HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Kaua'i

$160+ Cheap flights from Idaho to Kaua'i

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIH
Apr 8 — Apr 151
Tue 4/8
Tue 4/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Idaho to Kaua'i with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Idaho to Kaua'i

Keep the following information in mind while searching for Idaho to Kaua'i flight deals. Data was last updated April 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$343
(Delta)

One-way from

$160
(Alaska Airlines)

Popular in

December

Cheapest in

April

Average price

$422
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Lihue flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Lihue flights.
Search Deals
From Idaho to Kaua'i
Search Deals
One-way flight from Idaho to Kaua'i
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Idaho to Kaua'i

Cheapest flights from Idaho to Kaua'i
Explore the most affordable flight options available from Idaho to Kaua'i. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2025.

This Delta deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/282:00 pmBOI - LIH
1 stop9h 22mDelta
Mon 11/39:45 pmLIH - BOI
1 stop9h 16mDelta
Deal found 4/2$341
This Hawaiian Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/207:00 amBOI - LIH
1 stop8h 55mHawaiian Airlines
Wed 5/2811:21 amLIH - BOI
1 stop8h 38mHawaiian Airlines
Deal found 4/2$399
This Alaska Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/227:00 amBOI - LIH
1 stop9h 00mAlaska Airlines
Wed 4/307:42 pmLIH - BOI
2 stops14h 05mAlaska Airlines
Deal found 4/1$400
This Alaska Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/171:40 pmGEG - LIH
1 stop10h 50mAlaska Airlines
Tue 9/2310:47 amLIH - GEG
1 stop9h 11mAlaska Airlines
Deal found 4/2$433
This Delta deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/291:25 pmGEG - LIH
1 stop8h 19mDelta
Wed 4/308:15 pmLIH - GEG
1 stop11h 20mDelta
Deal found 4/1$475
This Southwest deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/136:00 amBOI - LIH
2 stops14h 00mSouthwest
Wed 8/208:15 amLIH - BOI
2 stops11h 05mSouthwest
Deal found 4/1$541
This American Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/206:27 amGEG - LIH
1 stop11h 31mAmerican Airlines
Sun 4/279:32 pmLIH - GEG
1 stop22h 27mAmerican Airlines
Deal found 4/2$564
This Alaska Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/194:20 pmIDA - LIH
2 stops21h 33mAlaska Airlines
Sat 5/312:39 pmLIH - IDA
2 stops27h 55mAlaska Airlines
Deal found 4/1$606
This Southwest deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1910:05 amGEG - LIH
2 stops14h 15mSouthwest
Thu 5/18:15 amLIH - GEG
2 stops12h 30mSouthwest
Deal found 4/1$639
This United Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/196:50 amIDA - LIH
1 stop12h 56mUnited Airlines
Fri 4/257:26 pmLIH - IDA
1 stop10h 06mUnited Airlines
Deal found 4/2$683
This Hawaiian Airlines deal was found by Cheapflights users on 4/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/47:00 amGEG - LIH
1 stop9h 46mHawaiian Airlines
Sat 10/1110:10 pmLIH - GEG
1 stop9h 50mHawaiian Airlines
Deal found 4/2$698
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/12:11 pmBOI - LIH
3 stops25h 42mUnited Airlines
Wed 10/151:15 pmLIH - BOI
2 stops18h 22mUnited Airlines
Deal found 4/1$840

Cheapflights Fare Finder

Customize your flight search to find flights from Idaho to Kaua'i that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 3, 2025.
Use the filters below to find and compare flights from Idaho to Kaua'i that are best for you.

