$97+ Cheap flights from Colorado to Idaho
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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
Oct 15 — Oct 221
Round-trip
1 adult, Economy
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Cheapest flights from Colorado to IdahoExplore the most affordable flight options available from Colorado to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2026.
Explore the most affordable flight options available from Colorado to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2026.
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:50 am -
Nonstop1h 55m
Sat 10/32:25 pm -
Nonstop1h 50m
Deal found 9/10![Southwest logo]()
$197
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:00 am -
1 stop4h 50m
Mon 11/93:55 pm -
Nonstop1h 50m
Deal found 9/10![Southwest logo]()
$207
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/169:00 am -
Nonstop2h 00m
Wed 12/1612:40 pm -
2 stops8h 35m
Deal found 9/10![Southwest logo]()
$212
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:20 pm -
Nonstop2h 00m
Thu 10/2212:45 pm -
1 stop10h 25m
Deal found 9/10![Southwest logo]()
$213
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:00 am -
1 stop4h 50m
Tue 11/1011:40 am -
1 stop5h 35m
Deal found 9/10![Southwest logo]()
$217
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:40 am -
Nonstop1h 54m
Wed 10/76:25 am -
Nonstop2h 01m
Deal found 9/14![United Airlines logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:30 am -
1 stop6h 25m
Mon 10/54:18 pm -
1 stop6h 19m
Deal found 9/10![Multiple Airlines logo]()
$220
This Priceline deal was found by Cheapflights users on 9/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:07 am -
1 stop5h 28m
Thu 10/294:20 pm -
1 stop5h 16m
Deal found 9/14![Alaska Airlines logo]()
$225
This Expedia deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:30 pm -
1 stop17h 05m
Mon 10/54:18 pm -
1 stop6h 19m
Deal found 9/10![Alaska Airlines logo]()
$230
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/144:25 pm -
1 stop6h 05m
Wed 10/213:20 pm -
Nonstop1h 50m
Deal found 9/14![Southwest logo]()
$231
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/410:15 am -
1 stop5h 35m
Tue 11/105:45 am -
1 stop7h 15m
Deal found 9/14![Southwest logo]()
$240
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:40 pm -
1 stop5h 15m
Tue 10/204:40 pm -
1 stop5h 05m
Deal found 9/14![Southwest logo]()
$246
Best flights from Colorado to IdahoDiscover carefully curated flight deals from Colorado to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
Discover carefully curated flight deals from Colorado to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 11/101:55 pm -
1 stop5h 58m
Wed 11/116:37 am -
1 stop7h 21m
Deal found 9/14![Alaska Airlines logo]()
$219
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:40 pm -
1 stop5h 15m
Tue 10/204:40 pm -
1 stop5h 05m
Deal found 9/14![Southwest logo]()
$246
This Delta deal was found by Cheapflights users on 9/14. 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.
Mon 10/196:07 pm -
1 stop5h 52m
Wed 10/216:49 pm -
1 stop3h 33m
Deal found 9/14![Delta logo]()
$255
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/317:35 pm -
Nonstop2h 08m
Sat 1/95:26 pm -
Nonstop1h 53m
Deal found 9/10![United Airlines logo]()
$277
This American Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2811:54 am -
1 stop6h 15m
Sat 1/3012:34 pm -
1 stop6h 02m
Deal found 9/10![American Airlines logo]()
$380
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/43:10 pm -
2 stops8h 05m
Thu 11/510:15 am -
2 stops7h 40m
Deal found 9/14![Southwest logo]()
$267
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:40 am -
Nonstop1h 54m
Wed 10/215:00 am -
Nonstop2h 10m
Deal found 9/10![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:45 am -
1 stop6h 29m
Tue 10/1311:18 am -
1 stop5h 29m
Deal found 9/10![Delta logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:45 am -
2 stops14h 14m
Wed 10/211:32 pm -
1 stop4h 53m
Deal found 9/10![Alaska Airlines logo]()
$288
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:10 pm -
1 stop4h 55m
Mon 10/266:10 am -
1 stop5h 50m
Deal found 9/14![Southwest logo]()
$272
This Delta deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:00 am -
1 stop7h 19m
Tue 12/13:26 pm -
1 stop7h 22m
Deal found 9/11![Delta logo]()
$297
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Fri 10/231:40 pm -
Nonstop1h 44m
Sun 10/2510:35 am -
Nonstop1h 50m
Deal found 9/13![United Airlines logo]()
$299
This Alaska Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1011:33 am -
1 stop5h 16m
Thu 3/116:00 am -
1 stop4h 39m
Deal found 9/11![Alaska Airlines logo]()
$342
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:00 pm -
2 stops7h 10m
Wed 10/2112:55 pm -
2 stops8h 50m
Deal found 9/14![Southwest logo]()
$314
This United Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2911:45 am -
Nonstop1h 39m
Wed 10/74:05 pm -
Nonstop1h 52m
Deal found 9/12![United Airlines logo]()
$314
This Delta deal was found by Cheapflights users on 9/13. 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.
