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$474+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — OSA
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Osaka are usually found in November or September, 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 July 29, 2025.

Round-trip from

$845
(FlightHub)

One-way from

$474
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$1,198
From Boston Logan Intl to Osaka (OSA)
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One-way flight from Boston Logan Intl to Osaka (OSA)
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Highest demand for flights based on searches. 3% potential increase in price ($51 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 29, 2025.

This FlightHub deal was found by Cheapflights users on 7/29. 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.
Sat 9/66:30 pmBOS - KIX
2 stops32h 55mAir Canada
Sat 9/206:05 pmKIX - BOS
2 stops28h 25mAir Canada
Deal found 7/29$845
This oojo deal was found by Cheapflights users on 7/28. 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.
Wed 9/31:40 amBOS - KIX
1 stop30h 35mCathay Pacific
Mon 9/810:00 amKIX - BOS
1 stop26h 00mCathay Pacific
Deal found 7/28$941
This FlightHub deal was found by Cheapflights users on 7/26. 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.
Sun 9/286:00 amBOS - ITM
2 stops25h 15mAir Canada
Thu 10/91:00 pmITM - BOS
2 stops22h 39mAir Canada
Deal found 7/26$978
This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/95:30 amBOS - ITM
2 stops23h 40mANA
Fri 11/2112:00 pmITM - BOS
2 stops23h 49mANA
Deal found 7/27$980
This oojo deal was found by Cheapflights users on 7/29. 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.
Tue 8/2612:55 pmBOS - UKB
1 stop32h 15mKorean Air
Tue 9/26:40 pmUKB - BOS
1 stop28h 30mKorean Air
Deal found 7/29$1,003
This oojo deal was found by Cheapflights users on 7/29. 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.
Tue 8/2612:55 pmBOS - KIX
1 stop19h 05mKorean Air
Tue 9/26:10 pmKIX - BOS
1 stop29h 00mKorean Air
Deal found 7/29$1,006
This Cheapflightsfares deal was found by Cheapflights users on 7/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:00 amBOS - UKB
2 stops26h 45mANA
Tue 10/147:05 amUKB - BOS
2 stops20h 11mANA
Deal found 7/26$1,043
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/17:10 amBOS - ITM
2 stops20h 55mUnited Airlines
Wed 9/1712:00 pmITM - BOS
2 stops24h 22mUnited Airlines
Deal found 7/27$1,061
This Orbitz deal was found by Cheapflights users on 7/29. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/56:00 amBOS - ITM
2 stops24h 50mMultiple Airlines
Sun 9/148:00 amITM - BOS
2 stops27h 39mMultiple Airlines
Deal found 7/29$1,084
This Trip.com deal was found by Cheapflights users on 7/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/91:40 amBOS - UKB
2 stops43h 30mMultiple Airlines
Wed 9/1711:10 amUKB - BOS
2 stops49h 25mMultiple Airlines
Deal found 7/27$1,195
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/17:20 amBOS - ITM
2 stops23h 25mAlaska Airlines
Wed 9/172:35 pmITM - BOS
1 stop22h 52mAlaska Airlines
Deal found 7/27$1,232

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 July 29, 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

Sat 9/6

6:30 pm-4:25 pm

2 stops32h 55m

Osaka Kansai Intl

Sat 9/20

6:05 pm-9:30 am

2 stops28h 25m

$845

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 9/3

1:40 am-9:15 pm

1 stop30h 35m

Osaka Kansai Intl

Mon 9/8

10:00 am-11:00 pm

1 stop26h 00m

$941

BostonOsaka

BOS - ITM

BOSITM

Boston Logan Intl

Sun 9/28

6:00 am-8:15 pm

2 stops25h 15m

Osaka Itami

Thu 10/9

1:00 pm-10:39 pm

2 stops22h 39m

$978

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 9/28

12:55 pm-9:00 pm

1 stop19h 05m

Osaka Kansai Intl

Mon 10/6

12:35 pm-10:10 am

1 stop34h 35m

$1,026

BostonKobe

BOS - UKB

BOSUKB

Boston Logan Intl

Thu 9/4

12:55 pm-10:10 am

1 stop32h 15m

Kobe

Mon 9/8

6:40 pm-10:10 am

1 stop28h 30m

$1,032

BostonKobe

BOS - UKB

BOSUKB

Boston Logan Intl

Wed 10/1

6:00 am-9:45 pm

2 stops26h 45m

Kobe

Tue 10/14

7:05 am-2:16 pm

2 stops20h 11m

$1,043

BostonOsaka

BOS - ITM

BOSITM

Boston Logan Intl

Mon 9/29

9:30 am-8:15 pm

2 stops21h 45m

Osaka Itami

Tue 10/7

12:00 pm-6:56 pm

2 stops19h 56m

$1,043

BostonOsaka

BOS - ITM

BOSITM

Boston Logan Intl

Mon 9/1

7:10 am-5:05 pm

2 stops20h 55m

Osaka Itami

Wed 9/17

12:00 pm-11:22 pm

2 stops24h 22m

$1,061

BostonOsaka

BOS - ITM

BOSITM

Boston Logan Intl

Fri 8/22

9:43 am-7:10 pm

2 stops20h 27m

Osaka Itami

Thu 8/28

2:00 pm-9:28 pm

2 stops20h 28m

$1,125

BostonKobe

BOS - UKB

BOSUKB

Boston Logan Intl

Tue 9/9

1:40 am-10:10 am

2 stops43h 30m

Kobe

Wed 9/17

11:10 am-11:35 pm

2 stops49h 25m

$1,195

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 36 results
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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 July 25, 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 $877). Flying from Boston to Osaka in June is currently the most expensive (average of $1,312). 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 July 29, 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 July 29, 2025.
Peruse reviews from past customers who have flown with EVA Air, Korean Air, and ANA 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.
EVA Air
8.4
Very good
1,221 reviews

Food

8.1

Overall

8.4

Boarding

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,221 reviews
EVA Air
8.4
Very good
1,221 reviews

Food

8.1

Overall

8.4

Boarding

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,121 reviews
EVA Air
8.4
Very good
1,221 reviews

Food

8.1

Overall

8.4

Boarding

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
ANA
8.4
Very good
922 reviews
EVA Air
8.4
Very good
1,221 reviews

Food

8.1

Overall

8.4

Boarding

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Japan Airlines
8.3
Very good
1,535 reviews
EVA Air
8.4
Very good
1,221 reviews

Food

8.1

Overall

8.4

Boarding

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Hainan Airlines
8.2
Very good
43 reviews
EVA Air
8.4
Very good
1,221 reviews

Food

8.1

Overall

8.4

Boarding

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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 6 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.

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

    Currently priced at $845, 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 Korean Air - these airlines can fly you to your destination from $941 and $1,026, respectively. You may be able to fly from Boston to Osaka for 34% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Boston to Osaka one-way?

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at $486. Korean Air flights start at $551 while deals on ANA start at $565 one-way.

  • 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 $877). Flying from Boston to Osaka in June is currently the most expensive (average of $1,312). 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

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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 Itami flights
Hartford to Itami flights
Hartford to Kansai Intl flights

Top 6 airlines flying from Boston to Osaka

Discover the top 6 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$807Average$925FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$817Average$1,298FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$867Average$1,139FlexibilityNo cancel feeOn-time72%
ANACheapest$979Average$1,308FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$1,056Average$1,443FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$1,239Average$1,749FlexibilityNo cancel feeOn-time79%

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