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Cheap flights from Boston to Osaka from $435

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 1/27. 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

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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 - 12:35 pm
BOS
-
KIX
27h 55m
2 stops
Hainan Airlines Logo
2:35 pm - 5:20 pm
KIX
-
BOS
39h 45m
1 stop
$856Hainan Airlines
Wed, Mar 4 - Sat, Mar 14
ANA Logo
6:00 am - 4:40 pm
BOS
-
KIX
20h 40m
1 stop
ANA Logo
5:35 pm - 7:08 pm
KIX
-
BOS
39h 33m
2 stops
$869ANA
Tue, Feb 17 - Mon, Feb 23
United Airlines Logo
6:00 am - 4:40 pm
BOS
-
KIX
20h 40m
1 stop
United Airlines Logo
6:35 pm - 7:58 am
KIX
-
BOS
27h 23m
1 stop
$879United Airlines
Tue, Feb 17 - Tue, Feb 24
United Airlines Logo
6:00 am - 4:40 pm
BOS
-
KIX
20h 40m
1 stop
United Airlines Logo
6:35 pm - 9:15 am
KIX
-
BOS
28h 40m
2 stops
$884United Airlines
Tue, Feb 17 - Tue, Feb 24
Multiple Airlines Logo
6:15 am - 8:20 pm
BOS
-
ITM
24h 05m
2 stops
Multiple Airlines Logo
3:25 pm - 10:37 pm
ITM
-
BOS
21h 12m
2 stops
$916Multiple Airlines
Sun, Feb 1 - Sat, Feb 7
Multiple Airlines Logo
6:15 am - 8:00 am
BOS
-
UKB
35h 45m
2 stops
Multiple Airlines Logo
7:05 am - 10:37 pm
UKB
-
BOS
29h 32m
2 stops
$923Multiple Airlines
Wed, Feb 18 - Wed, Feb 25
Korean Air Logo
11:00 am - 5:40 pm
BOS
-
UKB
40h 40m
1 stop
Korean Air Logo
6:40 pm - 9:40 am
UKB
-
BOS
28h 00m
1 stop
$1,097Korean Air
Tue, Feb 17 - Thu, Mar 19
Air Canada Logo
5:25 am - 6:55 pm
BOS
-
ITM
24h 30m
2 stops
Air Canada Logo
3:00 pm - 10:39 pm
ITM
-
BOS
20h 39m
2 stops
$1,153Air Canada
Mon, May 11 - Fri, Jun 5
Korean Air Logo
11:00 am - 10:10 am
BOS
-
UKB
33h 10m
1 stop
Korean Air Logo
11:10 am - 8:40 am
UKB
-
BOS
35h 30m
1 stop
$1,159Korean Air
Mon, Jan 26 - Mon, Feb 2
Air Canada Logo
10:40 am - 6:55 pm
BOS
-
ITM
19h 15m
2 stops
Air Canada Logo
2:05 pm - 9:50 am
ITM
-
BOS
32h 45m
2 stops
$1,174Air Canada
Wed, Jul 1 - Wed, Jul 8

Cathay Pacific flights from Boston to Osaka

Our best Cathay Pacific deals on Boston to Osaka flight tickets
Cathay Pacific
Mar 23
BOS1:30 amBoston Logan Intl
24h 45m
1 stop
KIX3:15 pmOsaka Kansai Intl
Apr 14
KIX6:35 pmOsaka Kansai Intl
41h 25m
1 stop
BOS11:00 pmBoston Logan Intl
$1,026
Cathay Pacific
Apr 8
BOS1:45 amBoston Logan Intl
22h 15m
1 stop
KIX1:00 pmOsaka Kansai Intl
Apr 21
KIX9:10 amOsaka Kansai Intl
26h 50m
1 stop
BOS11:00 pmBoston Logan Intl
$1,031
Cathay Pacific
Mar 23
BOS1:30 amBoston Logan Intl
30h 35m
1 stop
KIX9:05 pmOsaka Kansai Intl
Apr 14
KIX4:20 pmOsaka Kansai Intl
43h 40m
2 stops
BOS11:00 pmBoston Logan Intl
$1,041

