$51+ Cheap flights from Idaho to Colorado
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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
Jul 16 — Jul 231
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to Colorado with Cheapflights
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Cheapest flights from Idaho to ColoradoExplore the most affordable flight options available from Idaho to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 16, 2026.
Explore the most affordable flight options available from Idaho to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 16, 2026.
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:59 pm
BOI
- DEN
Nonstop2h 01m
Frontier
Thu 9/179:55 am
DEN
- BOI
Nonstop2h 09m
Frontier
Deal found 6/15![Frontier logo]()
$172
This Priceline deal was found by Cheapflights users on 6/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:59 pm
BOI
- DEN
Nonstop2h 01m
Frontier
Thu 10/18:30 am
DEN
- BOI
1 stop6h 27m
Frontier
Deal found 6/11![Frontier logo]()
$180
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/301:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Tue 8/410:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 6/16![Frontier logo]()
$181
This Frontier deal was found by Cheapflights users on 6/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/211:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Tue 7/2810:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 6/12![Frontier logo]()
$182
This Frontier deal was found by Cheapflights users on 6/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/31:04 pm
BOI
- DEN
Nonstop2h 05m
Frontier
Sun 9/610:08 am
DEN
- BOI
Nonstop2h 01m
Frontier
Deal found 6/11![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/34:17 pm
BOI
- DEN
1 stop5h 19m
Multiple Airlines
Tue 10/69:55 am
DEN
- BOI
Nonstop2h 09m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$187
This 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/141:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Sun 7/1910:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 6/13![Frontier logo]()
$191
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/211:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Wed 7/299:08 pm
DEN
- BOI
1 stop12h 32m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$195
This 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/141:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Tue 7/2110:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 6/13![Frontier logo]()
$196
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/81:04 pm
BOI
- DEN
Nonstop2h 05m
Multiple Airlines
Tue 9/151:43 pm
DEN
- BOI
1 stop6h 37m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$198
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/301:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Thu 8/610:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 6/14![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
Mon 8/1710:54 pm
IDA
- DEN
1 stop10h 36m
Multiple Airlines
Wed 8/192:23 pm
DEN
- IDA
1 stop28h 41m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$233
Best flights from Idaho to ColoradoDiscover carefully curated flight deals from Idaho to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 16, 2026.
Discover carefully curated flight deals from Idaho to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 16, 2026.
This Delta deal was found by Cheapflights users on 6/11. 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.
Wed 9/1611:10 am
BOI
- DEN
1 stop5h 43m
Delta
Sat 9/191:00 pm
DEN
- BOI
1 stop5h 43m
Delta
Deal found 6/11![Delta logo]()
$229
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:20 am
BOI
- DEN
1 stop12h 06m
Alaska Airlines
Thu 9/176:17 am
DEN
- BOI
1 stop7h 45m
Alaska Airlines
Deal found 6/13![Alaska Airlines logo]()
$277
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.
Fri 7/1712:20 pm
BOI
- DEN
1 stop8h 10m
Southwest
Tue 7/216:00 am
DEN
- BOI
1 stop4h 45m
Southwest
Deal found 6/15![Southwest logo]()
$291
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.
Sat 8/154:04 pm
IDA
- DEN
Nonstop1h 54m
United Airlines
Mon 8/171:39 pm
DEN
- IDA
Nonstop1h 44m
United Airlines
Deal found 6/13![United Airlines logo]()
$318
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.
Wed 9/166:00 am
BOI
- DEN
1 stop3h 36m
Delta
Tue 9/221:00 pm
DEN
- BOI
1 stop4h 50m
Delta
Deal found 6/15![Delta logo]()
$265
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.
Thu 7/165:55 pm
BOI
- COS
1 stop7h 30m
Southwest
Tue 7/217:55 pm
COS
- BOI
1 stop4h 40m
Southwest
Deal found 6/15![Southwest logo]()
$291
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/312:49 pm
GEG
- DRO
1 stop8h 26m
American Airlines
Tue 7/76:43 pm
DRO
- GEG
1 stop5h 23m
American Airlines
Deal found 6/12![American Airlines logo]()
$588
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 9/36:49 pm
BOI
- DEN
1 stop17h 31m
Alaska Airlines
Sun 9/66:17 am
DEN
- BOI
1 stop7h 45m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$307
This Delta deal was found by Cheapflights users on 6/11. 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 9/285:20 pm
GEG
- COS
1 stop4h 34m
Delta
Wed 9/306:14 pm
COS
- GEG
1 stop6h 43m
Delta
Deal found 6/11![Delta logo]()
$283
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.
Wed 9/25:53 pm
IDA
- DEN
Nonstop1h 52m
United Airlines
Sat 9/58:05 am
DEN
- IDA
Nonstop1h 46m
United Airlines
Deal found 6/15![United Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:00 am
BOI
- COS
1 stop4h 35m
Southwest
Fri 7/247:55 pm
COS
- BOI
1 stop5h 20m
Southwest
Deal found 6/11![Southwest logo]()
$300
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 8/188:15 am
GEG
- DEN
1 stop10h 03m
Alaska Airlines
Fri 8/215:34 pm
DEN
- GEG
1 stop7h 25m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$307
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.