Fly from

Idaho

Fly to

Kaua'i

Route

Depart

Return

Price

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Sun 4/27

9:00 am-6:44 pm

1 stop13h 44m

Lihue

Mon 5/5

10:00 pm-12:30 pm

1 stop10h 30m

$343

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Tue 5/20

7:00 am-11:55 am

1 stop8h 55m

Lihue

Wed 5/28

11:21 am-11:59 pm

1 stop8h 38m

$399

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Tue 4/22

7:00 am-12:00 pm

1 stop9h 00m

Lihue

Wed 4/30

7:42 pm-1:47 pm

2 stops14h 05m

$400

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Wed 9/17

1:40 pm-9:30 pm

1 stop10h 50m

Lihue

Tue 9/23

10:47 am-10:58 pm

1 stop9h 11m

$433

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Tue 4/29

1:25 pm-6:44 pm

1 stop8h 19m

Lihue

Wed 4/30

8:15 pm-10:35 am

1 stop11h 20m

$475

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Wed 8/13

6:00 am-4:00 pm

2 stops14h 00m

Lihue

Wed 8/20

8:15 am-11:20 pm

2 stops11h 05m

$541

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Sun 4/20

6:27 am-2:58 pm

1 stop11h 31m

Lihue

Sun 4/27

9:32 pm-10:59 pm

1 stop22h 27m

$564

Idaho FallsLihue

IDA - LIH

IDALIH

Idaho Falls Fanning Field

Mon 5/19

4:20 pm-9:53 am

2 stops21h 33m

Lihue

Sat 5/31

2:39 pm-10:34 pm

2 stops27h 55m

$606

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Sat 4/19

10:05 am-9:20 pm

2 stops14h 15m

Lihue

Thu 5/1

8:15 am-11:45 pm

2 stops12h 30m

$639

Idaho FallsLihue

IDA - LIH

IDALIH

Idaho Falls Fanning Field

Sat 4/19

6:50 am-3:46 pm

1 stop12h 56m

Lihue

Fri 4/25

7:26 pm-9:32 am

1 stop10h 06m

$683

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 27 results
1
2
3

Best time to book a flight from Idaho to Kaua'i

Have a flexible travel schedule? Discover the best time to fly to Kaua'i from Idaho with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Idaho to Kaua'i

What is the cheapest month to book a flight from Idaho to Kaua'i?

Currently, January is the cheapest month in which you can book a flight from Idaho to Kaua'i (average of $440). Flying from Idaho to Kaua'i in June is currently the most expensive (average of $683). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ID to FUS?

Find hourly flight availability from Idaho to Kaua'i. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 3, 2025.

When flying from Idaho to Kaua'i, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Kaua'i by month

Plan your trip to Kaua'i by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kaua'i ranges from 2.2 - 6.7 inches per month. January is typically the wettest month, when rainfall can reach 6.7 in. June is typically the driest time to visit Kaua'i when rainfall is around 2.2 in.

Temperature in Kaua'i by month

Plan your trip to Kaua'i by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kaua'i, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

Reviews of airlines servicing Kaua'i

Get insights into the airlines that provide service to Kaua'i. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kaua'i. Reviews last updated April 3, 2025.
To help decide which airline to fly from Idaho to Kaua'i, see what other customers have to say about Alaska Airlines, Southwest and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,825 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,825 reviews
Alaska Airlines
8.0
Very good
9,825 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,274 reviews
Alaska Airlines
8.0
Very good
9,825 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,897 reviews
Alaska Airlines
8.0
Very good
9,825 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,344 reviews
Alaska Airlines
8.0
Very good
9,825 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,619 reviews
Alaska Airlines
8.0
Very good
9,825 reviews

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Idaho to Kaua'i. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Idaho to Kaua'i one-way?

    The cheapest airlines for a one-way flight from Idaho to Kaua'i are Alaska Airlines ($160), Delta ($162), and Southwest ($296).

  • Can I find deals for flights from Idaho to Kaua'i that include hotel bookings?

    Yes. In addition to deals on Idaho to Kaua'i flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Idaho to Kaua'i?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to Kaua'i.

  • Can I find deals for business class flights from Idaho to Kaua'i?

    Yes. Cheapflights offers flight deals from Idaho to Kaua'i by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Idaho to Kaua'i?

    Currently, January is the cheapest month in which you can book a flight from Idaho to Kaua'i (average of $440). Flying from Idaho to Kaua'i in June is currently the most expensive (average of $683). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho to Kaua'i

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Honolulu flights
San Francisco to Honolulu flights
John F Kennedy Intl to Honolulu flights
Seattle to Honolulu flights
Ontario to Honolulu flights
Los Angeles to Kahului flights
Los Angeles to Lihue flights
O'Hare Intl to Honolulu flights
Seattle to Kailua-Kona flights
Seattle to Kahului flights
San Diego to Honolulu flights
San Francisco to Kahului flights
Newark to Honolulu flights
Sky Harbor Intl to Honolulu flights
Los Angeles to Kailua-Kona flights
Dallas/Fort Worth to Honolulu flights
Hobby to Honolulu flights
Denver to Honolulu flights
San Jose to Honolulu flights
Atlanta to Honolulu flights
Dulles Intl to Honolulu flights
Salt Lake City to Honolulu flights
George Bush Intcntl to Honolulu flights
San Francisco to Kailua-Kona flights
Las Vegas to Honolulu flights
Seattle to Lihue flights
Portland to Honolulu flights
Oakland to Honolulu flights
Sacramento to Honolulu flights
Boston to Honolulu flights
San Francisco to Lihue flights
Minneapolis to Honolulu flights
Long Beach to Honolulu flights
Detroit to Honolulu flights
LaGuardia to Honolulu flights
Baltimore to Honolulu flights
Denver to Kahului flights
Reagan-National to Honolulu flights
San Jose to Kahului flights
San Diego to Kahului flights
San Diego to Lihue flights
Sky Harbor Intl to Kahului flights
Oakland to Kahului flights
Denver to Lihue flights
Sacramento to Kahului flights
Denver to Kailua-Kona flights
Portland to Kahului flights
Orlando to Honolulu flights
Dallas/Fort Worth to Kahului flights
O'Hare Intl to Kahului flights

Top 4 airlines flying from Idaho to Kaua'i

Discover the top 4 airlines that operate flights from Idaho to Kaua'i. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$322Average$910FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$367Average$634FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$450Average$641FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$475Average$951FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.