BOI - KIX

$340 Find Cheap Flights from Boise 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 Boise to Kansai Intl departing on 11/18. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to Osaka, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to Osaka, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Boise to Osaka (BOI-KIX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise 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 Boise to Kansai Intl

Sun, Feb 8 - Sun, Feb 22
 Logo
7:00 pm - 6:50 pmBOI-KIX
31h 50m1 stop
 Logo
5:50 pm - 12:04 pmKIX-BOI
34h 14m1 stop
Sun, Feb 8 - Sun, Feb 22
United Airlines Logo
7:25 am - 4:40 pmBOI-KIX
17h 15m1 stop
United Airlines Logo
6:35 pm - 9:43 amKIX-BOI
31h 08m2 stops
$705United Airlines
Find Deal
Sun, Feb 8 - Sun, Feb 22
United Airlines Logo
10:15 am - 7:25 pmBOI-KIX
41h 10m2 stops
United Airlines Logo
6:35 pm - 9:43 amKIX-BOI
31h 08m2 stops
$712United Airlines
Find Deal
Thu, Jan 29 - Mon, Feb 2
United Airlines Logo
7:25 am - 4:40 pmBOI-KIX
17h 15m1 stop
United Airlines Logo
6:35 pm - 9:23 pmKIX-BOI
18h 48m1 stop
$778United Airlines
Find Deal
Thu, Jan 29 - Mon, Feb 2
Delta Logo
5:55 am - 12:50 pmBOI-KIX
38h 55m2 stops
Delta Logo
11:55 am - 11:58 pmKIX-BOI
28h 03m2 stops
$793Delta
Find Deal
Thu, Jan 29 - Mon, Feb 2
Korean Air Logo
8:40 am - 12:50 pmBOI-KIX
36h 10m2 stops
Korean Air Logo
6:10 pm - 11:04 pmKIX-BOI
44h 54m2 stops
$798Korean Air
Find Deal
Fri, Sep 26 - Mon, Sep 29
Delta Logo
9:00 am - 11:20 amBOI-KIX
35h 20m2 stops
Delta Logo
12:35 pm - 11:00 pmKIX-BOI
25h 25m2 stops
$944Delta
Find Deal
Fri, Oct 17 - Fri, Oct 24
Korean Air Logo
4:00 pm - 9:30 amBOI-KIX
50h 30m2 stops
Korean Air Logo
12:35 pm - 4:06 pmKIX-BOI
18h 31m2 stops
$1,123Korean Air
Find Deal
Sat, Nov 22 - Sat, Nov 29
Air Canada Logo
6:20 am - 5:40 pmBOI-KIX
43h 20m2 stops
Air Canada Logo
7:25 pm - 11:28 pmKIX-BOI
44h 03m2 stops
$1,232Air Canada
Find Deal
Fri, Sep 26 - Mon, Sep 29
Alaska Airlines Logo
8:10 am - 6:45 pmBOI-KIX
19h 35m1 stop
Alaska Airlines Logo
5:55 pm - 10:54 pmKIX-BOI
19h 59m1 stop
$1,657Alaska Airlines
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $705 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$699
Multiple Airlines
Sun 2/8Sun 2/22
BOI - KIX • 1 stop
Cheapest one-way
$340
Air Canada
Tue 11/18
BOI - KIX • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Kansai Intl!
Booking Insights

KAYAK's insights & trends for Boise to Kansai Intl flights

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

Which airlines provide the cheapest flights from Boise to Osaka?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Boise to Osaka were found on United Airlines ($705) and Delta ($793).

Good to know

Cheapest flight$340
Flight from Boise to Osaka

When to book flights from Boise to Kansai Intl

Are your dates flexible? Find out the best times to travel from Boise 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 Boise to Osaka flights

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

    In the last 3 days, the lowest price for a flight from Boise to Osaka Kansai Intl Airport was $340 for a one-way ticket and $699 for a round-trip.

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

    Yes

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

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

  • Which airline alliances offer flights from Boise to Osaka?

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

  • How does KAYAK find such low prices on flights from Boise 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 Boise to Osaka.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Osaka from Boise 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 Boise 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 Boise with another airline. Booking your flights between Boise 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 Boise 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 Boise up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Boise to Kansai Intl

 
See real verified KAYAK customer reviews for airlines flying from Boise 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 Boise 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.
7.4
United AirlinesOverall score based on 8937 reviews
7.3Comfort
7.1Entertainment
7.7Boarding
8.1Crew
6.6Food
Airline reviews

IAD with the archaic people movers is just a place to be avoided.

10.0 ExcellentThomas, Aug 2025CMH - IAD
Read more United Airlines reviews

IAD with the archaic people movers is just a place to be avoided.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Tastless food and too obvious lack of enthusiasm for service in the economy vesus business class

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

I had no checked baggage but was required to hand over carry on baggage at the door of the plane. There was a lot of overboard space in the plane and I was one of the last ones. I ran to get my carry on but it was gone. I was given back at the plane door in Toronto, so the wait was not as long as it would have been at the carousel.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

I flew with my dog and had already purchased my dog’s ticket. Even that morning I had called costumer service to insure that my husband and I had seats together since the website was giving me an error when choosing our seats and the representative mentioned our dog. I showed up early to the airport and when I got to the gate and we started boarding I was help back and told that I was supposed to have a yellow tag and that I should have checked in at the counter for them to give me that tag. I was not aware of this, the representative on the phone did not say anything. Nor did I see it anywhere in the checking process online, so if you travel with a pet and are not checking in luggage, just know that you still have to go to the check in counter when arriving at the airport unless you want to be the last one to board and not have room for your carry on in the overhead bins. Other than that, I had a great experience.

Once we got in the air the pilot made up some of the time of the delay. So that was really nice.

We had a layover from YVR to Denver. We bought 4 bottles of Absolut Vodka at the YVR Duty Free for $116.20, after going through security and American Customs Pre Clearance at YVR, Vancouver. When we landed in Denver, United put us behind the American Customs as well as TSA again for some reason. We were forced to go through American Customs and TSA again. TSA confiscated our rightfully owned Duty Free Absolut Vodka bottles. Because United incorrectly forced our flight behind American border and TSA again, we missed the connecting flight. After United put us on a later flight, we eventually arrived in Chicago very late, with hardly any sleep. I am looking for compensation from United for our incorrectly confiscated Absolut Vodka bottles worth $116.20, as well as compensation for incorrectly putting us behind American Customs and TSA again, causing us to miss our connecting flight, making us arrive extremely late in Chicago.

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

Everything you need to know for your flight from Boise to Kansai Intl

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