BOS - OSA

$445 Find Cheap Flights from Boston to Osaka

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Osaka departing on 1/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Osaka

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Osaka.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Osaka.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Osaka (BOS-OSA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Osaka that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Osaka

Sun, Jan 11 - Mon, Jan 26
Cathay Pacific Logo
12:30 am - 3:15 pmBOS-KIX
24h 45m1 stop
Cathay Pacific Logo
6:05 pm - 10:00 pmKIX-BOS
41h 55m1 stop
$967Cathay Pacific
Find Deal
Sun, Jan 11 - Fri, Feb 13
ANA Logo
12:45 pm - 8:00 amBOS-UKB
29h 15m2 stops
ANA Logo
7:05 am - 2:30 pmUKB-BOS
21h 25m2 stops
$971ANA
Find Deal
Fri, Dec 5 - Wed, Dec 24
Multiple Airlines Logo
6:15 am - 10:20 pmBOS-KIX
26h 05m2 stops
Multiple Airlines Logo
3:00 pm - 10:37 pmKIX-BOS
21h 37m2 stops
$1,023Multiple Airlines
Find Deal
Sun, Jan 11 - Mon, Jan 26
Multiple Airlines Logo
12:30 am - 2:55 pmBOS-KIX
24h 25m2 stops
Multiple Airlines Logo
8:00 am - 12:40 amKIX-BOS
30h 40m3 stops
$1,047Multiple Airlines
Find Deal
Fri, Jan 30 - Sat, Feb 7
Air Canada Logo
6:15 am - 7:10 pmBOS-ITM
22h 55m2 stops
Air Canada Logo
3:00 pm - 10:37 pmITM-BOS
21h 37m2 stops
$1,060Air Canada
Find Deal
Sun, Jan 11 - Fri, Feb 13
United Airlines Logo
6:17 pm - 4:40 pmBOS-KIX
32h 23m2 stops
United Airlines Logo
6:35 pm - 9:44 pmKIX-BOS
17h 09m1 stop
$1,068United Airlines
Find Deal
Sun, Dec 7 - Tue, Dec 23
Air Canada Logo
7:55 pm - 8:20 pmBOS-ITM
34h 25m2 stops
Air Canada Logo
2:00 pm - 9:32 amITM-BOS
33h 32m2 stops
$1,106Air Canada
Find Deal
Mon, Jan 12 - Mon, Jan 26
United Airlines Logo
9:30 am - 4:40 pmBOS-KIX
41h 10m2 stops
United Airlines Logo
6:35 pm - 9:42 pmKIX-BOS
17h 07m1 stop
$1,118United Airlines
Find Deal
Mon, Jan 12 - Mon, Jan 26
Alaska Airlines Logo
5:20 pm - 6:45 pmBOS-KIX
35h 25m3 stops
Alaska Airlines Logo
8:45 pm - 3:20 pmKIX-BOS
32h 35m2 stops
$1,189Alaska Airlines
Find Deal
Sun, Feb 22 - Thu, Feb 26
Alaska Airlines Logo
7:00 am - 7:55 pmBOS-ITM
22h 55m2 stops
Alaska Airlines Logo
2:40 pm - 11:59 pmITM-BOS
23h 19m2 stops
$1,431Alaska Airlines
Find Deal

Everything you should know

Top airlines
Cathay Pacific
Cheapest • from $967 (round-trip)
ANA
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
September
Cheapest • 26% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$967
Overall average: $1,236
Cathay Pacific
Sun 1/11Mon 1/26
BOS - KIX • 1 stop
Cheapest one-way
$445
Typical prices: $648-$896
Multiple Airlines
Mon 1/5
BOS - KIX • 3 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Osaka!
Booking Insights

KAYAK's insights & trends for Boston to Osaka flights

Get data-powered insights and trends into flights from Boston to Osaka to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Boston to Osaka?

