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$402+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — OSA
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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1. Tell us where you want to go

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

Cheap 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 December 28, 2025.

This Air Canada deal was found by Cheapflights users on 12/26. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:55 pmBOS - KIX
2 stops35h 40mMultiple Airlines
Tue 1/1310:50 amKIX - BOS
2 stops36h 42mMultiple Airlines
Deal found 12/26$1,477
This oojo deal was found by Cheapflights users on 12/27. 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.
Sun 12/286:40 pmBOS - KIX
2 stops27h 55mHainan Airlines
Tue 1/132:35 pmKIX - BOS
1 stop39h 45mHainan Airlines
Deal found 12/27$1,550
This oojo deal was found by Cheapflights users on 12/26. 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.
Sat 12/2712:30 amBOS - KIX
1 stop27h 20mCathay Pacific
Tue 1/136:05 pmKIX - BOS
1 stop41h 55mCathay Pacific
Deal found 12/26$2,227
This Trip.com deal was found by Cheapflights users on 12/26. 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.
Mon 12/2912:30 amBOS - KIX
1 stop27h 20mCathay Pacific
Thu 1/110:00 amKIX - BOS
1 stop26h 00mCathay Pacific
Deal found 12/26$2,360
This FlightHub deal was found by Cheapflights users on 12/26. 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.
Tue 12/3010:15 amBOS - ITM
2 stops19h 40mMultiple Airlines
Thu 1/111:30 amITM - BOS
2 stops25h 07mMultiple Airlines
Deal found 12/26$2,466
This Gurufare deal was found by Cheapflights users on 12/26. 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.
Tue 12/3012:05 pmBOS - ITM
1 stop17h 50mJapan Airlines
Thu 1/14:30 pmITM - BOS
2 stops19h 28mJapan Airlines
Deal found 12/26$3,117
This Ovago deal was found by Cheapflights users on 12/26. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:45 amBOS - UKB
2 stops24h 00mANA
Thu 1/19:15 pmUKB - BOS
2 stops35h 33mANA
Deal found 12/26$3,276
This Korean Air deal was found by Cheapflights users on 12/26. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3011:00 amBOS - UKB
1 stop33h 10mKorean Air
Thu 1/16:40 pmUKB - BOS
1 stop28h 00mKorean Air
Deal found 12/26$9,372
This Korean Air deal was found by Cheapflights users on 12/26. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:25 pmBOS - UKB
2 stops25h 45mMultiple Airlines
Thu 1/16:40 pmUKB - BOS
1 stop28h 00mMultiple Airlines
Deal found 12/26$9,715

Find 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 December 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$774
(SmartFares)

One-way from

$402
(SmartFares)

Popular in

June

Cheapest in

September

Average price

$1,264
Provider with most accurate pricing for Boston Logan Intl-Osaka (OSA) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Osaka (OSA) flights.
Search Deals
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. 5% potential increase in price ($71 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 28, 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

