$151 Cheap Flights from Kailua-Kona (KOA) to Boise (BOI)

View $151 flight on Thu, Nov 13, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Kailua-Kona to Boise (KOA-BOI)

Prices were available within the past 7 days and start at $151 for one-way flights and $321 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Wed, Sep 10 - Thu, Sep 18
KOA
Kona Coast
BOI
Boise
$321 Roundtrip, found 9 hours ago
$321
Roundtrip
found 9 hours ago
Select Southwest Airlines flight, departing Wed, Sep 10 from Kona Coast to Boise, returning Thu, Sep 18, priced at $321 found 9 hours ago
Delta
Wed, May 7 - Wed, May 14
KOA
Kona Coast
BOI
Boise
$328 Roundtrip, found 4 days ago
$328
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, May 7 from Kona Coast to Boise, returning Wed, May 14, priced at $328 found 4 days ago
United
Thu, Sep 11 - Fri, Sep 19
KOA
Kona Coast
BOI
Boise
$332 Roundtrip, found 3 hours ago
$332
Roundtrip
found 3 hours ago
Select United flight, departing Thu, Sep 11 from Kona Coast to Boise, returning Fri, Sep 19, priced at $332 found 3 hours ago
Delta
Wed, Sep 10 - Thu, Sep 18
KOA
Kona Coast
BOI
Boise
$332 Roundtrip, found 9 hours ago
$332
Roundtrip
found 9 hours ago
Select Delta flight, departing Wed, Sep 10 from Kona Coast to Boise, returning Thu, Sep 18, priced at $332 found 9 hours ago
Delta
Thu, Sep 11 - Fri, Sep 19
KOA
Kona Coast
BOI
Boise
$337 Roundtrip, found 3 hours ago
$337
Roundtrip
found 3 hours ago
Select Delta flight, departing Thu, Sep 11 from Kona Coast to Boise, returning Fri, Sep 19, priced at $337 found 3 hours ago
Southwest Airlines
Wed, Sep 10 - Thu, Sep 18
KOA
Kona Coast
BOI
Boise
$341 Roundtrip, found 9 hours ago
$341
Roundtrip
found 9 hours ago
Select Southwest Airlines flight, departing Wed, Sep 10 from Kona Coast to Boise, returning Thu, Sep 18, priced at $341 found 9 hours ago
Alaska Airlines
Wed, Sep 10 - Thu, Sep 18
KOA
Kona Coast
BOI
Boise
$343 Roundtrip, found 9 hours ago
$343
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Wed, Sep 10 from Kona Coast to Boise, returning Thu, Sep 18, priced at $343 found 9 hours ago
Delta
Tue, Nov 4 - Thu, Nov 13
KOA
Kona Coast
BOI
Boise
$347 Roundtrip, found 4 days ago
$347
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Nov 4 from Kona Coast to Boise, returning Thu, Nov 13, priced at $347 found 4 days ago
United
Wed, May 28 - Tue, Jun 3
KOA
Kona Coast
BOI
Boise
$362 Roundtrip, found 1 day ago
$362
Roundtrip
found 1 day ago
Select United flight, departing Wed, May 28 from Kona Coast to Boise, returning Tue, Jun 3, priced at $362 found 1 day ago
Hawaiian Airlines
Tue, May 6 - Wed, May 7
KOA
Kona Coast
BOI
Boise
$378 Roundtrip, found 1 day ago
$378
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Tue, May 6 from Kona Coast to Boise, returning Wed, May 7, priced at $378 found 1 day ago
Flights from Kailua-Kona (KOA) to Boise (BOI)
Origin airport
Kona Intl.
Destination airport
Boise
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, Southwest Airlines, United
Roundtrip price
$321
Distance
2821 mi

Kailua-Kona to Boise Flights

The cheapest times to fly from Kailua-Kona to Boise

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Kailua-Kona to Boise are during the month of September. You can find some of the cheapest flights from Kailua-Kona to Boise with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Kailua-Kona to Boise

Sunday is one of the best days to book for cheap flights from Kailua-Kona to Boise: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Kailua-Kona to Boise

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Kailua-Kona to Boise in 2025. You can also book with separate airlines for your outbound and return journeys, from $151 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Kailua-Kona to Boise flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Kailua-Kona to Boise airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

Is it cheaper to buy a plane ticket from Ellison Onizuka Kona Intl. Airport at Keāhole to Boise Airport (BOI) last minute?
When it’s time to book your flights, it pays to be prepared. While it’s possible to pick up a deal on a KOA to Boise Airport flight at the last minute, prices usually don’t get cheaper as the date of departure nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to book a domestic flight is between 28 – 35 days in advance. For international flights it’s between three and four months.
What airports do you fly into for Boise from Kailua-Kona?
With Boise Airport (BOI), Mountain Home, ID (MUO-Mountain Home Air Force Base) and Ontario, OR (ONO-Ontario Municipal) to choose from, flying from Kailua-Kona to Boise is a breeze. The city’s main terminal, Boise Airport (BOI), is around 3 mi south of the downtown area. Besides ticket prices, consider things like transportation options from the airport and the distance to your hotel when deciding where to fly into. Get your Boise vacation off to an exciting start by visiting Boise State University and Albertsons Stadium.
Can I change the date of my flight from Ellison Onizuka Kona Intl. Airport at Keāhole to BOI?
Easily make changes to your Kona Intl. Airport (KOA) to Boise Airport journey via the Expedia Trips portal. But before you begin, look over the ticket rules in your itinerary to learn what the carrier will let you do and what charges may apply. Some airlines charge a change fee per person, plus any difference in prices. But if you booked in the last 24 hours, you may be able to cancel for free and arrange new flights. You can also head to our Customer Service portal for more handy information and to chat with our Virtual Agent.

Explore a world of travel with Expedia

*Available to One Key members.