BOI - KIX

$358 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 11/20. 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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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

Thu, Aug 28 - Thu, Feb 12
United Airlines Logo
7:45 am - 2:50 pmBOI-KIX
16h 05m1 stop
United Airlines Logo
8:25 am - 4:31 pmKIX-BOI
24h 06m2 stops
$781United Airlines
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Thu, Aug 28 - Thu, Feb 12
 Logo
5:00 am - 2:50 pmBOI-KIX
18h 50m2 stops
 Logo
8:25 am - 4:31 pmKIX-BOI
24h 06m2 stops
Sun, Aug 31 - Sun, Sep 7
Delta Logo
5:30 am - 9:00 pmBOI-KIX
24h 30m2 stops
Delta Logo
12:35 pm - 6:16 pmKIX-BOI
20h 41m2 stops
$793Delta
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Sun, Aug 31 - Sun, Sep 7
 Logo
9:52 am - 8:30 amBOI-KIX
31h 38m2 stops
 Logo
4:15 pm - 8:21 pmKIX-BOI
43h 06m3 stops
$1,126
Find Deal
Sun, Aug 31 - Sun, Sep 7
United Airlines Logo
7:45 am - 2:50 pmBOI-KIX
16h 05m1 stop
United Airlines Logo
8:25 am - 7:09 pmKIX-BOI
25h 44m2 stops
$1,240United Airlines
Find Deal
Sun, Aug 31 - Sun, Sep 7
ANA Logo
9:52 am - 2:50 pmBOI-KIX
37h 58m1 stop
ANA Logo
4:50 pm - 4:58 pmKIX-BOI
15h 08m1 stop
$1,814ANA
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Thu, Aug 28 - Thu, Feb 12
Alaska Airlines Logo
8:10 am - 6:45 pmBOI-KIX
19h 35m1 stop
Alaska Airlines Logo
5:50 pm - 10:59 pmKIX-BOI
21h 09m1 stop
$1,821Alaska Airlines
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Thu, Aug 28 - Thu, Feb 12
 Logo
6:06 pm - 4:25 pmBOI-KIX
31h 19m3 stops
 Logo
11:30 pm - 11:06 pmKIX-BOI
39h 36m2 stops
$2,575
Find Deal
Sun, Aug 31 - Sun, Sep 7
 Logo
5:00 am - 9:00 pmBOI-KIX
25h 00m3 stops
 Logo
12:35 pm - 7:09 pmKIX-BOI
21h 34m3 stops
$7,999
Find Deal
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 ($781) and Delta ($793).

Good to know

Cheapest flight$358
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 $358 for a one-way ticket and $781 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 8864 reviews
7.7Boarding
7.0Entertainment
6.6Food
7.3Comfort
8.1Crew
Airline reviews

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

6.0 GoodLeilani, Jul 2025SFO - KOA
Read more United Airlines reviews

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

It was delayed instead of departing at 9:20pm, we departed at 11pm… putting us in Columbus after 2am! It was awful. Had I known about the delay, I could have spent some time in the United Lounge… I was starving because I started my journey in Budapest… so I was exhausted and hungry. Plus I had to make new arrangements to be picked up at the airport in Columbus, instead of midnight it was 2:30 am after getting luggage and out of airport. Not feasible. I would have just stayed in Chicago for the night and gotten a morning flight.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

The food should improve! And The flight should leave on time and not make the traveler wait.

It was great, I’m very grateful for the pilots and crew flight attendants for everything.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

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

Information on your arrival and departure airports

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