BOI - KIX

$408 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 4/19. 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 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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Everything you should know

Cheapest round-trip
$712
United Airlines
Sun 2/22Thu 2/26
BOI - KIX • 1 stop
Cheapest one-way
$408
United Airlines
Sun 4/19
BOI - KIX • 1 stop
Top airlines
United Airlines
Cheapest • from $712 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Kansai Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boise to Kansai Intl (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 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boise to Kansai Intl

Sun, Feb 22 - Thu, Feb 26
United Airlines Logo
8:41 am - 4:40 pm
BOI
-
KIX
15h 59m
1 stop
United Airlines Logo
6:35 pm - 4:07 pm
KIX
-
BOI
13h 32m
1 stop
$712United Airlines
Sun, Feb 22 - Thu, Feb 26
United Airlines Logo
8:41 am - 4:40 pm
BOI
-
KIX
15h 59m
1 stop
United Airlines Logo
6:35 pm - 8:55 pm
KIX
-
BOI
18h 20m
2 stops
$717United Airlines
Sun, Feb 22 - Thu, Feb 26
United Airlines Logo
7:11 am - 4:40 pm
BOI
-
KIX
41h 29m
2 stops
United Airlines Logo
6:35 pm - 8:55 pm
KIX
-
BOI
18h 20m
2 stops
$729United Airlines
Tue, Mar 3 - Wed, Mar 18
Korean Air Logo
8:50 am - 8:45 pm
BOI
-
KIX
19h 55m
2 stops
Korean Air Logo
2:00 pm - 9:35 pm
KIX
-
BOI
22h 35m
2 stops
$731Korean Air
Tue, Apr 14 - Tue, Apr 21
Multiple Airlines Logo
7:40 am - 10:00 pm
BOI
-
KIX
23h 20m
2 stops
Multiple Airlines Logo
9:15 pm - 10:27 pm
KIX
-
BOI
40h 12m
2 stops
$781Multiple Airlines
Sun, Apr 12 - Thu, Apr 23
Korean Air Logo
10:35 am - 5:05 pm
BOI
-
KIX
39h 30m
2 stops
Korean Air Logo
9:05 am - 7:55 pm
KIX
-
BOI
25h 50m
2 stops
$785Korean Air
Wed, Jul 1 - Wed, Jul 8
United Airlines Logo
6:20 am - 2:50 pm
BOI
-
KIX
17h 30m
1 stop
United Airlines Logo
4:55 pm - 11:59 pm
KIX
-
BOI
22h 04m
1 stop
$804United Airlines
Tue, Apr 14 - Tue, Apr 21
United Airlines Logo
6:15 am - 2:50 pm
BOI
-
KIX
17h 35m
1 stop
United Airlines Logo
4:55 pm - 9:22 pm
KIX
-
BOI
43h 27m
2 stops
$809United Airlines
Thu, Apr 16 - Thu, Apr 23
Korean Air Logo
7:05 am - 9:00 pm
BOI
-
KIX
22h 55m
2 stops
Korean Air Logo
12:35 pm - 7:55 pm
KIX
-
BOI
22h 20m
2 stops
$825Korean Air
Wed, Jul 1 - Wed, Jul 8
United Airlines Logo
5:00 am - 2:50 pm
BOI
-
KIX
18h 50m
2 stops
United Airlines Logo
4:55 pm - 10:22 pm
KIX
-
BOI
20h 27m
2 stops
$848United Airlines
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 ($712) and Korean Air ($731).

Good to know

Cheapest flight$408
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 $408 for a one-way ticket and $712 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 is the only airline alliance operating flights between Boise and Osaka.

  • 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 9215 reviews
8.1Crew
7.7Boarding
7.1Entertainment
6.6Food
7.3Comfort
Airline reviews

I was fully checked in the prior night and i was unchecked and then didn’t have a seat when I boarded. Instead of an aisle seat, I was out in the middle seat of the very last row of the plane.

2.0 MediocreJames, Jan 2026
ORD - MSP
Read more United Airlines reviews

I was fully checked in the prior night and i was unchecked and then didn’t have a seat when I boarded. Instead of an aisle seat, I was out in the middle seat of the very last row of the plane.

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

A great experience with excellent service by the crew and attention in assisting the passengers.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

The food was terrible this time. Otherwise pleasant, quiet, on-time.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

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

Information on your arrival and departure airports