Tue 10/136:00 pm -
1 stop4h 10m
Wed 10/216:56 pm -
1 stop3h 44m
Deal found 9/13![Delta logo]()
$319
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1211:55 am -
1 stop5h 05m
Sun 11/1511:15 am -
Nonstop1h 50m
Deal found 9/14![Southwest logo]()
$319
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/45:10 pm -
1 stop5h 49m
Tue 11/105:44 pm -
1 stop4h 19m
Deal found 9/14![United Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:11 pm -
1 stop6h 18m
Tue 10/65:04 pm -
1 stop4h 18m
Deal found 9/10![Delta logo]()
$325
This Delta deal was found by Cheapflights users on 9/13. 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.
Tue 10/276:00 pm -
1 stop4h 10m
Tue 11/36:00 am -
1 stop3h 44m
Deal found 9/13![Delta logo]()
$334
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:30 am -
1 stop6h 20m
Sun 11/153:55 pm -
Nonstop1h 50m
Deal found 9/14![Southwest logo]()
$335
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:40 am -
Nonstop1h 54m
Mon 10/55:30 pm -
Nonstop2h 01m
Deal found 9/14![United Airlines logo]()
$346
This Alaska Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/137:59 pm -
2 stops22h 15m
Tue 11/177:03 am -
1 stop28h 54m
Deal found 9/12![Alaska Airlines logo]()
$433
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:35 am -
2 stops7h 40m
Tue 11/175:00 am -
2 stops11h 10m
Deal found 9/10![Delta logo]()
$343
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:55 am -
2 stops7h 25m
Mon 10/196:50 pm -
2 stops13h 25m
Deal found 9/14![Southwest logo]()
$346
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/258:00 am -
Nonstop1h 53m
Sat 11/289:40 pm -
Nonstop1h 50m
Deal found 9/11![United Airlines logo]()
$349
This Alaska Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/139:00 am -
1 stop9h 08m
Fri 3/1910:20 am -
1 stop9h 11m
Deal found 9/10![Alaska Airlines logo]()
$439
This Delta deal was found by Cheapflights users on 9/13. 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.
Tue 9/298:05 am -
1 stop4h 10m
Sat 10/31:05 pm -
1 stop3h 57m
Deal found 9/13![Delta logo]()
$349
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/268:00 am -
Nonstop1h 53m
Sat 11/289:40 pm -
Nonstop1h 50m
Deal found 9/11![United Airlines logo]()
$349
This Alaska Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:41 pm -
1 stop16h 05m
Tue 9/2910:28 am -
1 stop6h 15m
Deal found 9/10![Alaska Airlines logo]()
$449
Last-minute flights from Colorado to IdahoDiscover last-minute flight deals from Colorado to Idaho. Data last updated September 15, 2026 and is based on user searches.
Discover last-minute flight deals from Colorado to Idaho. Data last updated September 15, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:30 am -
1 stop6h 25m
Mon 10/54:18 pm -
1 stop6h 19m
Deal found 9/10![Multiple Airlines logo]()
$220
This Expedia deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:30 pm -
1 stop17h 05m
Mon 10/54:18 pm -
1 stop6h 19m
Deal found 9/10![Alaska Airlines logo]()
$230
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:50 am -
Nonstop1h 55m
Sat 10/32:25 pm -
Nonstop1h 50m
Deal found 9/10![Southwest logo]()
$197
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:40 am -
Nonstop1h 54m
Wed 10/76:25 am -
Nonstop2h 01m
Deal found 9/14![United Airlines logo]()
$219
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:40 pm -
1 stop5h 15m
Tue 10/204:40 pm -
1 stop5h 05m
Deal found 9/14![Southwest logo]()
$246
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:25 am -
1 stop5h 17m
Wed 10/216:00 am -
1 stop3h 44m
Deal found 9/10![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/144:25 pm -
1 stop6h 05m
Wed 10/213:20 pm -
Nonstop1h 50m
Deal found 9/14![Southwest logo]()
$231
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:42 pm -
1 stop6h 08m
Sat 10/174:30 pm -
1 stop6h 25m
Deal found 9/10![Delta logo]()
$263
This Delta deal was found by Cheapflights users on 9/14. 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.
Mon 10/196:07 pm -
1 stop5h 52m
Wed 10/216:49 pm -
1 stop3h 33m
Deal found 9/14![Delta logo]()
$255
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:10 pm -
1 stop4h 55m
Wed 10/2112:55 pm -
2 stops8h 50m
Deal found 9/14![Southwest logo]()
$261
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:20 pm -
Nonstop2h 00m
Thu 10/2212:45 pm -
1 stop10h 25m
Deal found 9/10![Southwest logo]()
$213
This Priceline deal was found by Cheapflights users on 9/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:07 am -
1 stop5h 28m
Thu 10/294:20 pm -
1 stop5h 16m
Deal found 9/14![Alaska Airlines logo]()
$225
One-way flights from Colorado to IdahoSearch for one-way flight options from Colorado to Idaho. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
Search for one-way flight options from Colorado to Idaho. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:42 pm -
1 stop19h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Frontier logo]()
$97
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:25 pm -
Nonstop2h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Southwest logo]()
$99
This Alaska Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:59 pm -
1 stop17h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Alaska Airlines logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/610:44 pm -
2 stops39h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/111:10 pm -
2 stops24h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$106
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1010:55 pm -
2 stops38h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$107
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/64:30 pm -
1 stop6h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Southwest logo]()
$109
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 11/107:33 am -
1 stop5h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Alaska Airlines logo]()
$110
This Trip.com deal was found by Cheapflights users on 9/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:07 am -
1 stop8h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Alaska Airlines logo]()
$111
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:55 am -
2 stops7h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Southwest logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:45 pm -
2 stops19h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$118
This Alaska Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1011:33 am -
1 stop5h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Alaska Airlines logo]()
$119
Find flight deals from Colorado to Idaho
Keep the following information in mind while searching for Colorado to Idaho flight deals. Data was last updated September 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $197 (Southwest) |
One-way from | $97 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $305 |
Good round-trip deal | $274 or less |
Good one-way deal | $173 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Colorado 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 7,457,451 searches. Data last updated September 15, 2026.
