$131+ Cheap flights from Kentucky to Idaho
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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — BOI
Jul 18 — Jul 251
Round-trip
1 adult, Economy
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Cheapest flights from Kentucky to IdahoExplore the most affordable flight options available from Kentucky to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.
Explore the most affordable flight options available from Kentucky to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.
This Delta deal was found by Cheapflights users on 6/16. 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 8/47:30 am
BNA
- GEG
1 stop6h 52m
Delta
Tue 8/111:00 pm
GEG
- BNA
1 stop8h 55m
Delta
Deal found 6/16![Delta logo]()
$283
This CheapOair deal was found by Cheapflights users on 6/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/812:17 pm
BNA
- BOI
1 stop25h 12m
Frontier
Tue 7/141:24 pm
BOI
- BNA
1 stop21h 08m
Frontier
Deal found 6/17![Frontier logo]()
$285
This American Airlines deal was found by Cheapflights users on 6/16. 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.
Tue 8/45:01 am
BNA
- GEG
2 stops10h 58m
American Airlines
Tue 8/115:20 am
GEG
- BNA
1 stop7h 10m
American Airlines
Deal found 6/16![American Airlines logo]()
$288
This Delta deal was found by Cheapflights users on 6/16. 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 6/265:20 pm
BNA
- GEG
1 stop8h 35m
Delta
Tue 6/305:20 am
GEG
- BNA
1 stop6h 24m
Delta
Deal found 6/16![Delta logo]()
$293
This United Airlines deal was found by Cheapflights users on 6/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/142:54 pm
BNA
- GEG
1 stop9h 42m
United Airlines
Fri 8/215:00 am
GEG
- BNA
1 stop6h 37m
United Airlines
Deal found 6/15![United Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 6/16. 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 6/246:44 pm
BNA
- GEG
1 stop6h 23m
Delta
Fri 6/2610:48 pm
GEG
- BNA
1 stop7h 44m
Delta
Deal found 6/16![Delta logo]()
$303
This Delta deal was found by Cheapflights users on 6/16. 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 7/82:59 pm
BNA
- BOI
1 stop8h 59m
Delta
Tue 7/147:00 am
BOI
- BNA
1 stop10h 24m
Delta
Deal found 6/16![Delta logo]()
$303
This United Airlines deal was found by Cheapflights users on 6/16. 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.
Sat 7/410:00 am
BNA
- GEG
2 stops12h 30m
United Airlines
Fri 7/107:07 pm
GEG
- BNA
1 stop9h 30m
United Airlines
Deal found 6/16![United Airlines logo]()
$304
This American Airlines deal was found by Cheapflights users on 6/16. 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.
Tue 7/144:36 pm
BNA
- BOI
1 stop7h 45m
American Airlines
Tue 7/213:54 pm
BOI
- BNA
1 stop6h 34m
American Airlines
Deal found 6/16![American Airlines logo]()
$306
This American Airlines deal was found by Cheapflights users on 6/16. 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 8/126:00 am
BNA
- BOI
1 stop6h 16m
American Airlines
Wed 8/198:01 am
BOI
- BNA
2 stops10h 13m
American Airlines
Deal found 6/16![American Airlines logo]()
$308
This Delta deal was found by Cheapflights users on 6/17. 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.
Thu 9/107:00 am
BNA
- BOI
1 stop9h 20m
Delta
Wed 9/237:00 am
BOI
- BNA
1 stop7h 31m
Delta
Deal found 6/17![Delta logo]()
$311
This American Airlines deal was found by Cheapflights users on 6/17. 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.
Sat 7/113:32 pm
BNA
- BOI
1 stop8h 49m
American Airlines
Sat 7/183:54 pm
BOI
- BNA
1 stop6h 34m
American Airlines
Deal found 6/17![American Airlines logo]()
$312
Best flights from Kentucky to IdahoDiscover carefully curated flight deals from Kentucky to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2026.
Discover carefully curated flight deals from Kentucky to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2026.
