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Kaua'i

$167+ 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIH
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
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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 November 20, 2025.

This Delta deal was found by Cheapflights users on 11/18. 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 12/111:54 pmBOI - LIH
1 stop9h 16mDelta
Mon 12/159:50 pmLIH - BOI
1 stop12h 24mDelta
Deal found 11/18$282
This Delta deal was found by Cheapflights users on 11/18. 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 12/101:54 pmBOI - LIH
1 stop9h 16mDelta
Mon 12/159:50 pmLIH - BOI
1 stop12h 24mDelta
Deal found 11/18$286
This Delta deal was found by Cheapflights users on 11/18. 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 12/109:00 amBOI - LIH
1 stop14h 10mDelta
Sun 12/1410:55 pmLIH - BOI
2 stops16h 56mDelta
Deal found 11/18$291
This Alaska Airlines deal was found by Cheapflights users on 11/19. 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 12/103:39 pmBOI - LIH
1 stop9h 46mAlaska Airlines
Mon 12/1511:25 pmLIH - BOI
1 stop13h 51mAlaska Airlines
Deal found 11/19$302
This Delta deal was found by Cheapflights users on 11/18. 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 12/125:20 amBOI - LIH
2 stops16h 13mDelta
Tue 12/169:50 pmLIH - BOI
1 stop10h 14mDelta
Deal found 11/18$399
This Delta deal was found by Cheapflights users on 11/18. 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 12/127:45 amBOI - LIH
1 stop13h 48mDelta
Mon 12/159:50 pmLIH - BOI
1 stop10h 14mDelta
Deal found 11/18$422
This Delta deal was found by Cheapflights users on 11/18. 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.
Sat 12/65:05 amGEG - LIH
2 stops15h 28mDelta
Sun 12/149:50 pmLIH - GEG
1 stop8h 43mDelta
Deal found 11/18$490
This Delta deal was found by Cheapflights users on 11/19. 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.
Sun 12/711:19 amGEG - LIH
1 stop10h 51mDelta
Sun 12/1410:55 pmLIH - GEG
1 stop13h 11mDelta
Deal found 11/19$502
This Delta deal was found by Cheapflights users on 11/19. 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 12/11:10 pmGEG - LIH
1 stop8h 54mDelta
Thu 12/119:50 pmLIH - GEG
1 stop8h 43mDelta
Deal found 11/19$509
This Alaska Airlines deal was found by Cheapflights users on 11/19. 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 12/155:51 amGEG - LIH
2 stops12h 40mAlaska Airlines
Wed 12/2411:23 pmLIH - GEG
1 stop8h 00mAlaska Airlines
Deal found 11/19$516
This Expedia deal was found by Cheapflights users on 11/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/69:00 amGEG - LIH
1 stop8h 51mAlaska Airlines
Sun 12/1411:25 pmLIH - GEG
1 stop21h 49mAlaska Airlines
Deal found 11/20$544
This Alaska Airlines deal was found by Cheapflights users on 11/19. 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 12/155:51 amGEG - LIH
2 stops12h 40mAlaska Airlines
Tue 12/2311:59 amLIH - GEG
1 stop9h 01mAlaska Airlines
Deal found 11/19$548

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 November 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$282
(Delta)

One-way from

$167
(Delta)

Popular in

March

Cheapest in

August

Average price

$586
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. 3% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 20, 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 12/10

1:54 pm-8:10 pm

1 stop9h 16m

Lihue

Tue 12/16

9:50 pm-11:04 am

1 stop10h 14m

$282

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Thu 2/19

1:46 pm-7:55 pm

1 stop9h 09m

Lihue

Thu 2/26

10:45 pm-1:06 pm

1 stop11h 21m

$286

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Thu 12/11

5:20 am-6:33 pm

2 stops16h 13m

Lihue

Mon 12/15

9:50 pm-11:04 am

1 stop10h 14m

$288

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Thu 1/29

10:39 am-7:55 pm

1 stop12h 16m

Lihue

Wed 2/4

9:31 pm-4:17 pm

2 stops15h 46m

$291

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Wed 1/21

7:25 am-6:31 pm

2 stops14h 06m

Lihue

Mon 1/26

10:45 pm-9:57 am

1 stop8h 12m

$291

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Wed 2/4

5:40 am-6:31 pm

2 stops15h 51m

Lihue

Wed 2/11

9:31 pm-4:05 pm

2 stops15h 34m

$296

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Tue 2/24

5:40 am-6:31 pm

2 stops15h 51m

Lihue

Tue 3/3

9:31 pm-4:05 pm

2 stops15h 34m

$296

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Tue 2/17

5:40 am-6:31 pm

2 stops15h 51m

Lihue

Tue 2/24

9:31 pm-4:05 pm

2 stops15h 34m

$296

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Tue 1/20

5:05 am-6:31 pm

2 stops15h 26m

Lihue

Tue 1/27

10:45 pm-12:37 pm

1 stop11h 52m

$311

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Mon 1/12

6:05 am-6:21 pm

2 stops14h 16m

Lihue

Tue 1/20

10:45 pm-8:40 am

1 stop7h 55m

$311

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 39 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, July is the cheapest month in which you can book a flight from Idaho to Kaua'i (average of $266). Flying from Idaho to Kaua'i in October is currently the most expensive (average of $459). 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 November 20, 2025.

It’s optimal to fly from Idaho to Kaua'i in the evening. By choosing this option you can save up to 77% on the cost of your flight, compared to a flight in the afternoon.

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.

  • How long is the flight from Idaho to Kaua'i?

    Airlines like Delta and Alaska Airlines fly from Idaho to Kaua'i in about 9h 16m. The time it takes to get you to your destination can typically vary by up to 21h 27m. Airlines will cover a distance of 2869 mi. This flight may include one or multiple stops.

  • 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, July is the cheapest month in which you can book a flight from Idaho to Kaua'i (average of $266). Flying from Idaho to Kaua'i in October is currently the most expensive (average of $459). 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$280Average$668FlexibilityNo cancel feeOn-time85%
DeltaCheapest$327Average$455FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$345Average$831FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$381Average$654FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$450Average$623FlexibilityNo cancel feeOn-time63%

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