HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Osaka

$505+ Cheap flights from Boston (BOS) to Osaka (OSA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — OSA
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Osaka with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Boston Logan Intl to Osaka are usually found in September or November, booked 90 days in advance, depart on a Monday or Friday and return on a Thursday

Cheap flight deals from Boston to Osaka

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Osaka (OSA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated septiembre 15, 2025.

Round-trip from

$937
(SmartFares)

One-way from

$505
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$952
From Boston Logan Intl to Osaka (OSA)
Search Deals
One-way flight from Boston Logan Intl to Osaka (OSA)
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($85 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Boston to Osaka

Cheapest flights from Boston to Osaka
Explore the most affordable flight options available from Boston to Osaka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 15, 2025.

This SmartFares deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/196:40 pmBOS - KIX
2 stops27h 55mHainan Airlines
mar. 12/22:35 pmKIX - BOS
1 stop39h 45mHainan Airlines
Deal found 9/14$937
This oojo deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/271:30 amBOS - KIX
1 stop39h 50mCathay Pacific
mar. 11/44:55 pmKIX - BOS
1 stop43h 05mCathay Pacific
Deal found 9/13$942
This oojo deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/291:30 amBOS - KIX
1 stop30h 35mCathay Pacific
jue. 11/69:50 amKIX - BOS
1 stop26h 10mCathay Pacific
Deal found 9/15$951
This FlightHub deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/161:40 amBOS - KIX
1 stop40h 00mCathay Pacific
lun. 9/229:10 amKIX - BOS
1 stop26h 50mCathay Pacific
Deal found 9/13$957
This oojo deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/171:40 amBOS - KIX
1 stop22h 20mCathay Pacific
dom. 9/215:45 pmKIX - BOS
1 stop42h 15mCathay Pacific
Deal found 9/13$958
This Trip.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/1512:55 pmBOS - KIX
1 stop19h 05mMultiple Airlines
vie. 9/196:05 pmKIX - BOS
1 stop28h 50mMultiple Airlines
Deal found 9/14$964
This Gurufare deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/1612:30 amBOS - KIX
1 stop27h 20mCathay Pacific
jue. 12/49:25 amKIX - BOS
1 stop26h 35mCathay Pacific
Deal found 9/14$972
This oojo deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/2911:00 amBOS - UKB
1 stop40h 40mKorean Air
mar. 12/911:10 amUKB - BOS
1 stop35h 30mKorean Air
Deal found 9/13$1,056
This oojo deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/2812:00 pmBOS - UKB
1 stop33h 10mKorean Air
mar. 11/411:10 amUKB - BOS
1 stop35h 30mKorean Air
Deal found 9/13$1,107
This FlightHub deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/226:00 amBOS - UKB
2 stops26h 45mANA
vie. 10/317:05 amUKB - BOS
2 stops27h 44mANA
Deal found 9/14$1,108
This FlightHub deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/185:30 amBOS - ITM
2 stops22h 40mANA
mié. 12/38:00 amITM - BOS
2 stops18h 43mANA
Deal found 9/14$1,108
This FlightHub deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/167:55 pmBOS - ITM
2 stops34h 25mAir Canada
mié. 11/264:00 pmITM - BOS
2 stops20h 37mAir Canada
Deal found 9/14$1,109

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated septiembre 15, 2025.
Use the filters below to find and compare flights from Boston to Osaka that are best for you.

Fly from

Boston

Fly to

Osaka

Route

Depart

Return

Price

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

lun. 10/20

1:40 am-1:00 pm

1 stop22h 20m

Osaka Kansai Intl

jue. 11/6

9:25 am-10:00 pm

1 stop26h 35m

$977

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

lun. 10/20

1:40 am-6:10 pm

1 stop27h 30m

Osaka Kansai Intl

mié. 11/5

4:05 pm-10:00 pm

2 stops43h 55m

$994

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

mié. 3/11

1:30 am-2:55 pm

2 stops24h 25m

Osaka Kansai Intl

mar. 3/24

4:05 pm-11:00 pm

2 stops43h 55m

$1,010

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

sáb. 1/17

3:25 pm-4:40 pm

2 stops35h 15m

Osaka Kansai Intl

sáb. 2/7

6:35 pm-9:42 pm

1 stop17h 07m

$1,025

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

lun. 10/20

1:40 am-1:00 pm

1 stop22h 20m

Osaka Kansai Intl

vie. 11/7

4:55 pm-10:00 pm

1 stop43h 05m

$1,027

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

sáb. 2/21

12:30 am-12:45 pm

1 stop22h 15m

Osaka Kansai Intl

jue. 2/26

9:25 am-10:00 pm

1 stop26h 35m

$1,027

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

vie. 3/13

1:30 am-3:15 pm

1 stop24h 45m

Osaka Kansai Intl

dom. 3/22

6:05 pm-11:00 pm

1 stop41h 55m

$1,027

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

jue. 3/12

1:30 am-2:55 pm

2 stops24h 25m

Osaka Kansai Intl

lun. 3/23

9:50 am-11:00 pm

1 stop26h 10m

$1,044

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

mié. 3/11

1:30 am-6:20 am

1 stop39h 50m

Osaka Kansai Intl

vie. 3/20

4:05 pm-11:00 pm

2 stops43h 55m

$1,044

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

sáb. 1/31

12:30 am-9:05 pm

1 stop30h 35m

Osaka Kansai Intl

sáb. 2/14

4:05 pm-10:00 pm

2 stops43h 55m

$1,057

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Boston to Osaka

Have a flexible travel schedule? Discover the best time to fly to Osaka from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to Osaka

