$167+ Cheap flights from Idaho to Kaua'i
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIH
Oct 21 — Oct 281
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to Kaua'i with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Idaho to Kaua'iExplore 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 September 21, 2026.
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 September 21, 2026.
This Delta deal was found by Cheapflights users on 9/16. 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 11/212:08 pm -
1 stop11h 06m
Tue 11/109:45 pm -
1 stop10h 48m
Deal found 9/16![Delta logo]()
$334
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 12/75:00 am -
1 stop8h 30m
Mon 12/1412:16 pm -
1 stop8h 23m
Deal found 9/16![Multiple Airlines logo]()
$334
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 11/168:20 am -
1 stop10h 31m
Tue 11/178:45 pm -
2 stops9h 48m
Deal found 9/15![Multiple Airlines logo]()
$340
This Delta deal was found by Cheapflights users on 9/16. 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 12/75:00 am -
2 stops15h 48m
Mon 12/149:45 pm -
1 stop10h 55m
Deal found 9/16![Delta logo]()
$340
This Delta deal was found by Cheapflights users on 9/16. 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.
Wed 10/217:05 am -
2 stops13h 31m
Wed 10/288:48 pm -
2 stops15h 02m
Deal found 9/16![Delta logo]()
$345
This Expedia deal was found by Cheapflights users on 9/17. 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.
Wed 10/146:03 am -
1 stop11h 42m
Wed 10/2110:43 am -
1 stop9h 07m
Deal found 9/17![Alaska Airlines logo]()
$369
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Tue 11/101:08 pm -
1 stop24h 58m
Wed 11/1111:29 pm -
1 stop10h 01m
Deal found 9/16![Alaska Airlines logo]()
$375
This Delta deal was found by Cheapflights users on 9/17. 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 10/145:10 am -
2 stops15h 26m
Wed 10/218:48 pm -
2 stops15h 02m
Deal found 9/17![Delta logo]()
$380
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 11/26:21 pm -
2 stops20h 45m
Tue 11/108:45 pm -
2 stops9h 48m
Deal found 9/16![Multiple Airlines logo]()
$387
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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 12/75:00 am -
1 stop8h 30m
Tue 12/152:16 pm -
2 stops19h 14m
Deal found 9/17![Multiple Airlines logo]()
$387
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/216:30 am -
1 stop11h 21m
Wed 10/289:35 pm -
1 stop12h 54m
Deal found 9/17![American Airlines logo]()
$391
This Delta deal was found by Cheapflights users on 9/16. 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.
Tue 12/15:00 am -
2 stops15h 48m
Wed 12/99:45 pm -
1 stop12h 30m
Deal found 9/16![Delta logo]()
$395
Best flights from Idaho to Kaua'iDiscover carefully curated flight deals from Idaho to Kaua'i that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.
Discover carefully curated flight deals from Idaho to Kaua'i that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/21:53 pm -
1 stop11h 35m
Mon 11/93:04 pm -
1 stop18h 44m
Deal found 9/18![Multiple Airlines logo]()
$334
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 11/101:08 pm -
1 stop24h 58m
Wed 11/1111:29 pm -
1 stop10h 01m
Deal found 9/15![Alaska Airlines logo]()
$375
This Delta deal was found by Cheapflights users on 9/16. 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 2/159:10 am -
1 stop13h 12m
Tue 2/2310:26 pm -
2 stops14h 19m
Deal found 9/16![Delta logo]()
$468
This American Airlines deal was found by Cheapflights users on 9/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/81:35 pm -
2 stops26h 41m
Wed 12/1610:35 pm -
1 stop15h 45m
Deal found 9/18![American Airlines logo]()
$630
This United Airlines deal was found by Cheapflights users on 9/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:00 am -
1 stop12h 55m
Wed 10/287:30 pm -
1 stop10h 23m
Deal found 9/19![United Airlines logo]()
$660
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 11/168:20 am -
1 stop10h 31m
Tue 11/178:45 pm -
2 stops9h 48m
Deal found 9/16![Multiple Airlines logo]()
$340
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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 11/168:20 am -
1 stop10h 31m
Tue 11/1711:29 pm -
1 stop9h 56m
Deal found 9/17![Alaska Airlines logo]()
$427
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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.
Fri 1/226:16 pm -
1 stop19h 36m
Fri 1/299:00 am -
1 stop8h 49m
Deal found 9/17![Multiple Airlines logo]()
$429
This Delta deal was found by Cheapflights users on 9/16. 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.
Fri 1/226:20 am -
2 stops14h 00m
Fri 1/2910:26 pm -
2 stops14h 19m
Deal found 9/16![Delta logo]()
$497
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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 12/71:53 pm -
1 stop24h 16m
Tue 12/154:50 pm -
1 stop21h 48m
Deal found 9/17![Alaska Airlines logo]()
$454
This Delta deal was found by Cheapflights users on 9/19. 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 12/79:33 am -
1 stop12h 45m
Tue 12/159:44 pm -
1 stop10h 56m
Deal found 9/19![Delta logo]()
$500
This Delta deal was found by Cheapflights users on 9/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2111:18 am -
1 stop10h 56m
Wed 10/289:53 pm -
1 stop7h 47m
Deal found 9/20![Delta logo]()
$500
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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 10/273:57 pm -
2 stops23h 35m
Wed 10/283:45 pm -
2 stops17h 36m
Deal found 9/17![Alaska Airlines logo]()
$510
This Alaska Airlines deal was found by Cheapflights users on 9/19. 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.