United Airlines flights from Boston to Osaka

Our best United Airlines deals on Boston to Osaka flight tickets
United Airlines
Feb 17
BOS6:00 amBoston Logan Intl
20h 40m
1 stop
KIX4:40 pmOsaka Kansai Intl
Feb 24
KIX6:35 pmOsaka Kansai Intl
27h 23m
1 stop
BOS7:58 amBoston Logan Intl
$879
United Airlines
Feb 17
BOS6:00 amBoston Logan Intl
20h 40m
1 stop
KIX4:40 pmOsaka Kansai Intl
Feb 24
KIX6:35 pmOsaka Kansai Intl
28h 40m
2 stops
BOS9:15 amBoston Logan Intl
$884
United Airlines
Feb 19
BOS6:00 amBoston Logan Intl
20h 40m
1 stop
KIX4:40 pmOsaka Kansai Intl
Feb 26
KIX6:35 pmOsaka Kansai Intl
19h 22m
2 stops
BOS11:57 pmBoston Logan Intl
$979

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 January 21, 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

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 3/4

6:40 pm-12:35 pm

2 stops27h 55m

Osaka Kansai Intl

Sat 3/14

2:35 pm-5:20 pm

1 stop39h 45m

$856

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 2/17

6:00 am-4:40 pm

1 stop20h 40m

Osaka Kansai Intl

Mon 2/23

5:35 pm-7:08 pm

2 stops39h 33m

$869

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 2/17

6:00 am-4:40 pm

1 stop20h 40m

Osaka Kansai Intl

Tue 2/24

6:35 pm-7:58 am

1 stop27h 23m

$879

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 2/17

6:00 am-4:40 pm

1 stop20h 40m

Osaka Kansai Intl

Tue 2/24

6:35 pm-9:15 am

2 stops28h 40m

$884

BostonOsaka

BOS - ITM

BOSITM

Boston Logan Intl

Sun 2/1

6:15 am-8:20 pm

2 stops24h 05m

Osaka Itami

Sat 2/7

3:25 pm-10:37 pm

2 stops21h 12m

$916

BostonKobe

BOS - UKB

BOSUKB

Boston Logan Intl

Wed 2/18

6:15 am-8:00 am

2 stops35h 45m

Kobe

Wed 2/25

7:05 am-10:37 pm

2 stops29h 32m

$923

BostonKobe

BOS - UKB

BOSUKB

Boston Logan Intl

Tue 2/17

11:00 am-5:40 pm

1 stop40h 40m

Kobe

Thu 3/19

6:40 pm-9:40 am

1 stop28h 00m

$1,097

BostonOsaka

BOS - ITM

BOSITM

Boston Logan Intl

Mon 5/11

5:25 am-6:55 pm

2 stops24h 30m

Osaka Itami

Fri 6/5

3:00 pm-10:39 pm

2 stops20h 39m

$1,153

BostonKobe

BOS - UKB

BOSUKB

Boston Logan Intl

Mon 1/26

11:00 am-10:10 am

1 stop33h 10m

Kobe

Mon 2/2

11:10 am-8:40 am

1 stop35h 30m

$1,159

BostonOsaka

BOS - ITM

BOSITM

Boston Logan Intl

Wed 7/1

10:40 am-6:55 pm

2 stops19h 15m

Osaka Itami

Wed 7/8

2:05 pm-9:50 am

2 stops32h 45m

$1,174

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 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 $938. 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 $1,016.

Can stopping save me money on Boston to Osaka flights?

You could potentially save up to 11% 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 January 2026, prices for Boston to Osaka flights are approximately 28% cheaper 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

  • 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
10,646 reviews
Search Air Canada flights
Cathay PacificPriceFrom $909Free CancellationRating
7.6
1,140 reviews
Search Cathay Pacific flights
ANAPriceFrom $989Free CancellationRating
8.4
1,077 reviews
Search ANA flights
United AirlinesPriceFrom $1,088Free CancellationRating
7.4
9,191 reviews
Search United Airlines flights
Japan AirlinesPriceFrom $1,239Free CancellationRating
8.3
1,688 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