This Delta deal was found by Cheapflights users on 6/17. 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.
Thu 8/136:43 pm
BNA
- GEG
1 stop6h 26m
Delta
Sun 8/166:45 am
GEG
- BNA
1 stop8h 49m
Delta
Deal found 6/17![Delta logo]()
$283
This Southwest deal was found by Cheapflights users on 6/13. 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 9/197:35 am
BNA
- GEG
2 stops9h 00m
Southwest
Tue 9/2212:35 pm
GEG
- BNA
1 stop7h 25m
Southwest
Deal found 6/13![Southwest logo]()
$288
This Alaska Airlines deal was found by Cheapflights users on 6/18. 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.
Tue 8/46:03 pm
BNA
- GEG
1 stop7h 56m
Alaska Airlines
Tue 8/115:00 am
GEG
- BNA
1 stop10h 00m
Alaska Airlines
Deal found 6/18![Alaska Airlines logo]()
$303
This United Airlines deal was found by Cheapflights users on 6/13. 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 8/116:00 am
BNA
- JAC
1 stop6h 13m
United Airlines
Tue 8/188:05 am
JAC
- BNA
2 stops9h 40m
United Airlines
Deal found 6/13![United Airlines logo]()
$336
This American Airlines deal was found by Cheapflights users on 6/13. 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 7/85:01 am
BNA
- BOI
1 stop7h 18m
American Airlines
Sat 7/183:54 pm
BOI
- BNA
1 stop6h 34m
American Airlines
Deal found 6/13![American Airlines logo]()
$337
This Delta deal was found by Cheapflights users on 6/15. 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 7/276:45 pm
BNA
- GEG
1 stop6h 21m
Delta
Mon 8/31:00 pm
GEG
- BNA
1 stop8h 55m
Delta
Deal found 6/15![Delta logo]()
$283
This Delta deal was found by Cheapflights users on 6/16. 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 8/47:30 am
BNA
- GEG
1 stop6h 52m
Delta
Tue 8/111:00 pm
GEG
- BNA
1 stop8h 55m
Delta
Deal found 6/16![Delta logo]()
$283
This American Airlines deal was found by Cheapflights users on 6/13. 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.
Sat 7/119:57 am
BNA
- BOI
2 stops9h 06m
American Airlines
Sat 7/183:54 pm
BOI
- BNA
1 stop6h 34m
American Airlines
Deal found 6/13![American Airlines logo]()
$357
This Southwest deal was found by Cheapflights users on 6/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/233:35 pm
BNA
- BOI
2 stops8h 35m
Southwest
Sat 10/35:35 am
BOI
- BNA
2 stops10h 25m
Southwest
Deal found 6/15![Southwest logo]()
$363
This Delta deal was found by Cheapflights users on 6/17. 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 9/196:00 am
BNA
- GEG
1 stop8h 53m
Delta
Mon 9/211:00 pm
GEG
- BNA
1 stop8h 59m
Delta
Deal found 6/17![Delta logo]()
$303
This Alaska Airlines deal was found by Cheapflights users on 6/16. 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 8/259:03 am
BNA
- BOI
1 stop10h 04m
Alaska Airlines
Wed 8/261:15 pm
BOI
- BNA
1 stop9h 37m
Alaska Airlines
Deal found 6/16![Alaska Airlines logo]()
$391
This United Airlines deal was found by Cheapflights users on 6/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/299:52 am
BNA
- JAC
2 stops8h 57m
United Airlines
Tue 9/11:45 pm
JAC
- BNA
1 stop6h 30m
United Airlines
Deal found 6/15![United Airlines logo]()
$392
This Southwest deal was found by Cheapflights users on 6/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/121:55 pm
TYS
- BOI
2 stops11h 15m
Southwest
Wed 8/197:05 am
BOI
- TYS
2 stops9h 50m
Southwest
Deal found 6/15![Southwest logo]()
$366
This Delta deal was found by Cheapflights users on 6/13. 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 7/87:34 pm
BNA
- BOI
1 stop5h 31m
Delta
Tue 7/144:00 pm
BOI
- BNA
1 stop7h 33m
Delta
Deal found 6/13![Delta logo]()
$303
This United Airlines deal was found by Cheapflights users on 6/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/274:50 pm
TYS
- JAC
1 stop5h 50m
United Airlines
Tue 9/17:00 am
JAC
- TYS
2 stops11h 24m
United Airlines
Deal found 6/18![United Airlines logo]()
$394
This Alaska Airlines deal was found by Cheapflights users on 6/15. 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.