How far ahead should I book a flight from Boston to Osaka?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Osaka. Price data was last updated on September 12, 2025.

Booking 90 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boston to Osaka. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Boston to Osaka?

Currently, February is the cheapest month in which you can book a flight from Boston to Osaka (average of $866). Flying from Boston to Osaka in June is currently the most expensive (average of $1,310). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to OSA?

Find hourly flight availability from Boston to Osaka. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 15, 2025.

When flying from Boston to Osaka, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 25% versus a flight in the morning.

Reviews of airlines servicing Osaka

Get insights into the airlines that provide service to Osaka. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Osaka. Reviews last updated septiembre 15, 2025.
Peruse reviews from past customers who have flown with ANA, Japan Airlines, and Cathay Pacific from Boston to Osaka to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.4
Very good
961 reviews

Entertainment

7.9

Boarding

8.6

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
ANA
8.4
Very good
961 reviews
ANA
8.4
Very good
961 reviews

Entertainment

7.9

Boarding

8.6

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
Japan Airlines
8.3
Very good
1,559 reviews
ANA
8.4
Very good
961 reviews

Entertainment

7.9

Boarding

8.6

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
Cathay Pacific
7.6
Good
993 reviews
ANA
8.4
Very good
961 reviews

Entertainment

7.9

Boarding

8.6

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
United Airlines
7.4
Good
8,929 reviews
ANA
8.4
Very good
961 reviews

Entertainment

7.9

Boarding

8.6

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me
Air Canada
7.1
Good
10,000 reviews
ANA
8.4
Very good
961 reviews

Entertainment

7.9

Boarding

8.6

Crew

8.7

Food

7.7

Overall

8.4

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

SFO - NRT

ANA ground and flight crew are the best their is They are now officially my Airline of choice Crew are very attentive, friendly, sincere, helpful and respond to queries accurately, promptly and gives you the peace of mind when travelling Salute to the World’s Best Airline for me

Related info for your journey

Find useful and relevant information for your journey from Boston to Osaka. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boston to Osaka?

    Boston Logan Intl (BOS) is the airport you will fly out of if you book a flight from Boston to Osaka. You should not have trouble finding flights to Osaka from Logan Intl; the airport handles an average of 0 outbound flights to Osaka per day. You should also have plenty of airline options to choose from since 5 airlines have flights from the Boston airport to Osaka. It is only a 2.6 mi journey to Logan Intl (BOS) from Boston’s city center.

  • How long is the flight from Boston to Osaka?

    A quick flight from Boston to Osaka can take about 22h 20m. Cathay Pacific provides one of the quickest options available for as low as $977. There are 6872 mi between Boston and Osaka. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Boston to Osaka round-trip?

    Currently priced at $817, Air Canada will fly you from Boston to Osaka and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Cathay Pacific and ANA - these airlines can fly you to your destination from $883 and $989, respectively. You may be able to fly from Boston to Osaka for 35% less than the average price by searching for these airlines.

  • What are the most popular routes from Boston to Osaka?

    Most travelers choose Boston Logan Intl - Osaka Kansai Intl, Boston Logan Intl - Osaka Itami or Boston Logan Intl - Kobe when deciding on the best route from Boston to Osaka.

  • Can I find deals for flights from Boston to Osaka that include hotel bookings?

    Yes. In addition to deals on Boston to Osaka flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Osaka?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Osaka.

  • Can I find deals for business class flights from Boston to Osaka?

    Yes. Cheapflights offers flight deals from Boston to Osaka by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Osaka?

    Currently, February is the cheapest month in which you can book a flight from Boston to Osaka (average of $866). Flying from Boston to Osaka in June is currently the most expensive (average of $1,310). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Osaka?

Book flights to Osaka if you plan to visit one of these locations
Nara
Nishinomiya

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to Osaka

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Kansai Intl flights
Boston to Itami flights
Hartford to Itami flights
Hartford to Kansai Intl flights

Top 5 airlines flying from Boston to Osaka

Discover the top 5 airlines that operate flights from Boston to Osaka. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$817Average$1,192FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$883Average$1,190FlexibilityNo cancel feeOn-time72%
ANACheapest$989Average$1,304FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$1,056Average$1,443FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$1,493Average$2,212FlexibilityNo cancel feeOn-time79%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.