Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

BOS - KIX

$714 Find cheap flights from Boston to Osaka Kansai Intl

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 Kansai Intl departing on 5/12. 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
0 bags
Fri 6/7
Fri 6/14

Search hundreds of travel sites at once for deals on flights to Osaka Kansai Intl

 
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.
In the last 7 days travelers have searched 43,968,530 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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

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

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

Cheap flight deals from Boston to Kansai Intl (BOS-KIX)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Kansai Intl 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 and deals for you by selecting your travel dates.
Choose your dates
1:45 am - 9:25 pmBOS-KIX
30h 40m1 stop
9:10 am - 10:20 pmKIX-BOS
26h 10m1 stop
$973Cathay Pacific
Find Deal
Sun, Sep 22 - Tue, Oct 15
1:45 am - 9:25 pmBOS-KIX
30h 40m1 stop
9:10 am - 10:20 pmKIX-BOS
26h 10m1 stop
$974Cathay Pacific
Find Deal
Tue, Sep 3 - Wed, Sep 18
6:00 am - 4:20 pmBOS-KIX
21h 20m2 stops
7:00 pm - 9:37 amKIX-BOS
27h 37m2 stops
$1,151Air Canada
Find Deal
Thu, Sep 19 - Thu, Sep 26
6:05 am - 4:55 pmBOS-KIX
21h 50m2 stops
7:00 pm - 9:37 amKIX-BOS
27h 37m2 stops
$1,157Air Canada
Find Deal
Mon, Sep 23 - Tue, Oct 15
7:15 pm - 1:00 pmBOS-KIX
28h 45m3 stops
7:30 am - 7:45 amKIX-BOS
37h 15m3 stops
$1,232
Find Deal
Mon, Jun 3 - Thu, Jun 6
6:10 pm - 4:20 pmBOS-KIX
33h 10m2 stops
5:50 pm - 10:44 amKIX-BOS
29h 54m3 stops
$1,261
Find Deal
Wed, Sep 4 - Wed, Sep 18
9:50 pm - 7:00 pmBOS-KIX
32h 10m1 stop
9:55 pm - 7:55 pmKIX-BOS
35h 00m1 stop
$1,383Turkish Airlines
Find Deal
Tue, Sep 17 - Mon, Sep 30
9:50 pm - 7:00 pmBOS-KIX
32h 10m1 stop
9:55 pm - 7:55 pmKIX-BOS
35h 00m1 stop
$1,450Turkish Airlines
Find Deal
Mon, Sep 23 - Tue, Oct 15
11:30 am - 4:10 pmBOS-KIX
39h 40m3 stops
5:25 pm - 6:04 pmKIX-BOS
37h 39m3 stops
$1,543Singapore Airlines
Find Deal
Mon, Sep 9 - Sun, Sep 22
11:30 am - 8:50 amBOS-KIX
56h 20m3 stops
5:25 pm - 6:04 pmKIX-BOS
37h 39m3 stops
$1,544Singapore Airlines
Find Deal
Mon, Sep 9 - Sun, Sep 22

Flights from Boston to Kansai Intl - Travel Insights & Trends

Get data-powered insights and trends into flights from Boston to Kansai Intl 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 Kansai Intl?

The average price of all flights from Boston to Osaka Kansai Intl Airport clicked on KAYAK for each day over the last 12 months.
For Boston to Osaka Kansai Intl, Friday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Osaka Kansai Intl back to Boston, the best deals are generally found on Tuesday, with Friday being the most expensive.

What is the cheapest month to fly from Boston to Osaka Kansai Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Boston to Osaka Kansai Intl Airport, 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 Kansai Intl Airport is April, where tickets cost $1,221 on average. On the other hand, the most expensive months are December and November, where the average cost of tickets is $2,587 and $1,994 respectively.

How far in advance should I book a flight from Boston to Osaka Kansai Intl Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Boston to Osaka Kansai Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Boston to Osaka Kansai Intl Airport, you should book around 4 days before departure. For the absolute cheapest price, our data suggests you should book 7 days before departure.

Which airlines provide the cheapest flights from Boston to Osaka Kansai Intl?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from Boston to Osaka Kansai Intl found by KAYAK users in the last 72 hours was for $973 on Cathay Pacific, followed by Air Canada ($1,151). One-way flight deals have also been found from as low as $893 on Air Canada and from $954 on Hawaiian Airlines.