Thu 11/51:53 pm -
2 stops11h 04m
Wed 11/113:04 pm -
1 stop18h 44m
Deal found 9/19![Multiple Airlines logo]()
$511
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:17 pm -
1 stop10h 53m
Sun 10/119:53 pm -
1 stop8h 01m
Deal found 9/15![Delta logo]()
$506
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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 11/311:33 am -
2 stops25h 57m
Wed 11/411:29 pm -
1 stop8h 22m
Deal found 9/17![Multiple Airlines logo]()
$549
This Delta deal was found by Cheapflights users on 9/19. 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.
Thu 2/251:00 pm -
1 stop9h 22m
Mon 3/810:45 pm -
1 stop12h 17m
Deal found 9/19![Delta logo]()
$510
This Expedia deal was found by Cheapflights users on 9/17. 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 10/173:57 pm -
2 stops21h 46m
Sat 10/243:45 pm -
2 stops19h 35m
Deal found 9/17![Alaska Airlines logo]()
$610
This Alaska Airlines deal was found by Cheapflights users on 9/19. 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.
Tue 10/271:58 pm -
1 stop11h 29m
Wed 10/288:03 pm -
2 stops15h 17m
Deal found 9/19![Multiple Airlines logo]()
$594
This Alaska Airlines deal was found by Cheapflights users on 9/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/311:33 am -
1 stop13h 55m
Wed 11/411:29 pm -
1 stop8h 22m
Deal found 9/20![Alaska Airlines logo]()
$630
This Delta deal was found by Cheapflights users on 9/17. 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 10/29:16 am -
1 stop12h 54m
Tue 10/68:48 pm -
2 stops11h 51m
Deal found 9/17![Delta logo]()
$1,029
Last-minute flights from Idaho to Kaua'iDiscover last-minute flight deals from Idaho to Kaua'i. Data last updated September 21, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Kaua'i. Data last updated September 21, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:05 am -
1 stop10h 57m
Mon 10/59:35 pm -
1 stop11h 47m
Deal found 9/16![American Airlines logo]()
$496
This Expedia deal was found by Cheapflights users on 9/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:16 pm -
1 stop9h 58m
Mon 10/55:07 pm -
2 stops15h 28m
Deal found 9/16![Multiple Airlines logo]()
$502
This Delta deal was found by Cheapflights users on 9/17. 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 10/512:17 pm -
1 stop10h 53m
Sun 10/119:53 pm -
1 stop8h 01m
Deal found 9/17![Delta logo]()
$404
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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 10/55:59 am -
1 stop9h 09m
Sun 10/117:21 pm -
2 stops13h 14m
Deal found 9/17![Multiple Airlines logo]()
$500
This Expedia deal was found by Cheapflights users on 9/17. 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.
Wed 10/146:03 am -
1 stop11h 42m
Wed 10/2110:43 am -
1 stop9h 07m
Deal found 9/17![Alaska Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 9/17. 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 10/145:10 am -
2 stops15h 26m
Wed 10/219:53 pm -
1 stop9h 45m
Deal found 9/17![Delta logo]()
$375
This Delta deal was found by Cheapflights users on 9/17. 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 10/1710:34 am -
1 stop12h 40m
Sat 10/249:53 pm -
1 stop9h 34m
Deal found 9/17![Delta logo]()
$432
This Expedia deal was found by Cheapflights users on 9/17. 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 10/1712:58 pm -
1 stop12h 29m
Sat 10/243:45 pm -
2 stops16h 50m
Deal found 9/17![Alaska Airlines logo]()
$442
This Expedia deal was found by Cheapflights users on 9/17. 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 10/171:32 pm -
2 stops12h 25m
Sat 10/243:45 pm -
2 stops16h 50m
Deal found 9/17![Multiple Airlines logo]()
$448
This Delta deal was found by Cheapflights users on 9/16. 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.
Wed 10/211:00 pm -
1 stop9h 14m
Wed 10/289:53 pm -
1 stop7h 47m
Deal found 9/16![Delta logo]()
$334
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/216:30 am -
1 stop11h 21m
Wed 10/289:35 pm -
1 stop12h 54m
Deal found 9/17![American Airlines logo]()
$391
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 10/211:57 pm -
1 stop22h 46m
Wed 10/2812:23 pm -
1 stop7h 30m
Deal found 9/16![Multiple Airlines logo]()
$401
One-way flights from Idaho to Kaua'iSearch for one-way flight options from Idaho to Kaua'i. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.
Search for one-way flight options from Idaho to Kaua'i. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.