Wed 1/14

10:15 am-8:35 pm

2 stops20h 20m

Osaka Kansai Intl

Wed 1/21

3:45 pm-10:37 pm

2 stops20h 52m

$832

BostonOsaka

BOS - ITM

BOSITM

Boston Logan Intl

Mon 1/12

6:15 am-8:20 pm

2 stops24h 05m

Osaka Itami

Fri 2/13

4:00 pm-10:37 pm

2 stops20h 37m

$832

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 2/10

6:15 am-10:20 pm

2 stops26h 05m

Osaka Kansai Intl

Tue 2/17

10:40 am-7:42 pm

2 stops23h 02m

$833

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 3/15

7:40 pm-12:35 pm

2 stops27h 55m

Osaka Kansai Intl

Sat 3/21

2:35 pm-5:20 pm

1 stop39h 45m

$854

BostonKobe

BOS - UKB

BOSUKB

Boston Logan Intl

Tue 2/10

6:00 am-9:45 pm

2 stops25h 45m

Kobe

Tue 2/17

7:05 am-2:30 pm

2 stops21h 25m

$866

BostonOsaka

BOS - ITM

BOSITM

Boston Logan Intl

Tue 2/10

6:00 am-7:10 pm

2 stops23h 10m

Osaka Itami

Tue 2/17

7:05 am-12:46 pm

2 stops19h 41m

$867

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 1/14

11:00 am-12:50 pm

1 stop35h 50m

Osaka Kansai Intl

Wed 2/4

9:00 am-8:40 am

1 stop37h 40m

$882

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 1/12

4:49 pm-4:40 pm

2 stops33h 51m

Osaka Kansai Intl

Fri 2/13

6:35 pm-12:49 am

1 stop20h 14m

$883

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Mon 2/9

12:45 pm-8:35 am

2 stops29h 50m

Osaka Kansai Intl

Mon 2/16

9:10 pm-2:12 pm

2 stops31h 02m

$904

BostonKobe

BOS - UKB

BOSUKB

Boston Logan Intl

Wed 1/14

6:15 am-9:45 pm

2 stops25h 30m

Kobe

Wed 1/21

7:05 am-10:37 pm

2 stops29h 32m

$920

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Showing 1-10 of 57 results
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Compare providers for flights from Boston to Osaka

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Osaka in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Osaka flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Boston-Osaka flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Boston-Osaka flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Osaka flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Osaka flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 December 26, 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, September is the cheapest month in which you can book a flight from Boston to Osaka (average of $787). Flying from Boston to Osaka in June is currently the most expensive (average of $1,208). 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 December 28, 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 35% versus a flight at noon.

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 December 28, 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
1,049 reviews

Overall

8.4

Crew

8.7

Entertainment

7.9

Food

7.7

Boarding

8.5

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Julie,Sep 2025

CGK - HND

Flight attendants are nice, friendly and helpful. Highly recommend to flight with this airline.
ANA
8.4
Very good
1,049 reviews
ANA
8.4
Very good
1,049 reviews

Overall

8.4

Crew

8.7

Entertainment

7.9

Food

7.7

Boarding

8.5

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Julie,Sep 2025

CGK - HND

Flight attendants are nice, friendly and helpful. Highly recommend to flight with this airline.
Japan Airlines
8.3
Very good
1,662 reviews
ANA
8.4
Very good
1,049 reviews

Overall

8.4

Crew

8.7

Entertainment

7.9

Food

7.7

Boarding

8.5

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Julie,Sep 2025

CGK - HND

Flight attendants are nice, friendly and helpful. Highly recommend to flight with this airline.
Cathay Pacific
7.6
Good
1,106 reviews
ANA
8.4
Very good
1,049 reviews

Overall

8.4

Crew

8.7

Entertainment

7.9

Food

7.7

Boarding

8.5

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Julie,Sep 2025

CGK - HND

Flight attendants are nice, friendly and helpful. Highly recommend to flight with this airline.
United Airlines
7.4
Good
9,113 reviews
ANA
8.4
Very good
1,049 reviews

Overall

8.4

Crew

8.7

Entertainment

7.9

Food

7.7

Boarding

8.5

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Julie,Sep 2025

CGK - HND

Flight attendants are nice, friendly and helpful. Highly recommend to flight with this airline.
Air Canada
7.1
Good
10,562 reviews
ANA
8.4
Very good
1,049 reviews

Overall

8.4

Crew

8.7

Entertainment

7.9

Food

7.7

Boarding

8.5

Comfort

8.2

Reviews

1 / 20
10.0
Excellent

Julie,Sep 2025

CGK - HND

Flight attendants are nice, friendly and helpful. Highly recommend to flight with this airline.

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 24h 05m. Air Canada provides one of the quickest options available for as low as $832. There are 6845 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 $787, 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 $909 and $979, 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, September is the cheapest month in which you can book a flight from Boston to Osaka (average of $787). Flying from Boston to Osaka in June is currently the most expensive (average of $1,208). 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

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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 Osaka Itami flights
Hartford to Osaka 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 December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$787Average$1,115FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$909Average$1,350FlexibilityNo cancel feeOn-time72%
ANACheapest$979Average$1,213FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$1,056Average$1,443FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$1,493Average$2,196FlexibilityNo cancel feeOn-time79%

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