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Cheap flights from Boston to Osaka from $444

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 10/6. 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 (BOS-OSA)

Cheap round-trip flights

Air Canada Logo
6:00 am - 4:25 pmBOS-KIX
21h 25m2 stops
Air Canada Logo
6:05 pm - 9:30 amKIX-BOS
28h 25m2 stops
$794Air Canada
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Tue, Sep 9 - Tue, Sep 30
Logo
3:40 pm - 5:40 pmBOS-KIX
37h 00m2 stops
Logo
7:30 am - 2:52 pmKIX-BOS
45h 22m2 stops
$801
Find Deal
Tue, Oct 28 - Tue, Nov 11
Cathay Pacific Logo
1:40 am - 1:00 pmBOS-KIX
22h 20m1 stop
Cathay Pacific Logo
6:35 pm - 11:00 pmKIX-BOS
41h 25m1 stop
$850Cathay Pacific
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Mon, Sep 8 - Tue, Sep 30
Cathay Pacific Logo
1:40 am - 1:00 pmBOS-KIX
22h 20m1 stop
Cathay Pacific Logo
9:10 am - 11:00 pmKIX-BOS
26h 50m1 stop
$851Cathay Pacific
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Sun, Sep 21 - Mon, Sep 29
Cathay Pacific Logo
12:30 am - 12:45 pmBOS-KIX
22h 15m1 stop
Cathay Pacific Logo
9:50 am - 10:00 pmKIX-BOS
26h 10m1 stop
$858Cathay Pacific
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Sun, Nov 2 - Tue, Nov 25
Hainan Airlines Logo
6:40 pm - 12:35 pmBOS-KIX
27h 55m2 stops
Hainan Airlines Logo
2:35 pm - 4:20 pmKIX-BOS
39h 45m1 stop
$937Hainan Airlines
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Sun, Nov 2 - Sat, Nov 15
ANA Logo
8:00 am - 9:45 pmBOS-UKB
24h 45m2 stops
ANA Logo
9:15 pm - 2:29 pmUKB-BOS
31h 14m2 stops
$1,096ANA
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Mon, Oct 20 - Mon, Nov 3
ANA Logo
5:30 am - 6:10 pmBOS-ITM
22h 40m2 stops
ANA Logo
2:00 pm - 6:48 pmITM-BOS
18h 48m2 stops
$1,097ANA
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Tue, Nov 4 - Tue, Nov 25
United Airlines Logo
7:30 am - 5:05 pmBOS-ITM
44h 35m2 stops
United Airlines Logo
12:00 pm - 6:00 amITM-BOS
31h 00m3 stops
$1,126United Airlines
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Wed, Oct 8 - Wed, Oct 15
United Airlines Logo
6:00 am - 6:10 pmBOS-ITM
22h 10m2 stops
United Airlines Logo
1:00 pm - 10:48 pmITM-BOS
23h 48m3 stops
$1,136United Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 22

Cathay Pacific flights from Boston to Osaka

Our best Cathay Pacific deals on Boston to Osaka flight tickets
Cathay Pacific
Sep 8
BOS1:40 amBoston Logan Intl
30h 35m
1 stop
KIX9:15 pmOsaka Kansai Intl
Sep 30
KIX6:35 pmOsaka Kansai Intl
41h 25m
1 stop
BOS11:00 pmBoston Logan Intl
$850
Find similar
Cathay Pacific
Sep 21
BOS1:40 amBoston Logan Intl
22h 20m
1 stop
KIX1:00 pmOsaka Kansai Intl
Sep 29
KIX9:10 amOsaka Kansai Intl
26h 50m
1 stop
BOS11:00 pmBoston Logan Intl
$851
Find similar
Cathay Pacific
Nov 2
BOS12:30 amBoston Logan Intl
22h 15m
1 stop
KIX12:45 pmOsaka Kansai Intl
Nov 25
KIX9:50 amOsaka Kansai Intl
26h 10m
1 stop
BOS10:00 pmBoston Logan Intl
$858
Find similar

