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$469+ 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 7/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — OSA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$728
(Air Canada)

One-way from

$469
(Air Canada)

Popular in

December

Cheapest in

November

Average price

$1,433
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 ($48 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Air Canada deal was found by Cheapflights users on 6/10. 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.
Wed 10/156:00 amBOS - KIX
2 stops21h 25mAir Canada
Thu 10/307:10 pmKIX - BOS
2 stops34h 48mAir Canada
Deal found 6/10$728
This Air Canada deal was found by Cheapflights users on 6/10. 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.
Wed 9/106:00 amBOS - ITM
2 stops23h 55mAir Canada
Fri 9/191:00 pmITM - BOS
2 stops22h 39mAir Canada
Deal found 6/10$741
This Air Canada deal was found by Cheapflights users on 6/12. 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.
Wed 11/195:17 pmBOS - KIX
3 stops58h 18mMultiple Airlines
Sat 11/297:10 pmKIX - BOS
2 stops28h 28mMultiple Airlines
Deal found 6/12$873
This Gotogate deal was found by Cheapflights users on 6/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/141:40 amBOS - KIX
1 stop24h 35mCathay Pacific
Thu 10/309:25 amKIX - BOS
1 stop26h 35mCathay Pacific
Deal found 6/10$995
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
Sun 8/248:00 amBOS - KIX
1 stop21h 45mAlaska Airlines
Sat 8/308:45 pmKIX - BOS
1 stop22h 15mAlaska Airlines
Deal found 6/10$1,081
This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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 11/96:00 amBOS - KIX
1 stop20h 35mANA
Fri 11/216:30 pmKIX - BOS
1 stop17h 08mANA
Deal found 6/9$1,101
This Air Canada deal was found by Cheapflights users on 6/10. 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.
Mon 11/36:10 amBOS - ITM
2 stops24h 10mMultiple Airlines
Sun 11/94:00 pmITM - BOS
2 stops20h 37mMultiple Airlines
Deal found 6/10$1,101
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 11/96:00 amBOS - ITM
2 stops22h 55mANA
Fri 11/211:00 pmITM - BOS
2 stops19h 48mANA
Deal found 6/11$1,107
This FlightHub deal was found by Cheapflights users on 6/10. 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.
Wed 10/159:30 amBOS - UKB
2 stops23h 15mANA
Thu 10/307:05 amUKB - BOS
2 stops20h 03mANA
Deal found 6/10$1,119
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Sun 11/98:30 pmBOS - KIX
1 stop30h 05mUnited Airlines
Fri 11/216:30 pmKIX - BOS
1 stop20h 18mUnited Airlines
Deal found 6/10$1,131
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Wed 10/86:00 amBOS - ITM
2 stops22h 05mUnited Airlines
Wed 10/1512:00 pmITM - BOS
3 stops31h 00mUnited Airlines
Deal found 6/9$1,138
This Hawaiian Airlines deal was found by Cheapflights users on 6/9. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/38:00 amBOS - KIX
1 stop21h 45mHawaiian Airlines
Thu 7/108:45 pmKIX - BOS
1 stop22h 15mHawaiian Airlines
Deal found 6/9$1,156

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 June 12, 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 9/10

6:00 am-4:25 pm

2 stops21h 25m

Osaka Kansai Intl

Fri 9/19

6:05 pm-9:30 am

2 stops28h 25m

$735

BostonOsaka

BOS - ITM

BOSITM

Boston Logan Intl

Wed 9/10

6:00 am-6:55 pm

2 stops23h 55m

Osaka Itami

Fri 9/19

1:00 pm-10:39 pm

2 stops22h 39m

$741

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Wed 9/10

6:00 am-8:30 pm

3 stops25h 30m

Osaka Kansai Intl

Fri 9/19

7:35 am-11:40 pm

3 stops29h 05m

$1,039

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 9/9

1:40 am-1:00 pm

1 stop22h 20m

Osaka Kansai Intl

Fri 9/19

9:10 am-11:00 pm

1 stop26h 50m

$1,050

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 8/24

8:00 am-6:45 pm

1 stop21h 45m

Osaka Kansai Intl

Sat 8/30

8:45 pm-6:00 am

1 stop22h 15m

$1,081

BostonKobe

BOS - UKB

BOSUKB

Boston Logan Intl

Sat 8/30

9:30 am-9:45 pm

2 stops23h 15m

Kobe

Wed 9/17

7:05 am-2:40 pm

2 stops20h 35m

$1,149

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Sun 8/24

7:45 am-7:30 pm

2 stops22h 45m

Osaka Kansai Intl

Sat 8/30

8:25 am-11:56 pm

2 stops28h 31m

$1,152

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Thu 7/3

8:00 am-6:45 pm

1 stop21h 45m

Osaka Kansai Intl

Thu 7/10

8:45 pm-6:00 am

1 stop22h 15m

$1,156

BostonOsaka

BOS - ITM

BOSITM

Boston Logan Intl

Sun 8/24

6:02 am-8:15 pm

2 stops25h 13m

Osaka Itami

Sat 8/30

12:00 pm-11:56 pm

2 stops24h 56m

$1,163

BostonOsaka

BOS - KIX

BOSKIX

Boston Logan Intl

Tue 7/8

7:35 am-7:30 pm

2 stops46h 55m

Osaka Kansai Intl

Tue 7/15

4:55 pm-11:59 pm

1 stop20h 04m

$1,172

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 41 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 June 9, 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 $888). Flying from Boston to Osaka in June is currently the most expensive (average of $1,324). 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 June 12, 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.

Rainfall in Osaka by month

Plan your trip to Osaka by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Osaka ranges from 1.6 - 7.9 inches per month. June is typically the wettest month, when rainfall can reach 7.9 in. January is typically the driest time to visit Osaka when rainfall is around 1.6 in.

Temperature in Osaka by month

Plan your trip to Osaka by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Osaka, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

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 June 12, 2025.
Peruse reviews from past customers who have flown with Korean Air, Japan Airlines 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.
Korean Air
8.4
Very good
1,088 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Korean Air
8.4
Very good
1,088 reviews
Korean Air
8.4
Very good
1,088 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Japan Airlines
8.3
Very good
1,490 reviews
Korean Air
8.4
Very good
1,088 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
ANA
8.3
Very good
882 reviews
Korean Air
8.4
Very good
1,088 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Alaska Airlines
8.0
Very good
10,000 reviews
Korean Air
8.4
Very good
1,088 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Hawaiian Airlines
7.9
Good
2,494 reviews
Korean Air
8.4
Very good
1,088 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

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 $728, 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 Alaska Airlines - these airlines can fly you to your destination from $995 and $1,081, respectively. You may be able to fly from Boston to Osaka for 43% 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 $469. Etihad Airways flights start at $539 while deals on Alaska Airlines start at $587 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 $888). Flying from Boston to Osaka in June is currently the most expensive (average of $1,324). 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 Boston?

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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 Kansai Intl flights
Hartford to Itami 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$807Average$925FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$867Average$1,125FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$929Average$1,530FlexibilityNo cancel feeOn-time67%
ANACheapest$979Average$1,308FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$1,056Average$1,443FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$1,239Average$1,413FlexibilityNo cancel feeOn-time79%

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