What airlines fly to Kaua'i?

Alaska Airlines, Delta and Southwest are the top three most popular airlines that fly to Kaua'i from Idaho according to our data. Alaska Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Kaua'i. Keep in mind that there are 5 different airlines that fly to Kaua'i on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Idaho to Kaua'i?

Delta, Alaska Airlines, and Southwest are the most popular carriers operating from Idaho to Kaua'i

When did momondo last update prices for flights from Idaho to Kaua'i?

Prices for flights from Idaho to Kaua'i are updated daily.

How many operators does momondo search for flights from Idaho to Kaua'i?

There are 5 operators available for flights from Idaho to Kaua'i as of March 2026.

How old do you have to be to fly from Idaho to Kaua'i?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Kaua'i.

What documentation or ID do you need to fly to Kaua'i?

The travel and health documents you'll need for your trip to Kaua'i may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Kaua'i. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$194 Cheap Flights from Idaho to Kaua'i in 2026

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Find the cheapest flights from Idaho to Kaua'i

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:22 am - 9:46 am

BOI

LIH

27h 24m

1 stop

1:36 pm - 10:43 pm

LIH

BOI

29h 07m

1 stop

$406Alaska Airlines

Mon, May 4 - Tue, May 12

10:22 am - 9:46 am

BOI

LIH

27h 24m

1 stop

6:00 am - 11:01 pm

LIH

BOI

13h 01m

2 stops

$431Multiple Airlines

Mon, May 4 - Tue, May 12

10:22 am - 9:46 am

BOI

LIH

27h 24m

1 stop

6:00 am - 11:01 pm

LIH

BOI

13h 01m

2 stops

$432Multiple Airlines

Mon, May 4 - Tue, May 12

7:40 am - 9:52 am

BOI

LIH

30h 12m

1 stop

12:53 pm - 4:15 pm

LIH

BOI

23h 22m

1 stop

$454Multiple Airlines

Fri, Apr 17 - Fri, Apr 24

12:17 pm - 9:45 am

GEG

LIH

24h 28m

1 stop

12:12 pm - 10:20 pm

LIH

GEG

31h 08m

1 stop

$455Alaska Airlines

Tue, Apr 14 - Tue, Apr 21

1:00 pm - 7:20 pm

GEG

LIH

9h 20m

1 stop

9:45 pm - 1:02 pm

LIH

GEG

12h 17m

1 stop

$478Delta

Wed, Aug 26 - Wed, Sep 2

6:45 am - 3:47 pm

IDA

LIH

13h 02m

1 stop

7:35 pm - 9:55 am

LIH

IDA

10h 20m

1 stop

$578United Airlines

Thu, Apr 23 - Sun, May 3

7:30 am - 7:06 pm

SUN

LIH

15h 36m

2 stops

9:55 pm - 2:34 pm

LIH

SUN

12h 39m

2 stops

$646Delta

Sat, May 9 - Sun, May 17

7:48 am - 3:15 pm

IDA

LIH

11h 27m

1 stop

9:30 pm - 11:39 pm

LIH

IDA

22h 09m

1 stop

$668American Airlines

Fri, Apr 24 - Thu, Apr 30

12:30 pm - 8:14 pm

SUN

LIH

11h 44m

1 stop

10:05 pm - 11:44 am

LIH

SUN

9h 39m

1 stop

$855United Airlines

Sat, Aug 15 - Sat, Aug 22

Delta flights from Idaho to Kaua'i

Our best Delta deals on Idaho to Kaua'i flight tickets

Delta

Aug 26

GEG1:00 pmSpokane

9h 20m

1 stop

LIH7:20 pmLihue

Sep 2

LIH9:45 pmLihue

12h 17m

1 stop

GEG1:02 pmSpokane

$478

Delta

Apr 22

BOI8:59 amBoise Air Term. Gowen Fld

12h 41m

1 stop

LIH5:40 pmLihue

Apr 29

LIH8:20 pmLihue

9h 41m

1 stop

BOI10:01 amBoise Air Term. Gowen Fld

$500

Delta

May 4

BOI7:24 amBoise Air Term. Gowen Fld

15h 16m

2 stops

LIH6:40 pmLihue

May 12

LIH9:55 pmLihue

15h 55m

2 stops

BOI5:50 pmBoise Air Term. Gowen Fld

$511

Alaska Airlines flights from Idaho to Kaua'i

Our best Alaska Airlines deals on Idaho to Kaua'i flight tickets

Alaska Airlines

May 4

BOI10:22 amBoise Air Term. Gowen Fld

27h 24m

1 stop

LIH9:46 amLihue

May 12

LIH1:36 pmLihue

29h 07m

1 stop

BOI10:43 pmBoise Air Term. Gowen Fld

$406

Alaska Airlines

Apr 14

GEG12:17 pmSpokane

24h 28m

1 stop

LIH9:45 amLihue

Apr 21

LIH12:12 pmLihue

31h 08m

1 stop

GEG10:20 pmSpokane

$455

Alaska Airlines

Apr 13

BOI9:02 amBoise Air Term. Gowen Fld

28h 50m

1 stop

LIH9:52 amLihue

Apr 20

LIH3:02 pmLihue

26h 38m

1 stop

BOI9:40 pmBoise Air Term. Gowen Fld

$464

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Mon 5/4

10:22 am-9:46 am

1 stop27h 24m

Lihue

Tue 5/12

1:36 pm-10:43 pm

1 stop29h 07m

$406

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Mon 5/4

10:22 am-9:46 am

1 stop27h 24m

Lihue

Tue 5/12

6:00 am-11:01 pm

2 stops13h 01m

$431

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Mon 5/4

10:22 am-9:46 am

1 stop27h 24m

Lihue

Tue 5/12

6:00 am-11:01 pm

2 stops13h 01m

$432

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Fri 4/17

7:40 am-9:52 am

