944

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 8/26

12:55 pm-9:00 pm

1 stop19h 05m

Osaka Kansai Intl

Tue 9/2

6:10 pm-10:10 am

1 stop29h 00m

$1,006

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 11/9

5:30 am-7:25 pm

2 stops23h 55m

Osaka Kansai Intl

Fri 11/21

6:35 pm-9:38 pm

1 stop17h 03m

$1,032

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 8/26

9:59 am-4:55 pm

2 stops41h 56m

Osaka Kansai Intl

Tue 9/2

7:10 pm-10:10 am

1 stop28h 00m

$1,033

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sat 11/1

12:00 pm-9:00 pm

1 stop20h 00m

Osaka Kansai Intl

Mon 11/10

6:10 pm-8:40 am

1 stop28h 30m

$1,034

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 cheapest month to fly to Osaka Kansai Intl Airport?

In general, September 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 $916. If you aren’t able to travel during the month of September, then book flights to Osaka Kansai Intl Airport from Boston during October instead. Flights to Osaka Kansai Intl Airport in October, while not as cheap as those in September, still average around $987.

What is the cheapest day to depart on your flight to Osaka Kansai Intl Airport?

The cheapest day to depart from Boston to Osaka Kansai Intl Airport is on a Wednesday. Travelers who choose to depart for Osaka Kansai Intl Airport on a Wednesday will often find tickets for as low as $1,259. Flights from Boston to Osaka Kansai Intl Airport on a Friday will generally be more expensive and average around $1,606. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Osaka Kansai Intl Airport?

Our data shows that the cheapest Boston to Osaka Kansai Intl Airport flights are usually those with departure times in the evening. Our users have found flights to Osaka Kansai Intl Airport in the evening for as low as $1,167. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $2,112 on average. Flights to Osaka Kansai Intl Airport from Boston in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You could potentially save up to 11% 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

Best Price Found

$463

Fastest flight time

19h 05m

Direct flights

None
The best one-way flight to Osaka Kansai Intl Airport from Boston in the past 72 hours is $463. The best round-trip flight deal from Boston to Osaka Kansai Intl Airport found on momondo in the last 72 hours is $883.
The fastest flight from Boston to Osaka Kansai Intl Airport takes 19h 05m
There are no direct flights from Boston to Osaka Kansai Intl Airport. Popular non-direct route for this connection is Boston Logan Intl Airport - Osaka Kansai Intl Airport.
Search flight deals

  • 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. 19h 05m 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
DeltaPriceFrom $807Free CancellationRating
8.0
7,981 reviews
Search Delta flights
Air CanadaPriceFrom $817Free CancellationRating
7.1
9,851 reviews
Search Air Canada flights
Cathay PacificPriceFrom $867Free CancellationRating
7.6
949 reviews
Search Cathay Pacific flights
ANAPriceFrom $979Free CancellationRating
8.4
922 reviews
Search ANA flights
United AirlinesPriceFrom $1,056Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
Japan AirlinesPriceFrom $1,239Free CancellationRating
8.3
1,536 reviews
Search Japan Airlines flights

Traveling to a place near Osaka?

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

An easier way to manage your Osaka Kansai Intl Airport trip

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