Thu 8/137:20 am
BNA
- GEG
1 stop16h 55m
Alaska Airlines
Sun 8/165:00 am
GEG
- BNA
2 stops9h 59m
Alaska Airlines
Deal found 6/15![Alaska Airlines logo]()
$398
This Southwest deal was found by Cheapflights users on 6/16. 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.
Mon 8/33:25 pm
BNA
- BOI
2 stops8h 35m
Southwest
Tue 8/43:40 pm
BOI
- BNA
1 stop6h 15m
Southwest
Deal found 6/16![Southwest logo]()
$366
This Delta deal was found by Cheapflights users on 6/14. 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 7/145:00 pm
BNA
- BOI
1 stop7h 51m
Delta
Tue 7/2110:29 am
BOI
- BNA
1 stop6h 06m
Delta
Deal found 6/14![Delta logo]()
$303
This United Airlines deal was found by Cheapflights users on 6/16. 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.
Tue 10/137:00 am
SDF
- JAC
1 stop6h 21m
United Airlines
Tue 10/201:40 pm
JAC
- SDF
2 stops8h 19m
United Airlines
Deal found 6/16![United Airlines logo]()
$394
This Delta deal was found by Cheapflights users on 6/17. 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 7/12:50 pm
BNA
- BOI
1 stop9h 14m
Delta
Wed 7/811:10 pm
BOI
- BNA
1 stop7h 28m
Delta
Deal found 6/17![Delta logo]()
$303
This Alaska Airlines deal was found by Cheapflights users on 6/14. 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 10/208:39 am
CVG
- GEG
1 stop7h 28m
Alaska Airlines
Sat 10/2410:27 am
GEG
- CVG
1 stop7h 42m
Alaska Airlines
Deal found 6/14![Alaska Airlines logo]()
$418
This Southwest deal was found by Cheapflights users on 6/16. 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.
Thu 10/81:30 pm
BNA
- GEG
2 stops10h 40m
Southwest
Wed 10/147:45 am
GEG
- BNA
1 stop12h 55m
Southwest
Deal found 6/16![Southwest logo]()
$382
This American Airlines deal was found by Cheapflights users on 6/17. 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.
Sun 9/137:31 am
TRI
- JAC
1 stop6h 36m
American Airlines
Fri 9/183:41 pm
JAC
- TRI
1 stop6h 15m
American Airlines
Deal found 6/17![American Airlines logo]()
$500
This United Airlines deal was found by Cheapflights users on 6/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/289:52 am
BNA
- JAC
2 stops8h 57m
United Airlines
Tue 9/17:15 am
JAC
- BNA
1 stop6h 02m
United Airlines
Deal found 6/15![United Airlines logo]()
$415
This Delta deal was found by Cheapflights users on 6/14. 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 8/133:52 pm
BNA
- BOI
1 stop9h 07m
Delta
Mon 8/172:53 pm
BOI
- BNA
1 stop6h 23m
Delta
Deal found 6/14![Delta logo]()
$319
This Southwest deal was found by Cheapflights users on 6/13. 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 8/105:20 am
BNA
- GEG
2 stops9h 15m
Southwest
Sat 8/1511:20 am
GEG
- BNA
2 stops8h 55m
Southwest
Deal found 6/13![Southwest logo]()
$399
This United Airlines deal was found by Cheapflights users on 6/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:25 pm
SDF
- JAC
1 stop7h 15m
United Airlines
Tue 9/11:45 pm
JAC
- SDF
1 stop6h 46m
United Airlines
Deal found 6/15![United Airlines logo]()
$416
This Delta deal was found by Cheapflights users on 6/15. 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.
Fri 7/35:10 pm
BNA
- BOI
1 stop5h 55m
Delta
Sun 7/1211:10 pm
BOI
- BNA
1 stop7h 28m
Delta
Deal found 6/15![Delta logo]()
$326
This United Airlines deal was found by Cheapflights users on 6/13. 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 9/812:37 pm
BNA
- JAC
1 stop7h 14m
United Airlines
Sat 9/128:05 am
JAC
- BNA
2 stops12h 32m
United Airlines
Deal found 6/13![United Airlines logo]()
$426
This Delta deal was found by Cheapflights users on 6/18. 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 9/36:43 pm
BNA
- GEG
1 stop6h 26m
Delta
Tue 9/85:30 am
GEG
- BNA
1 stop6h 51m
Delta
Deal found 6/18![Delta logo]()
$331
Last-minute flights from Kentucky to IdahoDiscover last-minute flight deals from Kentucky to Idaho. Data last updated June 18, 2026 and is based on user searches.
Discover last-minute flight deals from Kentucky to Idaho. Data last updated June 18, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/16. 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 6/246:44 pm
BNA
- GEG
1 stop6h 23m
Delta
Fri 6/2610:48 pm
GEG
- BNA
1 stop7h 44m
Delta
Deal found 6/16![Delta logo]()
$303
This Delta deal was found by Cheapflights users on 6/16. 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 6/265:20 pm
BNA
- GEG
1 stop8h 35m
Delta
Tue 6/305:20 am
GEG
- BNA
1 stop6h 24m
Delta
Deal found 6/16![Delta logo]()
$293
This Delta deal was found by Cheapflights users on 6/17. 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 7/12:50 pm
BNA
- BOI
1 stop9h 14m
Delta
Thu 7/911:10 pm
BOI
- BNA
1 stop8h 31m
Delta
Deal found 6/17![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 6/16. 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.
Sat 7/45:00 pm
BNA
- GEG
1 stop7h 32m
Delta
Thu 7/91:30 pm
GEG
- BNA
1 stop7h 35m
Delta
Deal found 6/16![Delta logo]()
$283
This United Airlines deal was found by Cheapflights users on 6/16. 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.
Sat 7/410:00 am
BNA
- GEG
2 stops12h 30m
United Airlines
Fri 7/107:07 pm
GEG
- BNA
1 stop9h 30m
United Airlines
Deal found 6/16![United Airlines logo]()
$304
This Southwest deal was found by Cheapflights users on 6/13. 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 7/45:15 am
BNA
- GEG
1 stop5h 50m
Southwest
Fri 7/105:30 pm
GEG
- BNA
1 stop9h 40m
Southwest
Deal found 6/13![Southwest logo]()
$321
This CheapOair deal was found by Cheapflights users on 6/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/812:17 pm
BNA
- BOI
1 stop25h 12m
Frontier
Tue 7/141:24 pm
BOI
- BNA
1 stop21h 08m
Frontier
Deal found 6/17![Frontier logo]()
$285
This Delta deal was found by Cheapflights users on 6/16. 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.
Thu 7/96:45 pm
BNA
- BOI
1 stop6h 01m
Delta
Thu 7/1611:10 pm
BOI
- BNA
1 stop7h 28m
Delta
Deal found 6/16![Delta logo]()
$319
This American Airlines deal was found by Cheapflights users on 6/18. 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.
Sat 7/113:32 pm
BNA
- BOI
1 stop8h 49m
American Airlines
Sat 7/183:54 pm
BOI
- BNA
1 stop6h 34m
American Airlines
Deal found 6/18![American Airlines logo]()
$308
This Delta deal was found by Cheapflights users on 6/18. 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.
Tue 7/142:59 pm
BNA
- BOI
1 stop8h 59m
Delta
Tue 7/214:00 pm
BOI
- BNA
1 stop7h 33m
Delta
Deal found 6/18![Delta logo]()
$303
This American Airlines deal was found by Cheapflights users on 6/16. 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.
Tue 7/144:36 pm
BNA
- BOI
1 stop7h 45m
American Airlines
Tue 7/213:54 pm
BOI
- BNA
1 stop6h 34m
American Airlines
Deal found 6/16![American Airlines logo]()
$306
This Southwest deal was found by Cheapflights users on 6/16. 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.
Tue 7/285:45 am
BNA
- BOI
1 stop6h 20m
Southwest
Sat 8/15:10 pm
BOI
- BNA
1 stop6h 40m
Southwest
Deal found 6/16![Southwest logo]()
$318
One-way flights from Kentucky to IdahoSearch for one-way flight options from Kentucky to Idaho. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
Search for one-way flight options from Kentucky to Idaho. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
This CheapOair deal was found by Cheapflights users on 6/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/812:17 pm
BNA
- BOI
1 stop25h 12m
Frontier
Deal found 6/16![Frontier logo]()
$131
This Delta deal was found by Cheapflights users on 6/15. 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.
Sat 7/46:00 am
BNA
- GEG
1 stop7h 40m
Delta
Deal found 6/15![Delta logo]()
$142
This Delta deal was found by Cheapflights users on 6/16. 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 6/265:20 pm
BNA
- GEG
1 stop8h 35m
Delta
Deal found 6/16![Delta logo]()
$152
This Booking.com deal was found by Cheapflights users on 6/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:19 pm
TYS
- BOI
1 stop18h 10m
Frontier
Deal found 6/17![Frontier logo]()
$152
This Delta deal was found by Cheapflights users on 6/16. 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 7/72:59 pm
BNA
- BOI
1 stop8h 59m
Delta
Deal found 6/16![Delta logo]()
$152
This American Airlines deal was found by Cheapflights users on 6/14. 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 7/218:01 am
BNA
- BOI
2 stops9h 48m
American Airlines
Deal found 6/14![American Airlines logo]()
$157
This American Airlines deal was found by Cheapflights users on 6/14. 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 8/66:00 am
BNA
- BOI
1 stop6h 16m
American Airlines
Deal found 6/14![American Airlines logo]()
$160
This CheapOair deal was found by Cheapflights users on 6/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/34:58 pm
BNA
- BOI
1 stop7h 56m
Alaska Airlines
Deal found 6/17![Alaska Airlines logo]()
$172
This Southwest deal was found by Cheapflights users on 6/17. 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.
Fri 8/211:20 pm
BNA
- BOI
1 stop8h 20m
Southwest
Deal found 6/17![Southwest logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1512:36 pm
CVG
- GEG
2 stops34h 48m
Allegiant Air
Deal found 6/18![Allegiant Air logo]()
$176
This Southwest deal was found by Cheapflights users on 6/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:30 am
BNA
- BOI
2 stops9h 00m
Southwest
Deal found 6/15![Southwest logo]()
$177
This Delta deal was found by Cheapflights users on 6/17. 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.
Tue 7/147:34 pm
BNA
- GEG
1 stop6h 21m
Delta
Deal found 6/17![Delta logo]()
$180
Find flight deals from Kentucky to Idaho
Keep the following information in mind while searching for Kentucky to Idaho flight deals. Data was last updated June 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $283 (Delta) |
One-way from | $131 (CheapOair) |
Popular in | December |
Cheapest in | September |
Average price | $524 |
Cheapflights Fare Finder
Customize your flight search to find flights from Kentucky to Idaho 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 June 18, 2026.
Use the filters below to find and compare flights from Kentucky to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
NashvilleSpokane
BNA - GEG
BNAGEG
Nashville Intl
Thu 8/13
6:43 pm-11:09 pm
1 stop6h 26m
Spokane
Sun 8/16
6:45 am-5:34 pm
1 stop8h 49m
$283
NashvilleSpokane
BNA - GEG
BNAGEG
Nashville Intl
Mon 7/27
6:45 pm-11:06 pm
1 stop6h 21m
Spokane
Mon 8/3
1:00 pm-11:55 pm
1 stop8h 55m
$283
NashvilleSpokane
BNA - GEG
BNAGEG
Nashville Intl
Tue 8/4
7:30 am-12:22 pm
1 stop6h 52m
Spokane
Tue 8/11
1:00 pm-11:55 pm
1 stop8h 55m
$283
NashvilleSpokane
BNA - GEG
BNAGEG
Nashville Intl
Sat 9/19
7:35 am-2:35 pm
2 stops9h 00m
Spokane
Tue 9/22
12:35 pm-10:00 pm
1 stop7h 25m
$288
NashvilleSpokane
BNA - GEG
BNAGEG
Nashville Intl
Tue 8/4
6:03 pm-11:59 pm
1 stop7h 56m
Spokane
Tue 8/11
5:00 am-5:00 pm
1 stop10h 00m
$303
NashvilleSpokane
BNA - GEG
BNAGEG
Nashville Intl
Sat 9/19
6:00 am-12:53 pm
1 stop8h 53m
Spokane
Mon 9/21
1:00 pm-11:59 pm
1 stop8h 59m
$303
NashvilleBoise
BNA - BOI
BNABOI
Nashville Intl
Wed 7/8
7:34 pm-12:05 am
1 stop5h 31m
Boise Air Term. Gowen Fld
Tue 7/14
4:00 pm-12:33 am
1 stop7h 33m
$303
NashvilleBoise
BNA - BOI
BNABOI
Nashville Intl
Tue 7/14
5:00 pm-11:51 pm
1 stop7h 51m
Boise Air Term. Gowen Fld
Tue 7/21
10:29 am-5:35 pm
1 stop6h 06m
$303
NashvilleBoise
BNA - BOI
BNABOI
Nashville Intl
Wed 7/1
2:50 pm-11:04 pm
1 stop9h 14m
Boise Air Term. Gowen Fld
Wed 7/8
11:10 pm-7:38 am
1 stop7h 28m
$303
NashvilleBoise
BNA - BOI
BNABOI
Nashville Intl
Thu 8/13
3:52 pm-11:59 pm
1 stop9h 07m
Boise Air Term. Gowen Fld
Mon 8/17
2:53 pm-10:16 pm
1 stop6h 23m
$319
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Kentucky to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Kentucky with our price prediction graph.
BNA-GEG
BNA-JAC
BNA-BOI
TYS-BOI
TYS-JAC
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 Kentucky to Idaho
USKY-USID
BNA-GEG
BNA-JAC
BNA-BOI
TYS-BOI
What is the cheapest month to book a flight from Kentucky to Idaho?
Currently, August is the cheapest month in which you can book a flight from Kentucky to Idaho (average of $196). Flying from Kentucky to Idaho in June is currently the most expensive (average of $472). 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.
Reviews of airlines servicing Idaho
Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated June 18, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Kentucky to Idaho have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
Find useful and relevant information for your journey from Kentucky to Idaho. 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
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Kentucky to Idaho
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Idaho by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Kentucky to Idaho by cabin class
Find flights from Kentucky to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Kentucky and Idaho flights
Browse other Kentucky and Idaho flight options. Last updated on June 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Idaho
Find the right flight back to Kentucky after your stay in Idaho
Kentucky to Idaho flights
Consider these flights traveling from Kentucky to Idaho.
Top 4 airlines flying from Kentucky to Idaho
Discover the top 4 airlines that operate flights from Kentucky to Idaho. 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 June 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$196 | Average$412 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$288 | Average$524 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$327 | Average$483 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$401 | Average$462 | FlexibilityNo cancel fee | On-time63% |