The average price of all round-trip flights from Boston to Osaka clicked on KAYAK for each day over the last 12 months.

When flying from Boston to Osaka, you should consider leaving on a Wednesday and avoid Fridays if you are looking for the best rates. For your return to Boston, you’ll find the best rates on Thursdays and the most expensive ones on Fridays.

What is the cheapest month to fly from Boston to Osaka?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Osaka, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Osaka is September, where tickets cost $927 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,577 and $1,458 respectively.

Good to know

Low seasonJanuary
Cheapest flight$445
Best time to beat the crowds but there is an average 13% increase in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Boston to Osaka Kansai Intl

When to book flights from Boston to Osaka

Are your dates flexible? Find out the best times to travel from Boston to Osaka based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Osaka

  • What seat selection options are available on Cathay Pacific flights from Boston to Osaka?

    Cathay Pacific offers several seat selection options to passengers. Passengers can choose a standard seat for free during the booking process or at check-in or preferred seats, which offer more legroom or are located in a more convenient location on the aircraft. Preferred seats are subject to an additional fee and can be selected during the booking process or at check-in.

  • What is the luggage allowance on Japan Airlines flights from Boston to Osaka?

    For Economy class, passengers are typically allowed one checked bag with a maximum weight of 50 lbs on Japan Airlines flights from Boston to Osaka. Business class passengers are usually allowed two checked bags, each weighing a maximum of 70 lbs. First class passengers generally enjoy the same allowance as Business class.

  • What services does ANA offer economy passengers on flights from Boston to Osaka?

    ANA offers personal seat back entertainment systems for economy class with a vast selection of movies, TV shows, music, and games. The airline provides complimentary meals, with a choice of Western or Japanese-style cuisine. ANA also offers Wi-Fi and in-flight connectivity, allowing passengers to stay connected and access the internet during the flight.

  • How do I get from Kansai Airport (KIX) to the city center?

    The train is the most convenient and budget-friendly way to reach the city center from KIX. You can take the JR Limited Express Haruka train, which takes about 45–50 minutes to reach Osaka station. There are a number of bus services that operate between Kansai Airport and the city center. The most popular option is the airport limousine service, which takes about 50–60 minutes to reach Osaka's major hotels.

  • What is the cheapest flight from Boston to Osaka?

    In the last 3 days, the lowest price for a flight from Boston to Osaka was $445 for a one-way ticket and $967 for a round-trip.

  • Do I need a passport to fly between Boston and Osaka?

    Yes, you’ll need a passport to travel to Osaka from Boston.

  • Which airports will I be using when flying from Boston to Osaka?

    When flying out of Boston you will be using Boston Logan Intl. You will be landing at one of these airports: Osaka Itami or Osaka Kansai Intl.

  • Which aircraft models fly most regularly from Boston to Osaka?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Osaka?

    oneworld, and Star Alliance are the airline alliances operating flights between Boston and Osaka, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Boston to Osaka, ANA or Japan Airlines?

    The two airlines most popular with KAYAK users for flights from Boston to Osaka are ANA and Japan Airlines. With an average price for the route of $1,181 and an overall rating of 8.4, ANA is the most popular choice. Japan Airlines is also a great choice for the route, with an average price of $1,706 and an overall rating of 8.3.

  • How does KAYAK find such low prices on flights from Boston to Osaka?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Osaka.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Osaka?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Osaka from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Osaka?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Osaka with an airline and back to Boston with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Osaka?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Osaka from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Boston to Osaka

