BOI - KIX

$915 Find Cheap Flights from Boise to Osaka

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to Kansai Intl departing on 4/29. 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
$859
Delta
Wed 4/29Fri 5/8
BOI - KIX • 2 stops
Cheapest one-way
$911
China Airlines
Sun 3/29
BOI - KIX • 2 stops
Top airlines
Delta
Cheapest • from $859 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boise and Kansai Intl. You'll need at least 1 connection.
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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
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

Wed, Apr 29 - Fri, May 8
Delta Logo
4:55 pm - 8:45 pm
BOI
-
KIX
36h 50m
2 stops
Delta Logo
2:15 am - 10:58 pm
KIX
-
BOI
35h 43m
2 stops
$859Delta
Sun, May 3 - Sat, May 9
Delta Logo
10:41 am - 10:40 pm
BOI
-
KIX
20h 59m
2 stops
Delta Logo
2:15 am - 3:00 pm
KIX
-
BOI
27h 45m
2 stops
$889Delta
Wed, Apr 29 - Sat, May 9
Delta Logo
3:44 pm - 8:45 pm
BOI
-
KIX
38h 01m
2 stops
Delta Logo
9:05 am - 10:58 pm
KIX
-
BOI
28h 53m
2 stops
$915Delta
Sat, Sep 5 - Wed, Sep 9
United Airlines Logo
5:44 pm - 2:50 pm
BOI
-
KIX
30h 06m
2 stops
United Airlines Logo
4:55 pm - 4:48 pm
KIX
-
BOI
14h 53m
1 stop
$919United Airlines
Sat, Sep 5 - Wed, Sep 9
United Airlines Logo
11:46 am - 2:50 pm
BOI
-
KIX
36h 04m
1 stop
United Airlines Logo
4:55 pm - 4:48 pm
KIX
-
BOI
14h 53m
1 stop
$921United Airlines
Sun, Sep 13 - Wed, Sep 23
ANA Logo
8:15 am - 2:50 pm
BOI
-
KIX
15h 35m
1 stop
ANA Logo
4:55 pm - 4:48 pm
KIX
-
BOI
14h 53m
1 stop
$958ANA
Mon, Sep 7 - Wed, Sep 9
United Airlines Logo
6:23 am - 2:50 pm
BOI
-
KIX
17h 27m
1 stop
United Airlines Logo
4:55 pm - 11:50 pm
KIX
-
BOI
21h 55m
1 stop
$964United Airlines
Mon, Sep 7 - Wed, Sep 9
United Airlines Logo
8:15 am - 2:50 pm
BOI
-
KIX
15h 35m
1 stop
United Airlines Logo
9:20 am - 9:19 pm
KIX
-
BOI
26h 59m
2 stops
$966United Airlines
Mon, Sep 7 - Fri, Sep 18
United Airlines Logo
8:15 am - 2:50 pm
BOI
-
KIX
15h 35m
1 stop
United Airlines Logo
9:20 am - 4:48 pm
KIX
-
BOI
22h 28m
2 stops
$968United Airlines
Tue, Jul 7 - Tue, Jul 14
American Airlines Logo
6:20 am - 6:45 pm
BOI
-
KIX
21h 25m
2 stops
American Airlines Logo
5:45 pm - 11:11 pm
KIX
-
BOI
20h 26m
2 stops
$969American 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 Delta ($859) and United Airlines ($919).

Find deals

Good to know

Cheapest flight$859
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 $911 for a one-way ticket and $859 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 9469 reviews
8.1Crew
6.6Food
7.1Entertainment
7.7Boarding
7.3Comfort
Airline reviews

I will never fly ANA again. They lost one of my large pieces of checked luggage, the heaviest one with the most valuable items in it, and they said they will not send me an email unless they can't find it, even though the paper they gave me to track the status of my lost luggage requires a code from an email they are supposed to send me so I can do baggage tracing. They claim to be an international airline, but they also insist on calling a Japanese telephone number to confirm where to send the lost baggage if they find it. It is impossible to find an actual contact email address for customer support on their website, and their AI chatbot is unhelpful, directing you to a webpage that says it is for contact information but does not have any actual email addresses or phone numbers listed on it. My seat in economy did not recline at all, even though I was not sitting in an exit row nor the very back row. I had to sit in the fully upright position for over ten hours of international travel. Awful experience overall.

2.0 MediocreJenny, Mar 2026
BWI - SFO
Read more United Airlines reviews

I will never fly ANA again. They lost one of my large pieces of checked luggage, the heaviest one with the most valuable items in it, and they said they will not send me an email unless they can't find it, even though the paper they gave me to track the status of my lost luggage requires a code from an email they are supposed to send me so I can do baggage tracing. They claim to be an international airline, but they also insist on calling a Japanese telephone number to confirm where to send the lost baggage if they find it. It is impossible to find an actual contact email address for customer support on their website, and their AI chatbot is unhelpful, directing you to a webpage that says it is for contact information but does not have any actual email addresses or phone numbers listed on it. My seat in economy did not recline at all, even though I was not sitting in an exit row nor the very back row. I had to sit in the fully upright position for over ten hours of international travel. Awful experience overall.

No seat back entertainment. And app had a hard time getting entertainment loaded.

ticket agent lady wás very helpful , she arranged wheel chair for my elderly mother

Didn't make the flight because the first leg of my flight was canceled and the next leg was already booked.

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

Experience was great - no complaints. Took off on time, landed early. Got to the gate relatively quickly - took a little bit of extra time to deplane but nothing excessive.

Business class seats felt very cramped compared to other airlines.

Economy plus was so cramped I could not use my laptop. It was beyond bad.

OK, we were delayed and had to de plane and reboard.

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)