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Kaua'i

$214+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIH
Jun 21 — Jun 281
Sat 6/21
Sat 6/28
1 adult, Economy
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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 June 16, 2025.

Round-trip from

$427
(Alaska Airlines)

One-way from

$214
(Alaska Airlines)

Popular in

March

Cheapest in

August

Average price

$529
From Idaho to Kaua'i
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One-way flight from Idaho to Kaua'i
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Highest demand for flights based on searches. 2% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 16, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/16. 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 9/2910:08 amBOI - LIH
1 stop27h 35mAlaska Airlines
Tue 10/72:20 pmLIH - BOI
1 stop25h 21mAlaska Airlines
Deal found 6/16$423
This Alaska Airlines deal was found by Cheapflights users on 6/15. 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 10/19:25 amGEG - LIH
1 stop15h 05mAlaska Airlines
Wed 10/152:20 pmLIH - GEG
1 stop19h 44mAlaska Airlines
Deal found 6/15$427
This Delta deal was found by Cheapflights users on 6/14. 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.
Mon 12/82:00 pmBOI - LIH
1 stop9h 22mDelta
Tue 12/910:45 pmLIH - BOI
1 stop8h 16mDelta
Deal found 6/14$431
This Delta deal was found by Cheapflights users on 6/16. 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.
Mon 8/251:21 pmGEG - LIH
1 stop8h 42mDelta
Tue 9/29:40 pmLIH - GEG
1 stop7h 55mDelta
Deal found 6/16$467
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Mon 10/62:44 pmBOI - LIH
1 stop9h 11mUnited Airlines
Mon 10/1310:58 pmLIH - BOI
1 stop10h 50mUnited Airlines
Deal found 6/14$476
This Southwest deal was found by Cheapflights users on 6/13. 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.
Sun 8/246:30 amBOI - LIH
1 stop10h 20mSouthwest
Thu 8/2810:00 amLIH - BOI
1 stop9h 05mSouthwest
Deal found 6/13$497
This Hawaiian Airlines deal was found by Cheapflights users on 6/14. 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.
Fri 8/221:40 pmGEG - LIH
1 stop10h 50mHawaiian Airlines
Thu 8/2810:30 pmLIH - GEG
1 stop7h 44mHawaiian Airlines
Deal found 6/14$514
This Alaska Airlines deal was found by Cheapflights users on 6/15. 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.
Thu 10/303:56 pmIDA - LIH
2 stops21h 50mAlaska Airlines
Tue 11/44:36 pmLIH - IDA
2 stops19h 43mAlaska Airlines
Deal found 6/15$524
This Hawaiian Airlines deal was found by Cheapflights users on 6/14. 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.
Mon 10/61:42 pmBOI - LIH
1 stop11h 49mHawaiian Airlines
Mon 10/1310:31 pmLIH - BOI
1 stop8h 38mHawaiian Airlines
Deal found 6/14$527
This Alaska Airlines deal was found by Cheapflights users on 6/15. 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 8/2710:16 amSUN - LIH
1 stop15h 14mAlaska Airlines
Sat 9/611:01 amLIH - SUN
2 stops18h 33mAlaska Airlines
Deal found 6/15$581
This Delta deal was found by Cheapflights users on 6/16. 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.
Thu 8/147:05 amLWS - LIH
2 stops13h 13mDelta
Tue 8/199:40 pmLIH - LWS
2 stops12h 39mDelta
Deal found 6/16$728
This United Airlines deal was found by Cheapflights users on 6/16. 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.
Mon 8/255:15 amGEG - LIH
3 stops33h 10mUnited Airlines
Tue 9/25:30 pmLIH - GEG
2 stops14h 08mUnited Airlines
Deal found 6/16$900

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 June 16, 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

Tue 10/28

8:42 am-9:46 am

1 stop29h 04m

Lihue

Mon 11/3

4:06 pm-10:08 pm

1 stop27h 02m

$423

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Mon 12/8

2:00 pm-8:22 pm

1 stop9h 22m

Lihue

Thu 12/11

10:45 pm-10:01 am

1 stop8h 16m

$431

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Mon 8/25

5:46 pm-6:18 am

2 stops15h 32m

Lihue

Tue 9/2

10:30 pm-11:30 am

1 stop10h 00m

$436

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Mon 8/25

1:21 pm-7:03 pm

1 stop8h 42m

Lihue

Tue 9/2

9:40 pm-8:35 am

1 stop7h 55m

$467

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Mon 10/6

2:44 pm-7:55 pm

1 stop9h 11m

Lihue

Mon 10/13

10:58 pm-1:48 pm

1 stop10h 50m

$476

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Sun 8/24

6:30 am-12:50 pm

1 stop10h 20m

Lihue

Thu 8/28

10:00 am-11:05 pm

1 stop9h 05m

$497

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Fri 8/22

1:40 pm-9:30 pm

1 stop10h 50m

Lihue

Thu 8/28

10:30 pm-9:14 am

1 stop7h 44m

$514

Idaho FallsLihue

IDA - LIH

IDALIH

Idaho Falls Fanning Field

Thu 10/30

3:56 pm-9:46 am

2 stops21h 50m

Lihue

Tue 11/4

4:36 pm-3:19 pm

2 stops19h 43m

$524

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Mon 10/6

1:42 pm-9:31 pm

1 stop11h 49m

Lihue

Mon 10/13

10:31 pm-11:09 am

1 stop8h 38m

$527

HaileyLihue

SUN - LIH

SUNLIH

Hailey Sun Valley-Friedman

Wed 8/27

10:16 am-9:30 pm

1 stop15h 14m

Lihue

Sat 9/6

11:01 am-9:34 am

2 stops18h 33m

$581

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/14

Showing 1-10 of 25 results
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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 $689). 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 June 16, 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 June 16, 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
10,000 reviews

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,278 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,963 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,500 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,801 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 ($214), United Airlines ($216), and Delta ($292).

  • 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 $689). 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

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Top 5 airlines flying from Idaho to Kaua'i

Discover the top 5 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 June 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$280Average$668FlexibilityNo cancel feeOn-time85%
DeltaCheapest$321Average$897FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$381Average$646FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$423Average$850FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$450Average$642FlexibilityNo cancel feeOn-time63%

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