BOI - KIX

$537 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 3/29. 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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41 299 237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$706
United Airlines
Wed 2/25Wed 3/4
BOI - KIX • 1 stop
Cheapest one-way
$537
STARLUX Airlines
Sun 3/29
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!
Flight Deals
Useful Info
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

Wed, Feb 25 - Wed, Mar 4
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
$706United Airlines
Wed, Feb 25 - Wed, Mar 4
United Airlines Logo
5:00 am - 4:40 pm
BOI
-
KIX
19h 40m
2 stops
United Airlines Logo
6:35 pm - 10:06 am
KIX
-
BOI
31h 31m
2 stops
$710United Airlines
Mon, Mar 2 - Mon, Mar 9
United Airlines Logo
8:41 am - 4:40 pm
BOI
-
KIX
15h 59m
1 stop
United Airlines Logo
6:35 pm - 7:12 pm
KIX
-
BOI
15h 37m
1 stop
$711United Airlines
Mon, Mar 2 - Mon, Mar 9
United Airlines Logo
8:41 am - 4:40 pm
BOI
-
KIX
15h 59m
1 stop
United Airlines Logo
6:35 pm - 9:59 pm
KIX
-
BOI
18h 24m
2 stops
$716United Airlines
Sat, Feb 28 - Sat, Mar 7
Multiple Airlines Logo
8:12 pm - 6:50 pm
BOI
-
KIX
30h 38m
1 stop
Multiple Airlines Logo
5:50 pm - 11:59 pm
KIX
-
BOI
22h 09m
2 stops
$857Multiple Airlines
Wed, Feb 25 - Wed, Apr 1
United Airlines Logo
8:41 am - 4:40 pm
BOI
-
KIX
15h 59m
1 stop
United Airlines Logo
4:55 pm - 11:06 am
KIX
-
BOI
33h 11m
1 stop
$889United Airlines
Wed, Feb 25 - Wed, Apr 1
United Airlines Logo
8:41 am - 4:40 pm
BOI
-
KIX
15h 59m
1 stop
United Airlines Logo
8:30 am - 11:06 am
KIX
-
BOI
41h 36m
2 stops
$891United Airlines
Wed, Feb 25 - Wed, Apr 1
United Airlines Logo
5:00 am - 4:40 pm
BOI
-
KIX
19h 40m
2 stops
United Airlines Logo
8:30 am - 11:06 am
KIX
-
BOI
41h 36m
2 stops
$896United Airlines
Sun, Feb 15 - Thu, Feb 19
Korean Air Logo
8:50 am - 10:45 am
BOI
-
KIX
33h 55m
2 stops
Korean Air Logo
11:55 am - 1:11 pm
KIX
-
BOI
17h 16m
2 stops
$932Korean Air
Sun, Feb 15 - Thu, Feb 19
Korean Air Logo
8:50 am - 5:00 pm
BOI
-
KIX
40h 10m
2 stops
Korean Air Logo
11:55 am - 10:45 pm
KIX
-
BOI
26h 50m
2 stops
$933Korean Air
Useful Info

Good to know

Cheapest flight$537
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 $537 for a one-way ticket and $706 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 9163 reviews
7.3Comfort
6.6Food
7.1Entertainment
7.7Boarding
8.1Crew
Airline reviews

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

10.0 ExcellentDavid, Jan 2026
IAD - BNA
Read more United Airlines reviews

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

left on time, reasonable boarding process arrived early luggage came out quickly

I like flying first class, and United has a nice one

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

It was great with United overall except for two things. 1) It was a 5-hour flight and we were with kids, so we were asking for extra snacks. They were extremely reticent to dole them out even though there wasn't any meal and the kids were starting to hit their limit towards the end. 2) Baggage didn't arrive until 80 minutes after we landed.

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

Information on your arrival and departure airports