1 stop30h 12m

Lihue

Fri 4/24

12:53 pm-4:15 pm

1 stop23h 22m

$454

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Tue 4/14

12:17 pm-9:45 am

1 stop24h 28m

Lihue

Tue 4/21

12:12 pm-10:20 pm

1 stop31h 08m

$455

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Wed 8/26

1:00 pm-7:20 pm

1 stop9h 20m

Lihue

Wed 9/2

9:45 pm-1:02 pm

1 stop12h 17m

$478

Idaho FallsLihue

IDA - LIH

IDALIH

Idaho Falls Fanning Field

Thu 4/23

6:45 am-3:47 pm

1 stop13h 02m

Lihue

Sun 5/3

7:35 pm-9:55 am

1 stop10h 20m

$578

HaileyLihue

SUN - LIH

SUNLIH

Hailey Sun Valley-Friedman

Sat 5/9

7:30 am-7:06 pm

2 stops15h 36m

Lihue

Sun 5/17

9:55 pm-2:34 pm

2 stops12h 39m

$646

Idaho FallsLihue

IDA - LIH

IDALIH

Idaho Falls Fanning Field

Fri 4/24

7:48 am-3:15 pm

1 stop11h 27m

Lihue

Thu 4/30

9:30 pm-11:39 pm

1 stop22h 09m

$668

Quickest round-trip

HaileyLihue

SUN - LIH

SUNLIH

Hailey Sun Valley-Friedman

Sat 8/15

12:30 pm-8:14 pm

1 stop11h 44m

Lihue

Sat 8/22

10:05 pm-11:44 am

1 stop9h 39m

$855

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho to Kaua'i

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Kaua'i?

In general, January is the cheapest month to fly from Idaho to Kaua'i. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $396. The month of August is another great option to travel to Kaua'i, with average flight prices from Idaho averaging around $447.

How far in advance should I book a flight to Kaua'i?

You are more likely to see cheaper flights to Kaua'i from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Kaua'i for around $578 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kaua'i from Idaho for as low as $454 on momondo.

Can stopping save me money on Idaho to Kaua'i flights?

No. A direct flight is the cheapest option for a flight between Idaho to Kaua'i.

Cheap Idaho to Kaua'i flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho to Kaua'i

Fastest flight time	8h 21m
Direct flights	None

The fastest flight from Idaho to Kaua'i takes 8h 21m

There are no direct flights from Idaho to Kaua'i. There are no popular flight routes from Idaho to Kaua'i.

Search flight deals

When did momondo last update prices for flights from Idaho to Kaua'i?
Prices for flights from Idaho to Kaua'i are updated daily.
How many operators does momondo search for flights from Idaho to Kaua'i?
There are 5 operators available for flights from Idaho to Kaua'i as of March 2026.
How old do you have to be to fly from Idaho to Kaua'i?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Kaua'i.
What documentation or ID do you need to fly to Kaua'i?
The travel and health documents you'll need for your trip to Kaua'i may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Kaua'i. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Idaho to Kaua'i?
momondo data reveals that the most frequently booked plane model on the route from Idaho to Kaua'i is Boeing 737-800 Passenger/BBJ2 (winglets), representing 18.62% of all bookings. The subsequent popular models are Embraer 175 at 16.86%, Embraer 175 (Enhanced Winglets) at 13.64%, and Boeing 737 MAX 8 at 11.06%.

Best airlines flying from Idaho to Kaua'i

Compare and see reviews for airlines that fly from Idaho to Kaua'i with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $227	Free Cancellation	Rating 7.4 9,491 reviews	Search United Airlines flights
Hawaiian Airlines	PriceFrom $240	Free Cancellation	Rating 7.8 2,839 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $296	Free Cancellation	Rating 7.9 8,341 reviews	Search Delta flights
Alaska Airlines	PriceFrom $379	Free Cancellation	Rating 7.9 12,121 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $410	Free Cancellation	Rating 8.0 4,331 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to Kaua'i?

Finding the right flight to Kaua'i from Idaho is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Kaua'i quick and easy, saving you time and money.

Can I find flights from Idaho to Kaua'i with flexible booking policies on momondo?

Yes. All flights to Kaua'i from Idaho on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Idaho to Kaua'i?

momondo helps you find the best flight between Idaho and Kaua'i by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Idaho to Kaua'i right now. Can momondo alert me if prices change?

Price alerts on flights to Kaua'i from Idaho are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.