  • US citizens will need a visa to travel from Boston (BOS) to Osaka (OSA). The type of visa required depends on the purpose of the visit, the duration of stay, and other factors. To apply for a Japanese visa, US citizens must submit the required documents such as a valid passport, visa application form, photos, and other supporting documents depending on the type of visa applied for.
  • Air Canada allows cats and dogs to travel on flights from Boston to Osaka. There is a fee for traveling with pets, which varies depending on the type and size. You must also provide all necessary documentation for your pet, such as a health certificate, vaccinations, and any other required permits.
  • Flights from Boston to Osaka usually have layovers in various cities depending on the airline. Some common layovers for these flights include Tokyo (NRT), San Francisco (SFO), New York (JFK), Hong Kong (HKG), Vancouver (YVR), Washington (IAD), and Chicago (ORD).
  • United Airlines has a customer care program called “Special Needs” that is designed to meet the needs of passengers who require assistance or mobility aids. The airline provides wheelchairs and other mobility aids at the airport and onboard the aircraft to passengers who require them, including for flights from Boston to Osaka.
  • American Airlines offers flights from Boston to Osaka and has invested in fuel-efficient aircraft to reduce the environmental impact of their flights. The company has implemented operational measures, such as using more efficient flight paths, optimizing ground operations, and reducing weight on flights.

Reviews of the top 5 airlines serving from Boston to Osaka

 
See real verified KAYAK customer reviews for airlines flying from Boston to Osaka. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Osaka? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
ANAOverall score based on 994 reviews
7.7Food
8.6Boarding
8.2Comfort
7.9Entertainment
8.7Crew
Airline reviews

They lost my luggage on the inbound flight and then lost it again on this flight. I called online travel agent to change earlier flight to get a longer layover in Vancouver but ANA denied it

2.0 MediocreAnonymous, Oct 2025YVR - HND
Read more ANA reviews

They lost my luggage on the inbound flight and then lost it again on this flight. I called online travel agent to change earlier flight to get a longer layover in Vancouver but ANA denied it

Suite lounge in Honolulu is very exclusive and boarding from the lounge into the plane is unique. First suites were huge and comfortable. Japanese meal is like a high end omakase meal. All the staff were very kind and provided sophisticated service. Fast Track upon landing was appreciated but not needed this time because immigration was so empty and easy.

I like the service very much. The food just okay but maybe different culture who like, who don't like.

Everything was excellent. Only the fish entree in the Japanese meal was overcooked and quite dry but everything else was great

Great first time experience on this airline. Very professional staff and great service.

Warm the bread. Movies: better choices to include Chinese movies options or some of the older winners of flim festival

I was able to change my flight last minute. It was more expensive, but that was my fault. Thank you for allowing me to fly!

Business class on ANA was awesome. There lie flat seats made it easier to sleep on a 12 hour flight. Food was great and service was excellent.

The crew was very nice and polite. They made sure everybody got their meal and drinks. Even the economy class had a very adequate leg room for someone that is over 6 foot tall.

Overall it was good. Making changes to the reservation on ANA’s website was little challenging. Would like to see those features improved in the future.

I traveled business class from Lax to Narita flight Jl61. The crew was attentive and polite. Food was good quality and service was as it should be. Narita to Bengaluru Jl753was another story in business class. The cabin was darkened for the 9hr:30min flight, food was mediocre, service was below standard and crew can't speak English to save their lives. When you ask for noodles soup from Ala carte they gave cup of noodles while Lax to Narita i was served the best Ramen noodles in a big bowl. Why the disparity on this leg of the journey.....or is it because there were mostly Indian passengers and it really did not matter to Jal to bother as its a poor country and Indians refrain from speaking up? A good airline but differentiation like this brings their reputation and business down.

Japan Airlines was excellent as usual once on the plane. Cabin crew was wonderful as usual. Boarding was solid on the Honolulu leg. For Thai Airways the boarding was less organized. I was in an earlier group but they weren’t clear with the numbers or instructions. Flight crew from Japan to Thailand was very good.

Terrible. Our flight was delayed by 15 hours. We lost a full day of our vacation.

highly recommend for trip to japan only reason why i gave good not excellent is because their selection of movies and tv shows in English is more limited .

We asked for Hindu vegetarian meal in advance and the quality of the food was horrendous. Never flying JAL again!

