BOI - KIX

$376 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 1/21. 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
Sat 1/17Wed 1/21
BOI - KIX • 1 stop
Cheapest one-way
$376
Japan Airlines
Wed 1/21
BOI - KIX • 2 stops
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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

Sat, Jan 17 - Wed, Jan 21
United Airlines Logo
7:45 am - 4:40 pm
BOI
-
KIX
16h 55m1 stop
United Airlines Logo
6:35 pm - 11:48 pm
KIX
-
BOI
21h 13m1 stop
$712United Airlines
Sat, Jan 17 - Wed, Jan 21
United Airlines Logo
5:16 pm - 4:40 pm
BOI
-
KIX
31h 24m2 stops
United Airlines Logo
6:35 pm - 10:06 am
KIX
-
BOI
31h 31m2 stops
$716United Airlines
Mon, Feb 23 - Tue, Mar 31
Delta Logo
5:35 am - 8:45 pm
BOI
-
KIX
23h 10m2 stops
Delta Logo
6:20 pm - 10:11 pm
KIX
-
BOI
42h 51m2 stops
$720Delta
Mon, Feb 16 - Wed, Apr 8
Korean Air Logo
8:50 am - 5:00 pm
BOI
-
KIX
40h 10m2 stops
Korean Air Logo
9:05 am - 6:43 pm
KIX
-
BOI
24h 38m2 stops
$725Korean Air
Sun, Feb 15 - Wed, Apr 8
Delta Logo
5:20 am - 10:45 am
BOI
-
KIX
37h 25m2 stops
Delta Logo
9:05 am - 1:05 pm
KIX
-
BOI
43h 00m2 stops
$726Delta
Sat, Jan 17 - Wed, Jan 21
Korean Air Logo
7:25 am - 8:45 pm
BOI
-
KIX
21h 20m2 stops
Korean Air Logo
6:10 pm - 6:28 pm
KIX
-
BOI
40h 18m2 stops
$731Korean Air
Sat, Feb 21 - Wed, Apr 8
Delta Logo
10:41 am - 12:50 pm
BOI
-
KIX
58h 09m2 stops
Delta Logo
9:05 am - 1:05 pm
KIX
-
BOI
43h 00m2 stops
$732Delta
Wed, Feb 25 - Tue, Mar 31
United Airlines Logo
8:41 am - 4:40 pm
BOI
-
KIX
15h 59m1 stop
United Airlines Logo
8:30 am - 9:15 pm
KIX
-
BOI
27h 45m2 stops
$759United Airlines
Wed, Feb 25 - Tue, Mar 31
United Airlines Logo
5:00 am - 4:40 pm
BOI
-
KIX
19h 40m2 stops
United Airlines Logo
4:55 pm - 9:54 am
KIX
-
BOI
31h 59m2 stops
$761United Airlines
Sun, Feb 22 - Wed, Apr 1
Multiple Airlines Logo
5:40 am - 6:50 pm
BOI
-
KIX
45h 10m2 stops
Multiple Airlines Logo
5:55 pm - 11:02 pm
KIX
-
BOI
20h 07m1 stop
$813Multiple 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 fly non-stop between Boise and Osaka Kansai Intl Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Boise to Osaka Kansai Intl Airport.

There is just one airline that flies from Boise to Osaka Kansai Intl Airport direct and that is United Airlines. The best round-trip deal found from United Airlines for the route is $597.

Find deals

Good to know

Cheapest flight$376
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 $376 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 9138 reviews
8.1Crew
7.7Boarding
6.6Food
7.3Comfort
7.1Entertainment
Airline reviews

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.

6.0 GoodTobin, Jan 2026
LAX - CUN
Read more United Airlines reviews

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.

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

Going to Tokyo was not so good. Back to Detroit was excellent.

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Everything was absolutely wonderful from check in to baggage claim. Staff was very professional and sweet. Will definitely recommend United to family and friends.

Aircraft was noisy, old and never dimmed the lights on a night flight even on business class! I flew 17 times on United and probably another 40 on other airlines United USA /Europe flights were the worst to include luggage delayed once going to europe and once coming back

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

Information on your arrival and departure airports

Boise (BOI)
Kansai Intl (KIX)