Good to know

Low season

November

High season

July

Cheapest flight

$714
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly with an average 11% increase in price.
Flight from Boston to Osaka Kansai Intl

When to book flights from Boston to Kansai Intl

Are your dates flexible? Find out the best times to travel from Boston to Kansai Intl 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 Boston to Osaka Kansai Intl flights

  • What is the cheapest flight from Boston to Osaka Kansai Intl Airport?

    In the last 3 days, the lowest price for a flight from Boston to Osaka Kansai Intl Airport was $714 for a one-way ticket and $973 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in Boston and on arrival in Osaka Kansai Intl.

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

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

  • Which airline alliances offer flights from Boston to Osaka Kansai Intl?

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

  • Which is the best airline for flights from Boston to Osaka, Hawaiian Airlines or Cathay Pacific?

    The two airlines most popular with KAYAK users for flights from Boston to Osaka are Hawaiian Airlines and Cathay Pacific. With an average price for the route of $1,920 and an overall rating of 8.0, Hawaiian Airlines is the most popular choice. Cathay Pacific is also a great choice for the route, with an average price of $1,606 and an overall rating of 7.8.

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

    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 Kansai Intl.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Osaka Kansai Intl 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 Kansai Intl?

    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 Kansai Intl with an airline and back to Boston with another airline. Booking your flights between Boston and KIX can sometimes prove cheaper using this method.

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

    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 Kansai Intl from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from Boston to Kansai Intl

 
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 Kansai Intl? 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 928 reviews
8.8Crew
7.8Food
8.0Entertainment
8.6Boarding
8.3Comfort
Airline reviews

The space for the seats i like it. Its not too close like other air line. The food is ok and also the staff. I'm waiting for my flight rewards point because until now i didn't recieved it.

10.0 ExcellentAnonymous, Apr 2024MNL - HND
Read more about ANA reviews

The space for the seats i like it. Its not too close like other air line. The food is ok and also the staff. I'm waiting for my flight rewards point because until now i didn't recieved it.

The staff, ground and air, at ANA was very helpful and friendly during check in, boarding and during the flight. This is the reason why I always fly ANA whenever I go to Manila. The food was not the best but the flight crew more than makes up for the shortfall.

First I will say this was really NOT an ANA flight. ANA used a UNITED jet to perform this flight. I specifically booked with ANA because I did NOT WANT TO FLY UNITED FOR INTERNATIONAL FLIGHTS. So to spend $1800.00 and then discover after booking that it was going to be handled by United was very disappointing. I will be more careful next time when I book. The interior was very cramped in economy class; the dinner meal was terrible and also had extremely small portions for an international flight - the bread roll was ice cold and stale - that salad was very wilted; I’ve never had a “snack” that was so salty that it was difficult to eat; the breakfast “waffle” was practically unrecognizable. Really horrible meals for a very expensive international flight. Bathroom floor was also pretty dirty. I’m hoping my return flight is a real ANA airplane that is cleaned and serviced by ANA personnel with ANA meals. I will never book with ANA again if they continue to use UNITED airline jets. Yuck!!!🤢

Ticket was purchased as a United Airlines flight (operated by All Nippon) like what does that even mean? Makes for a VERY confusing flight experience. For instance, what do I look for a United drop off signage and ticket counter or ANA? No explanation anywhere to be found. I also felt a little bit scammed by the obsurdely restrictive seat selection provided. Only middle seats available!! Are you kidding me!! On 6hr + 10hr flights you're forcing me into the middle seat without telling me before I purchased the ticket?? This should be illegal. And to top it off, on the Tokyo LA leg there were quite a few empty seats including window seats! I must also say, the food was a dissappointing as well for my taste, fish with rice ( mostly plain white rice) or a vegetable medly for the breakfast meal? Should be at least 4 choices and at least 1 with eggs. Outside of these issues flight was otherwise ok.

Ground and flight crew were all courteous, extremely helpful and professional. Overall, process is really organized, from boarding to disembarkation.

This is a very long flight and the first time I have flown on a Japanese airline. I was very impressed with the staff. They worked hard and offered food and drink regularly. Plane was very well cared for. The let room was good . Food was ok but better than other airlines.

It was very nice. I was a bit disappointed by the few meal services. There were probably more drink services that I missed while sleeping, but I would have liked the crew to bring more than one drink service before landing and to bring more than one drink service and coffee service after take off

The space and bed was very comfortable , flight attendants very nice. The food was not tasty at all. I ordered the rib eye and it was so tough I couldn’t cut it.