Use the filters below to find and compare flights from Colorado to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DenverBoise
DEN Denver Intl - BOI Boise Air Term. Gowen Fld
DENBOI
Denver Intl
Tue 12/8
9:00 am-4:11 pm
1 stop7h 11m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$99
DenverBoise
DEN Denver Intl - BOI Boise Air Term. Gowen Fld
DENBOI
Denver Intl
Mon 12/7
9:00 am-3:05 pm
1 stop6h 05m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$99
DenverBoise
DEN Denver Intl - BOI Boise Air Term. Gowen Fld
DENBOI
Denver Intl
Mon 10/5
7:55 pm-1:05 am
1 stop5h 10m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$109
DenverSpokane
DEN Denver Intl - GEG Spokane
DENGEG
Denver Intl
Sat 12/12
11:33 am-3:40 pm
1 stop5h 07m
Spokane
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$119
DenverSpokane
DEN Denver Intl - GEG Spokane
DENGEG
Denver Intl
Thu 12/10
11:33 am-3:40 pm
1 stop5h 07m
Spokane
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$119
Colorado SpringsBoise
COS Colorado Springs - BOI Boise Air Term. Gowen Fld
COSBOI
Colorado Springs
Sun 10/25
5:49 pm-12:40 pm
1 stop18h 51m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$151
DenverSpokane
DEN Denver Intl - GEG Spokane
DENGEG
Denver Intl
Mon 10/19
7:25 pm-8:49 pm
Nonstop2h 24m
Spokane
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$154
DenverBoise
DEN Denver Intl - BOI Boise Air Term. Gowen Fld
DENBOI
Denver Intl
Tue 3/9
5:00 pm-12:11 am
1 stop7h 11m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$164
DenverBoise
DEN Denver Intl - BOI Boise Air Term. Gowen Fld
DENBOI
Denver Intl
Thu 12/10
9:00 am-11:00 am
Nonstop2h 00m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$165
Quickest round-trip
DenverBoise
DEN Denver Intl - BOI Boise Air Term. Gowen Fld
DENBOI
Denver Intl
Thu 10/8
7:40 am-9:34 am
Nonstop1h 54m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$165
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Colorado to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Colorado with our price prediction graph.
DEN-BOI
COS-BOI
DEN-GEG
GJT-BOI
COS-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 Colorado to Idaho
USCO-USID
DEN-BOI
COS-BOI
DEN-GEG
GJT-BOI
What is the cheapest month to book a flight from Colorado to Idaho?
Currently, February is the cheapest month in which you can book a flight from Colorado to Idaho (average of $207). Flying from Colorado to Idaho in July is currently the most expensive (average of $362). 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.
What is the cheapest time of day to fly from CO to ID?
Find hourly flight availability from Colorado to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2026.
It’s typically best to fly out from Colorado to Idaho in the afternoon. Doing so could potentially save you 19% on the flight price compared to flying at noon, which is usually more expensive.
Weekly flight availability from Colorado to Idaho
Explore weekly flight availability from Colorado to Idaho. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 15, 2026.
The most flights from USCO to USID are scheduled on a Monday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 on average).
How much does it cost to fly round-trip from Colorado to Idaho?
Airfare is below average for this route at the moment.
Colorado to Idaho flights typically cost between $238 and $392 in October.The cheapest round-trip price found within the last 5 days was $197 on Southwest (Oct 3-Oct 3).
How far ahead should I book a flight from Colorado to Idaho?
To ensure you get the cheapest price possible for a flight from Colorado to Idaho, you should look to book at least 80 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest day to fly from Colorado to Idaho?
Use this chart to determine the cheapest time to fly round-trip from Colorado to Idaho. Price data was last updated on September 12, 2026.
Travelers seeking maximum savings on their Colorado to Idaho flight should consider departing on Thursday mornings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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 September 15, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Colorado to Idaho by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Related info for your journey
Find useful and relevant information for your journey from Colorado 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
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Alternative routes for Colorado 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 Colorado to Idaho by cabin class
Find flights from Colorado to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Colorado and Idaho flights
Browse other Colorado and Idaho flight options. Last updated on September 15, 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 Colorado after your stay in Idaho
Colorado to Idaho flights
Consider these flights traveling from Colorado to Idaho.
Top 4 airlines flying from Colorado to Idaho
Discover the top 4 airlines that operate flights from Colorado 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 7,457,451 searches. Data last updated September 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$54 | Average$141 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$68 | Average$381 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$181 | Average$403 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$189 | Average$380 | FlexibilityNo cancel fee | On-time63% |