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Cheap flights from Boston to Osaka from $640

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 7/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 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 - 12:35 pm
BOS
-
KIX
27h 55m
2 stops
Hainan Airlines Logo
2:35 pm - 4:20 pm
KIX
-
BOS
39h 45m
1 stop
$889Hainan Airlines
Fri, Nov 6 - Sat, Nov 28
Korean Air Logo
11:00 am - 10:40 pm
BOS
-
KIX
21h 40m
1 stop
Korean Air Logo
2:15 am - 8:40 am
KIX
-
BOS
20h 25m
1 stop
$906Korean Air
Wed, Nov 11 - Tue, Nov 17
ANA Logo
5:30 am - 4:45 pm
BOS
-
KIX
21h 15m
1 stop
ANA Logo
6:45 am - 2:02 pm
KIX
-
BOS
21h 17m
2 stops
$910ANA
Mon, Nov 16 - Thu, Dec 10
ANA Logo
8:05 am - 7:50 pm
BOS
-
KIX
22h 45m
2 stops
ANA Logo
6:45 am - 12:47 pm
KIX
-
BOS
20h 02m
2 stops
$911ANA
Tue, Sep 15 - Wed, Nov 11
ANA Logo
3:13 pm - 8:40 am
BOS
-
KIX
28h 27m
2 stops
ANA Logo
4:55 pm - 10:59 pm
KIX
-
BOS
19h 04m
1 stop
$915ANA
Wed, Sep 9 - Thu, Sep 17
ANA Logo
7:44 am - 2:50 pm
BOS
-
KIX
42h 06m
1 stop
ANA Logo
7:05 am - 2:02 pm
KIX
-
BOS
20h 57m
2 stops
$916ANA
Tue, Sep 15 - Wed, Nov 11
United Airlines Logo
5:01 pm - 2:50 pm
BOS
-
KIX
32h 49m
2 stops
United Airlines Logo
4:55 pm - 7:54 am
KIX
-
BOS
27h 59m
1 stop
$921United Airlines
Tue, Sep 1 - Tue, Sep 15
Korean Air Logo
12:55 pm - 11:20 am
BOS
-
KIX
33h 25m
1 stop
Korean Air Logo
6:15 pm - 10:10 am
KIX
-
BOS
28h 55m
1 stop
$923Korean Air
Wed, Sep 9 - Thu, Sep 17
United Airlines Logo
5:30 am - 4:45 pm
BOS
-
KIX
21h 15m
1 stop
United Airlines Logo
8:20 am - 11:54 pm
KIX
-
BOS
29h 34m
3 stops
$924United Airlines
Mon, Nov 16 - Thu, Dec 10
Korean Air Logo
12:55 pm - 8:45 pm
BOS
-
KIX
18h 50m
1 stop
Korean Air Logo
2:15 am - 10:10 am
KIX
-
BOS
20h 55m
1 stop
$925Korean Air
Wed, Sep 16 - Tue, Sep 22

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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
Nov 6
BOS6:40 pmBoston Logan Intl
27h 55m
2 stops
KIX12:35 pmOsaka Kansai Intl
Nov 28
KIX2:35 pmOsaka Kansai Intl
39h 45m
1 stop
BOS4:20 pmBoston Logan Intl
$889
Hainan Airlines
Sep 11
BOS6:40 pmBoston Logan Intl
29h 05m
2 stops
KIX12:45 pmOsaka Kansai Intl
Sep 26
KIX2:20 pmOsaka Kansai Intl
39h 20m
1 stop
BOS4:40 pmBoston Logan Intl
$949
Hainan Airlines
Oct 7
BOS6:40 pmBoston Logan Intl
29h 05m
2 stops
KIX12:45 pmOsaka Kansai Intl
Oct 17
KIX2:20 pmOsaka Kansai Intl
39h 20m
1 stop
BOS4:40 pmBoston Logan Intl
$959

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
Aug 31
BOS1:45 amBoston Logan Intl
24h 25m
1 stop
KIX3:10 pmOsaka Kansai Intl
Oct 1
KIX9:05 amOsaka Kansai Intl
27h 00m
1 stop
BOS11:05 pmBoston Logan Intl
$1,234
Cathay Pacific
Aug 31
BOS1:45 amBoston Logan Intl
24h 25m
1 stop
KIX3:10 pmOsaka Kansai Intl
Oct 1
KIX9:05 amOsaka Kansai Intl
27h 00m
1 stop
BOS11:05 pmBoston Logan Intl
$1,240
Cathay Pacific
Jun 21
BOS1:45 amBoston Logan Intl
24h 25m
1 stop
KIX3:10 pmOsaka Kansai Intl
Jun 29
KIX5:35 pmOsaka Kansai Intl
42h 30m
1 stop
BOS11:05 pmBoston Logan Intl
$2,144

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 June 17, 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 11/6

6:40 pm-12:35 pm

2 stops27h 55m

Osaka Kansai Intl

Sat 11/28

2:35 pm-4:20 pm

1 stop39h 45m

$889

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 11/11

11:00 am-10:40 pm

1 stop21h 40m

Osaka Kansai Intl

Tue 11/17

2:15 am-8:40 am

1 stop20h 25m

$906

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 11/16

5:30 am-4:45 pm

1 stop21h 15m

Osaka Kansai Intl

Thu 12/10

6:45 am-2:02 pm

2 stops21h 17m

$910

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 9/15

8:05 am-7:50 pm

2 stops22h 45m

Osaka Kansai Intl

Wed 11/11

6:45 am-12:47 pm

2 stops20h 02m

$911

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 9/9

3:13 pm-8:40 am

2 stops28h 27m

Osaka Kansai Intl

Thu 9/17

4:55 pm-10:59 pm

1 stop19h 04m

$915

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 9/15

7:44 am-2:50 pm

1 stop42h 06m

Osaka Kansai Intl

Wed 11/11

7:05 am-2:02 pm

2 stops20h 57m

$916

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 9/1

5:01 pm-2:50 pm

2 stops32h 49m

Osaka Kansai Intl

Tue 9/15

4:55 pm-7:54 am

1 stop27h 59m

$921

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 9/9

12:55 pm-11:20 am

1 stop33h 25m

Osaka Kansai Intl

Thu 9/17

6:15 pm-10:10 am

1 stop28h 55m

$923

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 11/16

5:30 am-4:45 pm

1 stop21h 15m

Osaka Kansai Intl

Thu 12/10

8:20 am-11:54 pm

3 stops29h 34m

$924
Quickest round-trip

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 9/16

12:55 pm-8:45 pm

1 stop18h 50m

Osaka Kansai Intl

Tue 9/22

2:15 am-10:10 am

1 stop20h 55m

$925

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 30% 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

18h 35m

Direct flights

None
The fastest flight from Boston to Osaka Kansai Intl Airport takes 18h 35m
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. 18h 35m 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 $762Free CancellationRating
7.1
11,200 reviews
Search Air Canada flights
ANAPriceFrom $796Free CancellationRating
8.3
1,236 reviews
Search ANA flights
Cathay PacificPriceFrom $833Free CancellationRating
7.6
1,380 reviews
Search Cathay Pacific flights
United AirlinesPriceFrom $979Free CancellationRating
7.4
9,843 reviews
Search United Airlines 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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