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Kaua'i

$212+ 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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIH
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$341
(Delta)

One-way from

$212
(Delta)

Popular in

March

Cheapest in

February

Average price

$544
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Lihue flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Lihue flights.
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From Idaho to Kaua'i
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One-way flight from Idaho to Kaua'i
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This Delta deal was found by Cheapflights users on 5/1. 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.
Wed 10/152:00 pmBOI - LIH
1 stop9h 22mDelta
Thu 10/239:45 pmLIH - BOI
1 stop8h 16mDelta
Deal found 5/1$341
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 8/276:35 amBOI - LIH
2 stops13h 17mAlaska Airlines
Fri 9/510:50 amLIH - BOI
1 stop20h 51mAlaska Airlines
Deal found 4/30$359
This Hawaiian Airlines deal was found by Cheapflights users on 4/30. 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 10/213:25 pmGEG - LIH
1 stop8h 50mHawaiian Airlines
Wed 10/291:10 pmLIH - GEG
1 stop7h 49mHawaiian Airlines
Deal found 4/30$482
This United Airlines deal was found by Cheapflights users on 4/30. 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 9/202:45 pmBOI - LIH
1 stop9h 13mUnited Airlines
Sat 9/2710:58 pmLIH - BOI
1 stop10h 51mUnited Airlines
Deal found 4/30$492
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 10/211:40 pmGEG - LIH
1 stop10h 35mAlaska Airlines
Wed 10/298:30 amLIH - GEG
2 stops12h 29mAlaska Airlines
Deal found 4/30$492
This Delta deal was found by Cheapflights users on 4/30. 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.
Fri 8/151:00 pmGEG - LIH
1 stop9h 16mDelta
Fri 8/229:45 pmLIH - GEG
1 stop9h 48mDelta
Deal found 4/30$503
This Hawaiian Airlines deal was found by Cheapflights users on 5/1. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/293:10 pmBOI - LIH
1 stop10h 44mHawaiian Airlines
Sun 8/310:54 pmLIH - BOI
1 stop8h 53mHawaiian Airlines
Deal found 5/1$561
This Southwest deal was found by Cheapflights users on 4/30. 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.
Fri 5/2311:40 amBOI - LIH
2 stops10h 30mSouthwest
Sat 5/2410:00 amLIH - BOI
1 stop7h 40mSouthwest
Deal found 4/30$632
This Delta deal was found by Cheapflights users on 4/30. 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 12/296:55 pmIDA - LIH
2 stops26h 26mDelta
Wed 1/710:26 pmLIH - IDA
2 stops13h 05mDelta
Deal found 4/30$695
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 5/156:00 amIDA - LIH
2 stops33h 55mAlaska Airlines
Tue 5/201:00 pmLIH - IDA
2 stops29h 34mAlaska Airlines
Deal found 4/30$707
This Southwest deal was found by Cheapflights users on 4/30. 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.
Mon 6/911:50 amGEG - LIH
2 stops12h 40mSouthwest
Mon 6/236:15 amLIH - GEG
2 stops11h 10mSouthwest
Deal found 4/30$715
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 12/175:33 amIDA - LIH
1 stop12h 41mAmerican Airlines
Wed 12/243:59 pmLIH - IDA
2 stops27h 07mAmerican Airlines
Deal found 4/30$850

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 May 1, 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

Wed 10/15

2:00 pm-7:22 pm

1 stop9h 22m

Lihue

Thu 10/23

9:45 pm-10:01 am

1 stop8h 16m

$341

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Wed 8/27

6:35 am-3:52 pm

2 stops13h 17m

Lihue

Fri 9/5

10:50 am-11:41 am

1 stop20h 51m

$359

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Tue 10/21

3:25 pm-9:15 pm

1 stop8h 50m

Lihue

Wed 10/29

1:10 pm-11:59 pm

1 stop7h 49m

$482

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Sat 9/20

2:45 pm-7:58 pm

1 stop9h 13m

Lihue

Sat 9/27

10:58 pm-1:49 pm

1 stop10h 51m

$492

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Tue 10/21

1:40 pm-9:15 pm

1 stop10h 35m

Lihue

Wed 10/29

8:30 am-11:59 pm

2 stops12h 29m

$492

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Fri 8/15

1:00 pm-7:16 pm

1 stop9h 16m

Lihue

Fri 8/22

9:45 pm-10:33 am

1 stop9h 48m

$503

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Tue 7/29

3:10 pm-9:54 pm

1 stop10h 44m

Lihue

Sun 8/3

10:54 pm-11:47 am

1 stop8h 53m

$561

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Fri 5/23

11:40 am-6:10 pm

2 stops10h 30m

Lihue

Sat 5/24

10:00 am-9:40 pm

1 stop7h 40m

$632

Idaho FallsLihue

IDA - LIH

IDALIH

Idaho Falls Fanning Field

Thu 5/15

6:00 am-11:55 am

2 stops33h 55m

Lihue

Tue 5/20

1:00 pm-10:34 pm

2 stops29h 34m

$707

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Mon 6/9

11:50 am-9:30 pm

2 stops12h 40m

Lihue

Mon 6/23

6:15 am-8:25 pm

2 stops11h 10m

$715

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 21 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 $678). 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 May 1, 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 May 1, 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
9,972 reviews

Boarding

8.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

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
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

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
4,293 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

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
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

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
2,409 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Food

7.1

Overall

8.0

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 Delta ($212), Alaska Airlines ($296), and Southwest ($462).

  • 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 $678). 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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Alternative routes for Idaho to Kaua'i

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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$322Average$903FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$381Average$626FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$450Average$636FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$475Average$869FlexibilityNo cancel feeOn-time69%

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