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Kaua'i

$148+ 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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIH
Mar 31 — Apr 71
Tue 3/31
Tue 4/7
1 adult, Economy
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Cheap 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 March 1, 2026.

This Alaska Airlines deal was found by Cheapflights users on 2/26. 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 4/281:20 pm
GEG
-
LIH
1 stop23h 24m
Alaska Airlines
Tue 5/53:04 pm
LIH
-
GEG
1 stop28h 16m
Alaska Airlines
Deal found 2/26$339
This Alaska Airlines deal was found by Cheapflights users on 2/25. 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 4/296:08 pm
BOI
-
LIH
2 stops21h 30m
Multiple Airlines
Tue 5/512:53 pm
LIH
-
BOI
1 stop23h 22m
Multiple Airlines
Deal found 2/25$355
This Alaska Airlines deal was found by Cheapflights users on 2/26. 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 4/139:02 am
BOI
-
LIH
1 stop28h 50m
Multiple Airlines
Mon 4/209:00 pm
LIH
-
BOI
2 stops11h 25m
Multiple Airlines
Deal found 2/26$358
This Expedia deal was found by Cheapflights users on 2/26. 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.
Thu 5/73:12 pm
GEG
-
LIH
1 stop9h 14m
Alaska Airlines
Wed 5/133:45 pm
LIH
-
GEG
1 stop19h 55m
Alaska Airlines
Deal found 2/26$365
This Delta deal was found by Cheapflights users on 2/26. 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 4/147:15 am
GEG
-
LIH
1 stop13h 25m
Delta
Tue 4/219:25 pm
LIH
-
GEG
2 stops12h 02m
Delta
Deal found 2/26$368
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/137:00 am
BOI
-
LIH
1 stop30h 50m
Multiple Airlines
Fri 4/1711:05 am
LIH
-
BOI
1 stop24h 26m
Multiple Airlines
Deal found 2/27$370
This Alaska Airlines deal was found by Cheapflights users on 2/26. 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 4/281:20 pm
GEG
-
LIH
1 stop23h 24m
Multiple Airlines
Wed 5/65:10 pm
LIH
-
GEG
2 stops12h 51m
Multiple Airlines
Deal found 2/26$371
This Alaska Airlines deal was found by Cheapflights users on 2/26. 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 4/271:34 pm
GEG
-
LIH
1 stop10h 52m
Alaska Airlines
Tue 5/53:04 pm
LIH
-
GEG
1 stop28h 16m
Alaska Airlines
Deal found 2/26$374
This Alaska Airlines deal was found by Cheapflights users on 2/28. 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 4/1412:17 pm
GEG
-
LIH
1 stop24h 28m
Multiple Airlines
Tue 4/216:00 am
LIH
-
GEG
2 stops13h 52m
Multiple Airlines
Deal found 2/28$378
This Alaska Airlines deal was found by Cheapflights users on 2/26. 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 4/271:34 pm
GEG
-
LIH
2 stops11h 47m
Multiple Airlines
Tue 5/53:04 pm
LIH
-
GEG
1 stop28h 16m
Multiple Airlines
Deal found 2/26$380
This Alaska Airlines deal was found by Cheapflights users on 2/27. 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.
Sat 4/187:15 am
GEG
-
LIH
1 stop16h 51m
Alaska Airlines
Mon 4/273:24 pm
LIH
-
GEG
1 stop18h 16m
Alaska Airlines
Deal found 2/27$381
This Alaska Airlines deal was found by Cheapflights users on 2/25. 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 5/127:00 am
BOI
-
LIH
1 stop8h 38m
Multiple Airlines
Fri 5/153:45 pm
LIH
-
BOI
1 stop21h 58m
Multiple Airlines
Deal found 2/25$397

Find 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 March 1, 2026.

Round-trip from

$339
(Alaska Airlines)

One-way from

$148
(Alaska Airlines)

Popular in

December

Cheapest in

January

Average price

$675
From Idaho to Kaua'i
Search Deals
One-way flight from Idaho to Kaua'i
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 March 1, 2026.
Use the filters below to find and compare flights from Idaho to Kaua'i that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Tue 4/28

1:20 pm-9:44 am

1 stop23h 24m

Lihue

Wed 5/6

5:10 pm-9:01 am

2 stops12h 51m

$371

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Tue 4/14

12:17 pm-9:45 am

1 stop24h 28m

Lihue

Tue 4/21

6:00 am-10:52 pm

2 stops13h 52m

$371

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Mon 4/27

1:34 pm-9:26 pm

1 stop10h 52m

Lihue

Tue 5/5

3:04 pm-10:20 pm

1 stop28h 16m

$374

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Mon 4/27

1:34 pm-10:21 pm

2 stops11h 47m

Lihue

Tue 5/5

3:04 pm-10:20 pm

1 stop28h 16m

$380

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Mon 4/13

8:28 pm-9:50 am

2 stops17h 22m

Lihue

Mon 4/20

7:55 pm-12:25 pm

2 stops12h 30m

$407

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Wed 4/29

2:57 pm-9:26 pm

1 stop10h 29m

Lihue

Sun 5/3

10:26 pm-6:34 pm

1 stop16h 08m

$413

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Wed 4/29

6:08 pm-11:38 am

2 stops21h 30m

Lihue

Sun 5/3

3:04 pm-11:02 pm

1 stop27h 58m

$419

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Tue 4/14

7:15 am-5:40 pm

1 stop13h 25m

Lihue

Mon 4/20

9:25 pm-2:49 pm

2 stops14h 24m

$425

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Mon 4/13

9:02 am-9:52 am

1 stop28h 50m

Lihue

Mon 4/20

3:02 pm-9:40 pm

1 stop26h 38m

$442

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Mon 5/11

5:45 am-5:40 pm

2 stops15h 55m

Lihue

Fri 5/15

9:40 pm-2:43 pm

1 stop13h 03m

$451

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/26

Showing 1-10 of 60 resultsSorted by cheapest first
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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, December is the cheapest month in which you can book a flight from Idaho to Kaua'i (average of $251). 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.

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 Alaska Airlines and Delta fly from Idaho to Kaua'i in about 10h 52m. The time it takes to get you to your destination can typically vary by up to 4h 44m. Airlines will cover a distance of 2905 mi. This flight may include one or multiple stops.

  • 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 ($176), United Airlines ($213), and Alaska Airlines ($233).

  • 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, December is the cheapest month in which you can book a flight from Idaho to Kaua'i (average of $251). 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 March 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$227Average$676FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$240Average$668FlexibilityNo cancel feeOn-time85%
DeltaCheapest$305Average$455FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$379Average$665FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$449Average$582FlexibilityNo cancel feeOn-time63%

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