Japan airline is excellent service .I recommend to Kayak and Japan airline to Frend.

Overall a great experience. One complain was the vegetarian food that my wife had which was mostly boiled vegetables with not much flavor.

Very accommodating and kind airline crews. The plane is also big which makes the passengers more comfortable and relax

I actually didn’t make it onto the flight. I spent quite a few hours trying to rebook the flight just to get screwed out of $5000. Fun!

We booked business class round trip from Delhi to San Diego and back. On our last leg from Bangalore to Delhi we were down graded to economy class which was big disappointment other than that everything was great.

Leg room wasn't that great. Other than that it was a good flight

Chicken pieces were too big with pasta. Need to be smaller.

Seats in the absolute back row of the plane even though we booked ages ago :( Crew was awesome though

My connecting flight was canceled or never existed. My stopover went from 1 hour and a half to 10 hours. It was a long day that I wasn't prepared for and it would have been nice to know that ahead of time. Cathay is great though. Great staff, entertainment and food.

Great entertainment system, the seat is a bit old style needs refurbishment

Boarding at the airport was not well managed. Otherwise, had a good flight sitting in the first row (which I paid for). Crew was pretty friendly, and flight was smooth.

they are deley vancouver to hankong 3 hour after honkong 20 hour stay there honkong not visa approved and they cant help to visa so we are stay in airport 20 hour even honkong staf very bad person they cant do for us 6 hour we arround they said you there you go there waste time next time i dont want to go cathay stay in honkong

I was only given 2 meals, and my screen showed that there were 3 meals. Second meal was 1-2 hours late according to the screen.

Check in process at the kiosk, crew in flight and overall comfort was good. Food selection could have been better. Flight from Hong Kong to Los Angeles did not have any vegetarian main course option, it was either sea food or chicken. Being a vegetarian I could only eat yogurt and fruit. Most international flights have one vegetarian main course dish which I found missing in Cathay Pacific menu.

Entertainment for kids was good. Good was terrible, needs lots of work.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

The person I bought the ticket for didn’t make the flight.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

Not the fault of United—weather, reroute around weather, time sitting on tarmac, arrived couple hours late, too late for train into city necessitating a much pricier cab but weather…can’t be helped.

Friendly and professional flight crew. Aside from departure delay after boarding, easy flight and smooth landing.

Great smooth flight. Had a seating change, but that was an improvement. Thanks United Airways Crew.

Snacks were just placed and many people were hungry and unaware they were available. Ran out of water bottles. Attendants not available. Missed entire meal.

The cabin crew was professional and there were plenty of movie choices, but the food was a bit sub-standard.

Pearson Airport could not properly handle all the passengers who they needed to process in order to properly get them on board. As a result, I missed the departure of my flight from Toronto. The only saving grace is that Air Canada found a flight that only delayed me by one hour. However, this was no thanks to Pearson Airport!

The flight was delayed an hour, but not because of Air Canada. The crew was polite, professional, and competent. The food was above average for Air Canada, but just fine. The stand out for me in the 10 hour flight was the entertainment package. The best of any airline I’ve experienced so far. Looking forward to my return flight to finish some more of the shows I was watching.

Very good!👍!especially the typhoon coming, the speaking Chinese language service is excellent 👍!

Not to out myself as both a child at heart and kind of a terrible person, but the Pokémon safety video was the first time I watched an airplane safety video in like a decade. It was ADORABLE!! A great way to encourage attention from young and old alike.

I had a good experience. I liked being informed about the status of my luggage

Seamless! Long but the seat back entertainment kept us all busy the whole time! Meals were excellent! Crew fantastic! Very attentive!

The whole experience what excellent, from Anjou at the ticket counter to the attendants on the flight. Although it was an older plane, it was a very good flight. One of the best flights I have had on Air Canada!

The staff could have been friendlier. And Having the flight on time would have been much more convenient.

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.