I wish the serve should leach and drink. Maybe because only 2hr

Seat was roomy enough . The Asian selection for a meal was good . The tortellini was not very good. Service was excellent. O

The overall flight went well and the aircrew was pleasant.

Cathay Pacific seems to be an airline in trouble and on its way out. Lots of broken or poorly functioning things like entertainment screens, seats, and enough well trained staff to handle a full flight. Sad...

The flight crew was exceptionally good. Personal needs were well met. The food choices were very nice.

Excellent. Planes are a little older and could get some refurbishment, but besides that everything was excellent.

While I was in great pain, the seat was sufficiently comfortable to allow me to rest and not be in so much pain.

we were upgraded which was a blessing and tender mercy for us. I fell the day before and was in extreme pain from knee to shoulder. Sitting in a more comfortable seat during the flight was an unexpected blessing and experience.

My seat was sold off to someone else. Had to wait 9 hours to catch the next filght. Definitely will never use Cathay Pacific again. Bad, very bad airline. will comment on google reviews too.

Very poor check-in experience, and flight meal service was very disappointing with no drinks service or hot meal.

Seats were very comfortable. Crew were excellent. Food very good.

Flight crew was especially thoughtful and attentive, made sure our seats were comfortable so we could rest on the long flight

Flight was delayed 2.5 hours - a big deal on an overnight when you plan to sleep.

I feel like they have upgraded the app since I last flew United and I found it to be super helpful. I had stopped flying United unless absolutely necessary and my experience on this trip indicates they have been working hard to improve their services.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

Even though we left CMI late, we mostly made up the time.

Delayed almost 4 hours for a 45 minute flight with no explanation.

Not sure why JAL partnered with American Airlines because their service is no where near similar. Flight attendants were not friendly and didn’t smile. Food was horrible…

delayed delayed delayed. was supposed to have a 2 hour layover and very nearly missed my connection.

Despite a bumpy flight the pilot was great. The rest of the crew on the other hand couldn’t care less if a passenger would colapse and die. Horrible service, robot like, lifeless…

No service due to turbulence. No entertainment on this type of aircraft. But nice old comfortable seats.

Great service, on time, professional experience. Great landing under challenging crosswind conditions at BWI. I made my connection in Charlotte despite the plane getting stuck finding a gate to park in on arrival. The only glitch -- the Airbus 320 from CLT to BWI was quite comfortable, but the larger 321 from Logan to Charlotte had minimal leg/knee room. I get that it's a high volume route but dang, couldn't even open my laptop it was so tight

Let's give credit where due: this is JAL's flight, not American's. And nothing is going to make 12+ hours in the air truly enjoyable. That said, the cabin crew was solicitous and friendly, the Japanese food excellent. The business class seats on the 787 were a little claustrophobic in bed mode -- one felt like one was lying at the bottom of a canyon -- and seat and light controls are not conveniently placed -- but comfortable enough. Restrooms were spotless and well-stocked throughout the flight. The Business Class lounge at Narita is very comfortable and quiet -- my one caveat is that a broader selection of food, including some Western selections, would have been welcome.

Uncomfortable plane, no entertainment and to board they had us standing in a line for over 20-30 minutes

Flight was delayed twice then cancelled. We were never notified of a new booking.

First time flying Air Canada and the trip was very pleasant! They did a great job getting us out of Toronto and into Rome (early!) For an international flight it was very enjoyable.

This is not a Business Class equipped airplane and even the crew apologize before take over BUT BUT Air Canada charged full business class fare

All was good, except our baggage was lost for most of a day. We are thankful that it was found quickly and delivered to our hotel. Rouge was fine outside of that problem.

You do not have a space for flight cancelled. BUT!!! Air Canada handled it great. Was booked on another airline for the next day. The original flight was booked solid. But he precheck by the maintenance found a mechanical problem and the plane was not safe to fly. It was an inconvenience to have to wait until next day but I would rather arrive safely.

Very good other than we have to wait for one crew and we’re delayed and the pilot and his co- pilot has to make a difference to be right on time arrival. Disappointed about no food service also.

I had written all my complaints on my trip from Grand Junction to Denver so I will repeat it here! I was absolutely appalled that I had to pay for a regular seat that I choose 24 hrs before boarding! Also I checked my large bag which I had to pay for as well, and by the time I boarded all the room in the bins were gone so also had to check that one. I noticed people pulling out oversized suitcases, bigger than the measurements stated for carry on, and also large pack packs stuffed full! So these people were taking up 2 or 3 spaces that the rest of us should have been able to use but couldn’t! NoTV on the flight! Thankfully I had downloaded the United Airlines app and was able to watch movies on my phone. Don’t remember the last time I flew in a plane with no movie screens!

