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Kaua'i

$164+ 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIH
Feb 11 — Feb 181
Wed 2/11
Wed 2/18
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 January 12, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$334
(Southwest)

One-way from

$164
(Southwest)

Popular in

December

Cheapest in

August

Average price

$422
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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Highest demand for flights based on searches. 5% potential increase in price ($34 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 12, 2026.

This Southwest deal was found by Cheapflights users on 1/11. 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 2/1810:45 am
BOI
-
LIH
1 stop8h 40m
Southwest
Wed 2/257:05 pm
LIH
-
BOI
2 stops13h 25m
Southwest
Deal found 1/11$334
This Southwest deal was found by Cheapflights users on 1/11. 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 2/47:05 am
BOI
-
LIH
2 stops14h 10m
Southwest
Mon 2/97:05 pm
LIH
-
BOI
2 stops13h 05m
Southwest
Deal found 1/11$339
This Delta deal was found by Cheapflights users on 1/11. 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 2/245:00 am
GEG
-
LIH
1 stop15h 46m
Delta
Tue 3/39:20 pm
LIH
-
GEG
1 stop9h 20m
Delta
Deal found 1/11$352
This Delta deal was found by Cheapflights users on 1/10. 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 3/17:30 pm
GEG
-
LIH
1 stop25h 16m
Delta
Wed 3/188:19 pm
LIH
-
GEG
1 stop9h 31m
Delta
Deal found 1/10$354
This Delta deal was found by Cheapflights users on 1/11. 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 2/237:30 pm
GEG
-
LIH
1 stop25h 16m
Delta
Tue 3/39:20 pm
LIH
-
GEG
1 stop9h 20m
Delta
Deal found 1/11$355
This Delta deal was found by Cheapflights users on 1/10. 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 2/249:25 am
GEG
-
LIH
1 stop11h 21m
Delta
Thu 3/59:20 pm
LIH
-
GEG
1 stop9h 20m
Delta
Deal found 1/10$360
This Delta deal was found by Cheapflights users on 1/10. 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 2/265:00 am
GEG
-
LIH
2 stops16h 49m
Delta
Tue 3/108:19 pm
LIH
-
GEG
1 stop9h 30m
Delta
Deal found 1/10$366
This Southwest deal was found by Cheapflights users on 1/10. 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 1/3110:35 am
BOI
-
LIH
2 stops10h 40m
Southwest
Sun 2/110:00 am
LIH
-
BOI
1 stop8h 15m
Southwest
Deal found 1/10$367
This Delta deal was found by Cheapflights users on 1/10. 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 3/36:25 am
GEG
-
LIH
1 stop15h 24m
Delta
Wed 3/188:19 pm
LIH
-
GEG
1 stop9h 31m
Delta
Deal found 1/10$372
This Alaska Airlines deal was found by Cheapflights users on 1/12. 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 3/97:06 pm
GEG
-
LIH
2 stops17h 41m
Multiple Airlines
Mon 3/163:50 pm
LIH
-
GEG
1 stop18h 12m
Multiple Airlines
Deal found 1/12$375
This Delta deal was found by Cheapflights users on 1/11. 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 2/2411:22 am
GEG
-
LIH
1 stop9h 24m
Delta
Wed 3/410:40 pm
LIH
-
GEG
2 stops14h 18m
Delta
Deal found 1/11$376
This Delta deal was found by Cheapflights users on 1/11. 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 2/237:30 pm
GEG
-
LIH
1 stop25h 16m
Delta
Thu 3/59:20 pm
LIH
-
GEG
1 stop9h 20m
Delta
Deal found 1/11$379

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 January 12, 2026.
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 2/4

6:05 am-1:15 pm

1 stop10h 10m

Lihue

Mon 2/9

7:05 pm-11:10 am

2 stops13h 05m

$334

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Wed 2/18

10:45 am-4:25 pm

1 stop8h 40m

Lihue

Wed 2/25

7:05 pm-11:30 am

2 stops13h 25m

$334

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Tue 2/17

6:30 am-6:15 pm

2 stops14h 45m

Lihue

Thu 2/26

10:00 am-10:15 pm

1 stop9h 15m

$334

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Mon 2/23

7:30 pm-6:46 pm

1 stop25h 16m

Lihue

Tue 3/3

9:20 pm-8:40 am

1 stop9h 20m

$355

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Tue 2/24

9:25 am-6:46 pm

1 stop11h 21m

Lihue

Thu 3/5

9:20 pm-8:40 am

1 stop9h 20m

$360

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Sat 1/31

10:35 am-6:15 pm

2 stops10h 40m

Lihue

Sun 2/1

10:00 am-9:15 pm

1 stop8h 15m

$367

BoiseLihue

BOI - LIH

BOILIH

Boise Air Term. Gowen Fld

Wed 3/4

6:05 am-1:15 pm

1 stop10h 10m

Lihue

Sun 3/8

8:20 am-1:25 am

2 stops13h 05m

$367

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Mon 3/9

7:06 pm-9:47 am

2 stops17h 41m

Lihue

Mon 3/16

3:50 pm-1:02 pm

1 stop18h 12m

$375

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Tue 2/24

11:22 am-6:46 pm

1 stop9h 24m

Lihue

Wed 3/4

10:40 pm-2:58 pm

2 stops14h 18m

$376

SpokaneLihue

GEG - LIH

GEGLIH

Spokane

Tue 2/24

11:22 am-6:46 pm

1 stop9h 24m

Lihue

Tue 3/10

8:19 pm-8:49 am

1 stop9h 30m

$380

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/11

Showing 1-10 of 48 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, December is the cheapest month in which you can book a flight from Idaho to Kaua'i (average of $247). 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 Southwest, Delta, and Alaska Airlines fly from Idaho to Kaua'i in about 10h 10m. The time it takes to get you to your destination can typically vary by up to 15h 06m. Airlines will cover a distance of 2869 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 ($166), Alaska Airlines ($191), and United Airlines ($213).

  • 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 $247). 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 January 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$280Average$668FlexibilityNo cancel feeOn-time85%
DeltaCheapest$323Average$435FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$345Average$951FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$379Average$672FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$410Average$619FlexibilityNo cancel feeOn-time63%

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