ANA flights from Boston to Osaka

Our best ANA deals on Boston to Osaka flight tickets
ANA
Sep 9
BOS6:02 amBoston Logan Intl
19h 48m
1 stop
KIX2:50 pmOsaka Kansai Intl
Sep 30
KIX4:50 pmOsaka Kansai Intl
20h 07m
1 stop
BOS11:57 pmBoston Logan Intl
$1,087
Find similar
ANA
Oct 20
BOS8:00 amBoston Logan Intl
24h 45m
2 stops
UKB9:45 pmKobe
Nov 3
UKB9:15 pmKobe
31h 14m
2 stops
BOS2:29 pmBoston Logan Intl
$1,096
Find similar
ANA
Nov 4
BOS5:30 amBoston Logan Intl
22h 40m
2 stops
ITM6:10 pmOsaka Itami
Nov 25
ITM2:00 pmOsaka Itami
18h 48m
2 stops
BOS6:48 pmBoston Logan Intl
$1,097
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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 August 26, 2025.
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

Tue 9/9

6:00 am-4:25 pm

2 stops21h 25m

Osaka Kansai Intl

Tue 9/30

6:05 pm-9:30 am

2 stops28h 25m

$794

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 10/28

3:40 pm-5:40 pm

2 stops37h 00m

Osaka Kansai Intl

Tue 11/11

7:30 am-2:52 pm

2 stops45h 22m

$801

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 9/8

1:40 am-1:00 pm

1 stop22h 20m

Osaka Kansai Intl

Tue 9/30

6:35 pm-11:00 pm

1 stop41h 25m

$850

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 9/21

1:40 am-1:00 pm

1 stop22h 20m

Osaka Kansai Intl

Mon 9/29

9:10 am-11:00 pm

1 stop26h 50m

$851

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 11/2

12:30 am-12:45 pm

1 stop22h 15m

Osaka Kansai Intl

Tue 11/25

9:50 am-10:00 pm

1 stop26h 10m

$858

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 11/2

6:40 pm-12:35 pm

2 stops27h 55m

Osaka Kansai Intl

Sat 11/15

2:35 pm-4:20 pm

1 stop39h 45m

$937

BostonKobe

BOS - UKB

BOSUKB

Boston Logan Intl

Mon 10/20

8:00 am-9:45 pm

2 stops24h 45m

Kobe

Mon 11/3

9:15 pm-2:29 pm

2 stops31h 14m

$1,096

BostonOsaka

BOS - ITM

BOSITM

Boston Logan Intl

Tue 11/4

5:30 am-6:10 pm

2 stops22h 40m

Osaka Itami

Tue 11/25

2:00 pm-6:48 pm

2 stops18h 48m

$1,097

BostonOsaka

BOS - ITM

BOSITM

Boston Logan Intl

Wed 10/8

7:30 am-5:05 pm

2 stops44h 35m

Osaka Itami

Wed 10/15

12:00 pm-6:00 am

3 stops31h 00m

$1,126

BostonOsaka

BOS - ITM

BOSITM

Boston Logan Intl

Mon 12/1

6:00 am-6:10 pm

2 stops22h 10m

Osaka Itami

Mon 12/22

1:00 pm-10:48 pm

3 stops23h 48m

$1,136

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, November 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 $951. If you are unable to visit Osaka during the month of November, then departing from Boston during the month September is also very affordable. Most momondo users find prices during this month for around $977.

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

According to our data, Monday is the cheapest day to fly to Osaka from Boston. The lowest ticket price found for a Monday departure recently was $1,438. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Boston to Osaka for around $1,580.

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

Our data shows that the cheapest Boston to Osaka flights are usually those with departure times in the evening. Our users have found flights to Osaka in the evening for as low as $1,187. Flights to Osaka are more costly in the morning, with an average ticket price of $1,582. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Boston to Osaka flights?

You could potentially save up to 14% on your flight if you consider stops on a Boston to Osaka flight.

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

Direct flights

None
There are no direct flights from Boston to Osaka. There are no popular flight routes from Boston to Osaka.
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  • 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 40m.

  • 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 $762Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
DeltaPriceFrom $807Free CancellationRating
7.9
7,979 reviews
Search Delta flights
Cathay PacificPriceFrom $883Free CancellationRating
7.6
975 reviews
Search Cathay Pacific flights
ANAPriceFrom $989Free CancellationRating
8.4
943 reviews
Search ANA flights
United AirlinesPriceFrom $1,056Free CancellationRating
7.4
8,943 reviews
Search United Airlines flights
Japan AirlinesPriceFrom $1,493Free CancellationRating
8.3
1,552 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