I was appalled to have to pay for just a regular seat when I went to book 24 hrs before my flight! Because it was only an hour flight I didn’t choose a seat from Grand Junction to Denver, but I did for Toronto and had to pay just to choose a regular available seat! In my 60+ years of flying this was the first time I have heard of this. Also, allowing people to bring on “huge “ suitcases, not carry on size, but much bigger, and then a large pack pack stuffed. So they take up all the room in the overhead bins and if we are later boarding, there is no room so we have to check our small carry on. I have already paid for and checked in one bag! I certainly will not choose to fly with United again unless it is the “only” airline available!

Easy boarding, roomy seats, plenty of good food, very helpful snd friendly staff. Very smooth flight! Only thing that could have been better was to have cranberry juice. Women like this as it helps avoid UTI’s and not as sweet as other juices.

The crew was friendly, the seats are too small. Air travel is barely tolerable anymore.

Food was icecold or frozen including breakfast. Hopeless service. Rude crew.

Book cheap flights from Boston to Osaka

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Boston to Osaka found on KAYAK in the last 72 hours.
5/12Sun
2 stops
38h 30mBOS-KIX
$714
6/15Sat
3 stops
53h 53mBOS-KIX
$791
5/27Mon
2 stopsAir Canada
21h 05mBOS-KIX
$893
6/18Tue
1 stopHawaiian Airlines
21h 15mBOS-KIX
$954
5/13Mon
1 stopHawaiian Airlines
21h 45mBOS-KIX
$974
5/23Thu
2 stopsAir Canada
33h 10mBOS-KIX
$1,011
6/12Wed
1 stopTurkish Airlines
32h 10mBOS-KIX
$1,315
5/27Mon
1 stopTurkish Airlines
32h 10mBOS-KIX
$1,331
6/17Mon
1 stopCathay Pacific
22h 15mBOS-KIX
$1,481
6/11Tue
1 stopCathay Pacific
22h 15mBOS-KIX
$1,506

Search by stops

Search by airline

Search by price

Last minute flights from Boston to Kansai Intl

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Boston to Osaka that are departing in the next 10 days.
5/13Mon
multi-stopCathay Pacific
30h 40mBOS-KIX
6/5Wed
multi-stopCathay Pacific
25h 20mKIX-BOS
$1,614
5/13Mon
multi-stopCathay Pacific
30h 40mBOS-KIX
6/5Wed
multi-stopCathay Pacific
26h 10mKIX-BOS
$1,615
5/13Mon
multi-stopCathay Pacific
24h 10mBOS-KIX
6/5Wed
multi-stopCathay Pacific
25h 20mKIX-BOS
$1,630
5/9Thu
multi-stopHawaiian Airlines
21h 45mBOS-KIX
5/12Sun
multi-stopHawaiian Airlines
22h 15mKIX-BOS
$1,772
5/13Mon
multi-stopCathay Pacific
24h 10mBOS-KIX
6/5Wed
multi-stopCathay Pacific
29h 34mKIX-BOS
$2,011
5/13Mon
multi-stopCathay Pacific
24h 10mBOS-KIX
6/5Wed
multi-stopCathay Pacific
43h 17mKIX-BOS
$2,041
5/13Mon
multi-stopCathay Pacific
24h 10mBOS-KIX
6/5Wed
multi-stopCathay Pacific
43h 17mKIX-BOS
$2,042
5/9Thu
multi-stopCathay Pacific
29h 55mBOS-KIX
5/12Sun
multi-stopCathay Pacific
41h 30mKIX-BOS
$2,219
5/9Thu
multi-stopCathay Pacific
29h 55mBOS-KIX
5/12Sun
multi-stopCathay Pacific
43h 00mKIX-BOS
$2,235
5/9Thu
multi-stopCathay Pacific
29h 55mBOS-KIX
5/12Sun
multi-stopCathay Pacific
34h 15mKIX-BOS
$2,257

Search by stops

Search by airline

Search by price

Boston - Osaka Kansai Intl Flights

Departure:

Boston (undefined)United States

Destination:

Osaka Kansai Intl (KIX)Japan

Return flight deals:

Osaka Kansai Intl - Boston

Cabin classes: