$119+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — BOI
Aug 30 — Sep 61
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 July 31, 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 July 31, 2026.
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/242:45 pm
BNA
- BOI
1 stop7h 52m
United Airlines
Tue 8/256:15 am
BOI
- BNA
1 stop7h 52m
United Airlines
Deal found 7/28![United Airlines logo]()
$232
This American Airlines deal was found by Cheapflights users on 7/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/283:38 pm
BNA
- GEG
1 stop7h 04m
American Airlines
Sun 8/305:40 am
GEG
- BNA
1 stop8h 22m
American Airlines
Deal found 7/26![American Airlines logo]()
$237
This Southwest deal was found by Cheapflights users on 7/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:10 pm
BNA
- BOI
1 stop6h 25m
Southwest
Tue 8/252:25 pm
BOI
- BNA
1 stop6h 20m
Southwest
Deal found 7/28![Southwest logo]()
$237
This Southwest deal was found by Cheapflights users on 7/29. 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 8/216:40 pm
BNA
- GEG
1 stop6h 00m
Southwest
Fri 8/286:30 am
GEG
- BNA
2 stops7h 20m
Southwest
Deal found 7/29![Southwest logo]()
$242
This American Airlines deal was found by Cheapflights users on 7/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:00 am
BNA
- BOI
1 stop7h 16m
American Airlines
Wed 8/261:55 pm
BOI
- BNA
2 stops8h 32m
American Airlines
Deal found 7/26![American Airlines logo]()
$242
This CheapOair deal was found by Cheapflights users on 7/29. 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.
Thu 10/292:53 pm
BNA
- BOI
1 stop25h 04m
Frontier
Sun 11/13:52 pm
BOI
- BNA
1 stop21h 06m
Frontier
Deal found 7/29![Frontier logo]()
$244
This American Airlines deal was found by Cheapflights users on 7/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:38 pm
BNA
- BOI
1 stop7h 33m
American Airlines
Tue 8/256:44 am
BOI
- BNA
1 stop7h 04m
American Airlines
Deal found 7/28![American Airlines logo]()
$246
This Delta deal was found by Cheapflights users on 7/29. 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 8/195:20 pm
BNA
- GEG
1 stop8h 39m
Delta
Fri 8/281:00 pm
GEG
- BNA
1 stop8h 55m
Delta
Deal found 7/29![Delta logo]()
$247
This Delta deal was found by Cheapflights users on 7/29. 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 8/285:20 pm
BNA
- BOI
1 stop7h 33m
Delta
Sun 8/306:49 am
BOI
- BNA
1 stop8h 04m
Delta
Deal found 7/29![Delta logo]()
$247
This CheapOair deal was found by Cheapflights users on 7/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:49 pm
BNA
- BOI
1 stop25h 06m
Frontier
Sun 9/272:50 pm
BOI
- BNA
1 stop21h 14m
Frontier
Deal found 7/27![Frontier logo]()
$250
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:25 pm
CVG
- GEG
1 stop8h 21m
United Airlines
Wed 8/261:37 pm
GEG
- CVG
1 stop5h 53m
United Airlines
Deal found 7/27![United Airlines logo]()
$257
This CheapOair deal was found by Cheapflights users on 7/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/152:52 pm
BNA
- BOI
1 stop25h 05m
Frontier
Sun 10/183:52 pm
BOI
- BNA
1 stop21h 05m
Frontier
Deal found 7/27![Frontier logo]()
$265
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 July 31, 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 July 31, 2026.
This United Airlines deal was found by Cheapflights users on 7/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2212:33 pm
BNA
- GEG
2 stops10h 13m
United Airlines
Sat 8/296:00 am
GEG
- BNA
1 stop9h 25m
United Airlines
Deal found 7/26![United Airlines logo]()
$242
This Delta deal was found by Cheapflights users on 7/26. 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.
Thu 8/135:20 pm
BNA
- GEG
1 stop8h 39m
Delta
Thu 8/201:00 pm
GEG
- BNA
1 stop8h 55m
Delta
Deal found 7/26![Delta logo]()
$267
This Southwest deal was found by Cheapflights users on 7/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:25 am
BNA
- BOI
2 stops9h 50m
Southwest
Tue 9/16:00 am
BOI
- BNA
1 stop8h 00m
Southwest
Deal found 7/28![Southwest logo]()
$280
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 9/116:34 pm
BNA
- BOI
1 stop16h 22m
Alaska Airlines
Sun 9/135:52 pm
BOI
- BNA
1 stop10h 45m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$359
This American Airlines deal was found by Cheapflights users on 7/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/134:18 pm
SDF
- GEG
1 stop7h 25m
American Airlines
Tue 10/2012:49 pm
GEG
- SDF
1 stop7h 42m
American Airlines
Deal found 7/26![American Airlines logo]()
$363
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Wed 9/165:16 pm
CVG
- BOI
2 stops22h 39m
Frontier
Fri 9/182:50 pm
BOI
- CVG
1 stop13h 57m
Frontier
Deal found 7/29![Frontier logo]()
$389
This Delta deal was found by Cheapflights users on 7/26. 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.
Thu 8/136:35 am
CVG
- GEG
1 stop6h 54m
Delta
Thu 8/207:05 am
GEG
- CVG
1 stop8h 59m
Delta
Deal found 7/26![Delta logo]()
$267
This United Airlines deal was found by Cheapflights users on 7/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:00 am
BNA
- BOI
1 stop6h 28m
United Airlines
Sun 8/308:15 am
BOI
- BNA
1 stop8h 10m
United Airlines
Deal found 7/26![United Airlines logo]()
$268
This Southwest deal was found by Cheapflights users on 7/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:00 am
BNA
- GEG
1 stop7h 40m
Southwest
Fri 8/215:10 pm
GEG
- BNA
1 stop9h 55m
Southwest
Deal found 7/26![Southwest logo]()
$286
This Delta deal was found by Cheapflights users on 7/26. 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.
Fri 8/146:35 am
CVG
- GEG
1 stop6h 54m
Delta
Thu 8/209:25 am
GEG
- CVG
1 stop6h 39m
Delta
Deal found 7/26![Delta logo]()
$267
This Southwest deal was found by Cheapflights users on 7/29. 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 8/287:25 am
BNA
- BOI
2 stops9h 50m
Southwest
Mon 8/314:55 pm
BOI
- BNA
1 stop6h 40m
Southwest
Deal found 7/29![Southwest logo]()
$288
This United Airlines deal was found by Cheapflights users on 7/29. 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.
Wed 8/123:25 pm
CVG
- BOI
1 stop8h 12m
United Airlines
Sat 8/155:00 am
BOI
- CVG
1 stop7h 23m
United Airlines
Deal found 7/29![United Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:20 pm
BNA
- BOI
1 stop7h 33m
Delta
Wed 9/23:29 pm
BOI
- BNA
1 stop7h 26m
Delta
Deal found 7/28![Delta logo]()
$280
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Fri 8/281:46 pm
CVG
- BOI
2 stops10h 54m
American Airlines
Fri 9/43:19 pm
BOI
- CVG
1 stop5h 57m
American Airlines
Deal found 7/30![American Airlines logo]()
$365
This Southwest deal was found by Cheapflights users on 7/29. 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 10/246:00 am
BNA
- GEG
1 stop6h 10m
Southwest
Mon 10/262:30 pm
GEG
- BNA
1 stop7h 00m
Southwest
Deal found 7/29![Southwest logo]()
$313
This Delta deal was found by Cheapflights users on 7/29. 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 8/135:20 pm
BNA
- GEG
1 stop8h 39m
Delta
Sun 8/167:05 am
GEG
- BNA
1 stop6h 48m
Delta
Deal found 7/29![Delta logo]()
$287
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 8/241:46 pm
CVG
- BOI
2 stops11h 58m
Alaska Airlines
Wed 8/266:23 am
BOI
- CVG
2 stops14h 59m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$387
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:00 am
CVG
- GEG
1 stop8h 23m
United Airlines
Wed 9/305:00 am
GEG
- CVG
1 stop6h 25m
United Airlines
Deal found 7/27![United Airlines logo]()
$333
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:20 pm
BNA
- BOI
1 stop7h 33m
Delta
Mon 8/312:53 pm
BOI
- BNA
1 stop6h 23m
Delta
Deal found 7/28![Delta logo]()
$288
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 10/288:39 am
CVG
- BOI
1 stop7h 32m
Alaska Airlines
Fri 10/3010:06 am
BOI
- CVG
1 stop9h 03m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$402
This Southwest deal was found by Cheapflights users on 7/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/185:05 am
BNA
- GEG
1 stop7h 20m
Southwest
Sat 10/246:30 am
GEG
- BNA
1 stop9h 30m
Southwest
Deal found 7/28![Southwest logo]()
$336
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/224:15 pm
BNA
- GEG
1 stop6h 31m
United Airlines
Wed 8/265:00 am
GEG
- BNA
1 stop6h 37m
United Airlines
Deal found 7/27![United Airlines logo]()
$337
This American Airlines deal was found by Cheapflights users on 7/30. 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 8/291:53 pm
TYS
- IDA
1 stop9h 27m
American Airlines
Wed 9/92:08 pm
IDA
- TYS
1 stop7h 14m
American Airlines
Deal found 7/30![American Airlines logo]()
$430
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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.
Tue 11/178:36 am
CVG
- GEG
1 stop8h 46m
Alaska Airlines
Wed 11/189:54 am
GEG
- CVG
1 stop8h 12m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$403
This Southwest deal was found by Cheapflights users on 7/30. 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 9/245:20 am
BNA
- BOI
1 stop7h 10m
Southwest
Thu 9/244:55 pm
BOI
- BNA
1 stop6h 45m
Southwest
Deal found 7/30![Southwest logo]()
$338
This United Airlines deal was found by Cheapflights users on 7/30. 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.
Mon 10/196:00 am
TYS
- JAC
1 stop7h 21m
United Airlines
Sat 10/3110:37 am
JAC
- TYS
2 stops9h 20m
United Airlines
Deal found 7/30![United Airlines logo]()
$357
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:15 am
TYS
- JAC
2 stops12h 02m
American Airlines
Thu 9/1012:47 pm
JAC
- TYS
1 stop8h 35m
American Airlines
Deal found 7/27![American Airlines logo]()
$451
This Delta deal was found by Cheapflights users on 7/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/37:05 am
BNA
- JAC
1 stop6h 07m
Delta
Thu 1/71:10 pm
JAC
- BNA
1 stop8h 05m
Delta
Deal found 7/27![Delta logo]()
$341
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/161:10 pm
CVG
- GEG
2 stops12h 20m
Southwest
Wed 9/306:15 am
GEG
- CVG
2 stops9h 20m
Southwest
Deal found 7/27![Southwest logo]()
$343
This United Airlines deal was found by Cheapflights users on 7/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/143:25 pm
CVG
- GEG
2 stops10h 11m
United Airlines
Thu 8/205:00 am
GEG
- CVG
1 stop6h 23m
United Airlines
Deal found 7/26![United Airlines logo]()
$362
Last-minute flights from Kentucky to IdahoDiscover last-minute flight deals from Kentucky to Idaho. Data last updated July 31, 2026 and is based on user searches.
Discover last-minute flight deals from Kentucky to Idaho. Data last updated July 31, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:20 pm
BNA
- GEG
1 stop8h 39m
Delta
Wed 8/191:00 pm
GEG
- BNA
1 stop8h 55m
Delta
Deal found 7/27![Delta logo]()
$267
This Delta deal was found by Cheapflights users on 7/26. 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.
Thu 8/136:35 am
CVG
- GEG
1 stop6h 54m
Delta
Thu 8/207:05 am
GEG
- CVG
1 stop8h 59m
Delta
Deal found 7/26![Delta logo]()
$267
This Delta deal was found by Cheapflights users on 7/29. 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 8/195:20 pm
BNA
- GEG
1 stop8h 39m
Delta
Fri 8/281:00 pm
GEG
- BNA
1 stop8h 55m
Delta
Deal found 7/29![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 7/29. 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 8/216:40 pm
BNA
- GEG
1 stop6h 00m
Southwest
Fri 8/286:30 am
GEG
- BNA
2 stops7h 20m
Southwest
Deal found 7/29![Southwest logo]()
$242
This United Airlines deal was found by Cheapflights users on 7/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:00 am
BNA
- BOI
1 stop6h 28m
United Airlines
Sun 8/308:15 am
BOI
- BNA
1 stop8h 10m
United Airlines
Deal found 7/26![United Airlines logo]()
$268
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/242:45 pm
BNA
- BOI
1 stop7h 52m
United Airlines
Tue 8/256:15 am
BOI
- BNA
1 stop7h 52m
United Airlines
Deal found 7/28![United Airlines logo]()
$232
This Southwest deal was found by Cheapflights users on 7/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:10 pm
BNA
- BOI
1 stop6h 25m
Southwest
Tue 8/252:25 pm
BOI
- BNA
1 stop6h 20m
Southwest
Deal found 7/28![Southwest logo]()
$237
This American Airlines deal was found by Cheapflights users on 7/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:00 am
BNA
- BOI
1 stop7h 16m
American Airlines
Wed 8/261:55 pm
BOI
- BNA
2 stops8h 32m
American Airlines
Deal found 7/26![American Airlines logo]()
$242
This American Airlines deal was found by Cheapflights users on 7/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:38 pm
BNA
- BOI
1 stop7h 33m
American Airlines
Tue 8/256:44 am
BOI
- BNA
1 stop7h 04m
American Airlines
Deal found 7/28![American Airlines logo]()
$246
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:25 pm
CVG
- GEG
1 stop8h 21m
United Airlines
Wed 8/261:37 pm
GEG
- CVG
1 stop5h 53m
United Airlines
Deal found 7/27![United Airlines logo]()
$257
This American Airlines deal was found by Cheapflights users on 7/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/283:38 pm
BNA
- GEG
1 stop7h 04m
American Airlines
Sun 8/305:40 am
GEG
- BNA
1 stop8h 22m
American Airlines
Deal found 7/26![American Airlines logo]()
$237
This Delta deal was found by Cheapflights users on 7/29. 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 8/285:20 pm
BNA
- BOI
1 stop7h 33m
Delta
Sun 8/306:49 am
BOI
- BNA
1 stop8h 04m
Delta
Deal found 7/29![Delta logo]()
$247
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 July 31, 2026.
Search for one-way flight options from Kentucky to Idaho. Find affordable one-way fares based on user searches. Data last updated July 31, 2026.
This Southwest deal was found by Cheapflights users on 7/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:25 pm
BNA
- GEG
1 stop9h 15m
Southwest
Deal found 7/28![Southwest logo]()
$119
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:00 am
BNA
- BOI
1 stop6h 16m
American Airlines
Deal found 7/27![American Airlines logo]()
$119
This Delta deal was found by Cheapflights users on 7/29. 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 8/305:20 pm
BNA
- GEG
1 stop8h 39m
Delta
Deal found 7/29![Delta logo]()
$124
This Southwest deal was found by Cheapflights users on 7/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/212:35 pm
BNA
- BOI
2 stops10h 00m
Southwest
Deal found 7/28![Southwest logo]()
$124
This United Airlines deal was found by Cheapflights users on 7/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/173:25 pm
CVG
- GEG
1 stop8h 21m
United Airlines
Deal found 7/25![United Airlines logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Wed 10/73:14 pm
BNA
- GEG
2 stops26h 20m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$131
This CheapOair deal was found by Cheapflights users on 7/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:30 pm
CVG
- BOI
1 stop16h 59m
Frontier
Deal found 7/28![Frontier logo]()
$132
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:35 am
CVG
- GEG
1 stop6h 54m
Delta
Deal found 7/28![Delta logo]()
$134
This United Airlines deal was found by Cheapflights users on 7/30. 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 8/132:54 pm
BNA
- GEG
1 stop9h 42m
United Airlines
Deal found 7/30![United Airlines logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:14 pm
BNA
- BOI
2 stops23h 41m
Frontier
Deal found 7/28![Frontier logo]()
$140
This Delta deal was found by Cheapflights users on 7/29. 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 8/135:20 pm
BNA
- GEG
1 stop8h 39m
Delta
Deal found 7/29![Delta logo]()
$144
This SmartFares deal was found by Cheapflights users on 7/26. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:34 pm
BNA
- GEG
1 stop7h 25m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$145
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 July 31, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $232 (United Airlines) |
One-way from | $119 (Southwest) |
Popular in | December |
Cheapest in | September |
Average price | $462 |
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 July 31, 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
Sat 8/22
12:33 pm-8:46 pm
2 stops10h 13m
Spokane
Sat 8/29
6:00 am-5:25 pm
1 stop9h 25m
$242
NashvilleSpokane
BNA - GEG
BNAGEG
Nashville Intl
Thu 8/13
5:20 pm-11:59 pm
1 stop8h 39m
Spokane
Thu 8/20
1:00 pm-11:55 pm
1 stop8h 55m
$267
CincinnatiSpokane
CVG - GEG
CVGGEG
Cincinnati Cinci./N. Kentucky
Thu 8/13
6:35 am-10:29 am
1 stop6h 54m
Spokane
Thu 8/20
7:05 am-7:04 pm
1 stop8h 59m
$267
CincinnatiSpokane
CVG - GEG
CVGGEG
Cincinnati Cinci./N. Kentucky
Fri 8/14
6:35 am-10:29 am
1 stop6h 54m
Spokane
Thu 8/20
9:25 am-7:04 pm
1 stop6h 39m
$267
NashvilleBoise
BNA - BOI
BNABOI
Nashville Intl
Sun 8/23
6:00 am-11:28 am
1 stop6h 28m
Boise Air Term. Gowen Fld
Sun 8/30
8:15 am-5:25 pm
1 stop8h 10m
$268
NashvilleBoise
BNA - BOI
BNABOI
Nashville Intl
Fri 8/28
7:25 am-4:15 pm
2 stops9h 50m
Boise Air Term. Gowen Fld
Tue 9/1
6:00 am-3:00 pm
1 stop8h 00m
$280
NashvilleBoise
BNA - BOI
BNABOI
Nashville Intl
Fri 8/28
5:20 pm-11:53 pm
1 stop7h 33m
Boise Air Term. Gowen Fld
Wed 9/2
3:29 pm-11:55 pm
1 stop7h 26m
$280
NashvilleSpokane
BNA - GEG
BNAGEG
Nashville Intl
Fri 8/21
6:00 am-11:40 am
1 stop7h 40m
Spokane
Fri 8/21
5:10 pm-5:05 am
1 stop9h 55m
$286
NashvilleSpokane
BNA - GEG
BNAGEG
Nashville Intl
Thu 8/13
5:20 pm-11:59 pm
1 stop8h 39m
Spokane
Sun 8/16
7:05 am-3:53 pm
1 stop6h 48m
$287
NashvilleBoise
BNA - BOI
BNABOI
Nashville Intl
Fri 8/28
7:25 am-4:15 pm
2 stops9h 50m
Boise Air Term. Gowen Fld
Mon 8/31
4:55 pm-12:35 am
1 stop6h 40m
$288
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-BOI
SDF-GEG
CVG-BOI
CVG-GEG
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-BOI
SDF-GEG
CVG-BOI
What is the cheapest month to book a flight from Kentucky to Idaho?
Currently, September is the cheapest month in which you can book a flight from Kentucky to Idaho (average of $306). Flying from Kentucky to Idaho in December is currently the most expensive (average of $700). 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 July 31, 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.
Comfort
8.0
Food
7.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Food
7.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Food
7.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Food
7.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Food
7.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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 July 31, 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 July 31, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$288 | Average$553 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$327 | Average$467 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$331 | Average$469 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$401 | Average$462 | FlexibilityNo cancel fee | On-time63% |