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Cheap flights from Boston to Osaka from $478

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 4/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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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
$933Hainan 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
$955Hainan 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
$956Hainan Airlines
Wed, Sep 2 - Sat, Sep 19
Multiple Airlines Logo
6:40 pm - 12:45 pm
BOS
-
KIX
29h 05m
2 stops
Multiple Airlines Logo
7:35 am - 1:54 pm
KIX
-
BOS
43h 19m
3 stops
$1,055Multiple Airlines
Wed, Sep 9 - Mon, Sep 14
Cathay Pacific Logo
1:45 am - 3:10 pm
BOS
-
KIX
24h 25m
1 stop
Cathay Pacific Logo
9:05 am - 11:05 pm
KIX
-
BOS
27h 00m
1 stop
$1,091Cathay Pacific
Mon, Sep 14 - Thu, Sep 24
Cathay Pacific Logo
1:45 am - 2:50 pm
BOS
-
KIX
24h 05m
2 stops
Cathay Pacific Logo
9:05 am - 11:05 pm
KIX
-
BOS
27h 00m
1 stop
$1,107Cathay Pacific
Sun, Sep 13 - Thu, Sep 24
Multiple Airlines Logo
7:59 pm - 12:50 pm
BOS
-
KIX
27h 51m
2 stops
Multiple Airlines Logo
7:05 pm - 7:39 am
KIX
-
BOS
25h 34m
2 stops
$1,124Multiple Airlines
Tue, Sep 1 - Tue, Sep 15
China Airlines Logo
8:30 pm - 12:00 pm
BOS
-
KIX
26h 30m
2 stops
China Airlines Logo
7:05 pm - 7:57 am
KIX
-
BOS
49h 52m
2 stops
$1,129China Airlines
Wed, Sep 2 - Sat, Sep 19
Air Canada Logo
10:40 am - 6:55 pm
BOS
-
ITM
19h 15m
2 stops
Air Canada Logo
2:00 pm - 9:27 pm
ITM
-
BOS
20h 27m
2 stops
$1,318Air Canada
Sat, Sep 26 - Tue, Oct 13
Air Canada Logo
5:50 am - 6:55 pm
BOS
-
ITM
24h 05m
2 stops
Air Canada Logo
2:00 pm - 10:40 pm
ITM
-
BOS
21h 40m
2 stops
$1,353Air Canada
Sun, Sep 13 - Thu, Sep 24

Cathay Pacific flights from Boston to Osaka

Our best Cathay Pacific deals on Boston to Osaka flight tickets
Cathay Pacific
Sep 14
BOS1:45 amBoston Logan Intl
24h 25m
1 stop
KIX3:10 pmOsaka Kansai Intl
Sep 24
KIX9:05 amOsaka Kansai Intl
27h 00m
1 stop
BOS11:05 pmBoston Logan Intl
$1,091
Cathay Pacific
Sep 13
BOS1:45 amBoston Logan Intl
24h 05m
2 stops
KIX2:50 pmOsaka Kansai Intl
Sep 24
KIX9:05 amOsaka Kansai Intl
27h 00m
1 stop
BOS11:05 pmBoston Logan Intl
$1,107
Cathay Pacific
Sep 15
BOS1:45 amBoston Logan Intl
24h 05m
2 stops
KIX2:50 pmOsaka Kansai Intl
Sep 23
KIX4:15 pmOsaka Kansai Intl
43h 50m
2 stops
BOS11:05 pmBoston Logan Intl
$1,123

Hainan Airlines flights from Boston to Osaka

Our best Hainan Airlines deals on Boston to Osaka flight tickets
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
$933
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
$955
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
$956

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Osaka 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 April 3, 2026.
Use the filters below to find and compare flights from Boston to Osaka that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

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

$933

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

$955

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

$956

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 9/9

6:40 pm-12:45 pm

2 stops29h 05m

Osaka Kansai Intl

Mon 9/14

7:35 am-1:54 pm

3 stops43h 19m

$1,055

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 9/14

1:45 am-3:10 pm

1 stop24h 25m

Osaka Kansai Intl

Thu 9/24

9:05 am-11:05 pm

1 stop27h 00m

$1,091

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 9/13

1:45 am-2:50 pm

2 stops24h 05m

Osaka Kansai Intl

Thu 9/24

9:05 am-11:05 pm

1 stop27h 00m

$1,107

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 9/1

7:59 pm-12:50 pm

2 stops27h 51m

Osaka Kansai Intl

Tue 9/15

7:05 pm-7:39 am

2 stops25h 34m

$1,124

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 9/2

8:30 pm-12:00 pm

2 stops26h 30m

Osaka Kansai Intl

Sat 9/19

7:05 pm-7:57 am

2 stops49h 52m

$1,129
Quickest round-trip

BostonOsaka

BOS - ITM

BOSITM

Boston Logan Intl

Sat 9/26

10:40 am-6:55 pm

2 stops19h 15m

Osaka Itami

Tue 10/13

2:00 pm-9:27 pm

2 stops20h 27m

$1,318

BostonOsaka

BOS - ITM

BOSITM

Boston Logan Intl

Sun 9/13

5:50 am-6:55 pm

2 stops24h 05m

Osaka Itami

Thu 9/24

2:00 pm-10:40 pm

2 stops21h 40m

$1,353

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

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?

What is the cheapest month to fly to Osaka?

In general, September is the cheapest month to fly from Boston to Osaka. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,059. If you are unable to visit Osaka during the month of September, then departing from Boston during the month February is also very affordable. Most momondo users find prices during this month for around $1,063.

Can stopping save me money on Boston to Osaka flights?

You could potentially save up to 1% on your flight if you consider stops on a Boston to Osaka flight.

How have Boston to Osaka flight prices changed over time?

As of April 2026, prices for Boston to Osaka flights are approximately 8% more expensive when compared to flights at the same time last year.

When to book flights from Boston to Osaka

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

Cheap Boston to Osaka (BOS to OSA) flight deals and tips

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

Fastest flight time

19h 15m

Direct flights

None
The fastest flight from Boston to Osaka takes 19h 15m
There are no direct flights from Boston to Osaka. There are no popular flight routes from Boston to Osaka.
Search flight deals

Frequently asked questions about flying from Boston to Osaka

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

    A flight from Boston Logan Intl to Osaka will travel around 6850.9 mi. A reasonable flight in good conditions will take 19h 15m.

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

    Prices for flights from Boston Logan Intl Airport to Osaka are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Boston Logan Intl Airport to Osaka.

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

    The required travel and health documents for your Osaka trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Osaka. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Best airlines flying from Boston to Osaka

Compare and see reviews for airlines that fly from Boston to Osaka with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $787Free CancellationRating
7.1
10,889 reviews
Search Air Canada flights
Cathay PacificPriceFrom $833Free CancellationRating
7.6
1,239 reviews
Search Cathay Pacific flights
United AirlinesPriceFrom $979Free CancellationRating
7.4
9,542 reviews
Search United Airlines flights
ANAPriceFrom $1,034Free CancellationRating
8.4
1,163 reviews
Search ANA flights
Japan AirlinesPriceFrom $1,493Free CancellationRating
8.3
1,765 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
Nishinomiya

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Osaka from Boston.

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

momondo does allow users to show only those flights to Osaka from Boston which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to Osaka from Boston. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Osaka from Boston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Osaka trip

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Find better results for your trip to Japan

Fly into one of these airports located in Osaka

Airports listed have a maximum distance of 22.5 mi from Osaka
Osaka Itami Airport
Osaka Kansai Intl Airport