This Delta deal was found by Cheapflights users on 9/17. 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 1/182:35 pm -
1 stop8h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Delta logo]()
$167
This Delta deal was found by Cheapflights users on 9/17. 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 1/251:00 pm -
1 stop9h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Delta logo]()
$167
This Priceline deal was found by Cheapflights users on 9/17. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/257:38 am -
2 stops13h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$173
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Thu 1/216:10 am -
1 stop9h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![United Airlines logo]()
$198
This Expedia deal was found by Cheapflights users on 9/17. 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 1/168:24 pm -
1 stop19h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$200
This Southwest deal was found by Cheapflights users on 9/17. 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 1/176:00 am -
2 stops11h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Southwest logo]()
$207
This American Airlines deal was found by Cheapflights users on 9/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:15 am -
1 stop11h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![American Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 9/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/49:30 am -
1 stop12h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Delta logo]()
$250
This Southwest deal was found by Cheapflights users on 9/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/25:00 am -
2 stops11h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Southwest logo]()
$256
This Southwest deal was found by Cheapflights users on 9/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1010:55 am -
2 stops12h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Southwest logo]()
$288
This American Airlines deal was found by Cheapflights users on 9/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/103:16 pm -
1 stop26h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![American Airlines logo]()
$322
This Trip.com deal was found by Cheapflights users on 9/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/44:39 pm -
3 stops17h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$353
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 September 21, 2026.
Round-trip from | $329 (Alaska Airlines) |
|---|---|
One-way from | $167 (Delta) |
Popular in | December |
Cheapest in | January |
Average price | $582 |
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 7,457,451 searches. Data last updated September 21, 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
Cheapest round-trip
BoiseLihue
BOI Boise Air Term. Gowen Fld - LIH Lihue
BOILIH
Boise Air Term. Gowen Fld
Wed 11/4
10:34 am-8:14 pm
1 stop12h 40m
Lihue
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$167
Quickest round-trip
BoiseLihue
BOI Boise Air Term. Gowen Fld - LIH Lihue
BOILIH
Boise Air Term. Gowen Fld
Mon 1/18
2:35 pm-8:22 pm
1 stop8h 47m
Lihue
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$167
SpokaneLihue
GEG Spokane - LIH Lihue
GEGLIH
Spokane
Mon 1/25
1:00 pm-8:22 pm
1 stop9h 22m
Lihue
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$167
BoiseLihue
BOI Boise Air Term. Gowen Fld - LIH Lihue
BOILIH
Boise Air Term. Gowen Fld
Thu 1/21
6:10 am-12:16 pm
1 stop9h 06m
Lihue
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$198
BoiseLihue
BOI Boise Air Term. Gowen Fld - LIH Lihue
BOILIH
Boise Air Term. Gowen Fld
Sun 1/17
6:00 am-2:50 pm
2 stops11h 50m
Lihue
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$207
BoiseLihue
BOI Boise Air Term. Gowen Fld - LIH Lihue
BOILIH
Boise Air Term. Gowen Fld
Wed 11/4
4:24 pm-10:30 am
2 stops21h 06m
Lihue
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$238
SpokaneLihue
GEG Spokane - LIH Lihue
GEGLIH
Spokane
Mon 11/2
6:15 am-4:10 pm
1 stop11h 55m
Lihue
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$249
SpokaneLihue
GEG Spokane - LIH Lihue
GEGLIH
Spokane
Mon 2/8
5:03 am-12:44 pm
1 stop9h 41m
Lihue
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$249
SpokaneLihue
GEG Spokane - LIH Lihue
GEGLIH
Spokane
Wed 11/4
12:41 pm-9:57 pm
2 stops11h 16m
Lihue
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$249
SpokaneLihue
GEG Spokane - LIH Lihue
GEGLIH
Spokane
Wed 11/4
9:30 am-8:14 pm
1 stop12h 44m
Lihue
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$250
Showing 1-10 of 45 resultsSorted by cheapest first
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.
BOI-LIH
GEG-LIH
IDA-LIH
SUN-LIH
LWS-LIH
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
USID-zzFUS
BOI-LIH
GEG-LIH
IDA-LIH
SUN-LIH
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 $388). Flying from Idaho to Kaua'i in December is currently the most expensive (average of $914). 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.
How far ahead should I book a flight from Idaho to Kaua'i?
The best time to book flights from Idaho to Kaua'i is 20 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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.
Browse thousands of different options on Cheapflights for your next trip
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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.
Complete your trip
Complete your trip to Kaua'i by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Idaho to Kaua'i by cabin class
Find flights from Idaho to Kaua'i, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Idaho and Kaua'i flights
Browse other Idaho and Kaua'i flight options. Last updated on September 21, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Kaua'i
Find the right flight back to Idaho after your stay in Kaua'i
Idaho to Kaua'i flights
Consider these flights traveling from Idaho to Kaua'i.
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 7,457,451 searches. Data last updated September 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$239 | Average$498 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$348 | Average$633 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$410 | Average$601 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$452 | Average$712 | FlexibilityNo cancel fee | On-time69% |