Wed 9/308:25 am
BOI
- DEN
1 stop3h 40m
Delta
Fri 10/25:30 am
DEN
- BOI
1 stop4h 31m
Delta
Deal found 6/15![Delta logo]()
$291
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.
Mon 7/135:54 pm
IDA
- DEN
Nonstop1h 51m
United Airlines
Mon 7/2011:45 am
DEN
- IDA
Nonstop1h 40m
United Airlines
Deal found 6/15![United Airlines logo]()
$324
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.
Fri 8/72:55 pm
BOI
- DEN
Nonstop1h 50m
Southwest
Mon 8/104:10 pm
DEN
- BOI
2 stops6h 40m
Southwest
Deal found 6/13![Southwest logo]()
$303
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 8/116:13 pm
BOI
- DEN
2 stops16h 20m
Alaska Airlines
Fri 8/148:40 am
DEN
- BOI
1 stop6h 46m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$317
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 9/295:30 pm
BOI
- DEN
Nonstop2h 01m
United Airlines
Wed 9/307:35 pm
DEN
- BOI
Nonstop2h 00m
United Airlines
Deal found 6/15![United Airlines logo]()
$325
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.
Fri 7/3111:10 am
BOI
- DEN
1 stop5h 50m
Southwest
Fri 8/78:40 pm
DEN
- BOI
Nonstop1h 55m
Southwest
Deal found 6/15![Southwest logo]()
$307
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.
Wed 10/72:28 pm
IDA
- DEN
Nonstop1h 50m
United Airlines
Wed 10/148:05 am
DEN
- IDA
Nonstop1h 48m
United Airlines
Deal found 6/15![United Airlines logo]()
$334
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:23 am
BOI
- DEN
2 stops14h 50m
Alaska Airlines
Sat 9/196:17 am
DEN
- BOI
1 stop7h 45m
Alaska Airlines
Deal found 6/13![Alaska Airlines logo]()
$335
This Delta deal was found by Cheapflights users on 6/11. 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.
Thu 7/95:10 pm
GEG
- GJT
1 stop3h 45m
Delta
Wed 7/156:56 pm
GJT
- GEG
1 stop5h 59m
Delta
Deal found 6/11![Delta logo]()
$335
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.
Fri 7/175:55 pm
BOI
- COS
1 stop7h 30m
Southwest
Tue 7/216:00 am
COS
- BOI
2 stops6h 30m
Southwest
Deal found 6/15![Southwest logo]()
$332
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.
Mon 9/144:04 pm
IDA
- DEN
Nonstop1h 54m
United Airlines
Wed 9/161:39 pm
DEN
- IDA
Nonstop1h 44m
United Airlines
Deal found 6/15![United Airlines logo]()
$337
This Delta deal was found by Cheapflights users on 6/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/185:20 pm
GEG
- COS
1 stop4h 34m
Delta
Tue 9/226:14 pm
COS
- GEG
1 stop6h 43m
Delta
Deal found 6/12![Delta logo]()
$362
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 8/207:03 am
GEG
- DEN
1 stop11h 23m
Alaska Airlines
Mon 8/247:08 pm
DEN
- GEG
1 stop5h 03m
Alaska Airlines
Deal found 6/15![Alaska Airlines logo]()
$374
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:15 am
GEG
- DEN
1 stop5h 45m
Southwest
Sat 8/81:15 pm
DEN
- GEG
Nonstop2h 20m
Southwest
Deal found 6/11![Southwest logo]()
$344
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 8/252:44 pm
BOI
- COS
1 stop5h 10m
United Airlines
Wed 8/265:30 am
COS
- BOI
1 stop4h 05m
United Airlines
Deal found 6/15![United Airlines logo]()
$345
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.
Fri 8/77:00 pm
IDA
- DEN
1 stop3h 55m
Delta
Sat 8/83:56 pm
DEN
- IDA
1 stop6h 36m
Delta
Deal found 6/14![Delta logo]()
$369
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 8/255:00 am
GEG
- GJT
1 stop4h 44m
United Airlines
Sat 8/293:12 pm
GJT
- GEG
1 stop6h 34m
United Airlines
Deal found 6/15![United Airlines logo]()
$351
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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.
Fri 9/116:00 am
GEG
- DEN
1 stop29h 20m
Alaska Airlines
Sun 9/138:06 pm
DEN
- GEG
1 stop28h 47m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$405
Last-minute flights from Idaho to ColoradoDiscover last-minute flight deals from Idaho to Colorado. Data last updated June 16, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Colorado. Data last updated June 16, 2026 and is based on user searches.
This 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/141:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Sun 7/1910:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 6/13![Frontier logo]()
$191
This 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/141:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Tue 7/2110:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 6/13![Frontier logo]()
$196
This 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/141:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Thu 7/2310:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 6/13![Frontier logo]()
$211
This Expedia deal was found by Cheapflights users on 6/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/161:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Tue 7/2110:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 6/12![Frontier logo]()
$208
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2010:47 pm
IDA
- DEN
1 stop10h 18m
Multiple Airlines
Mon 7/2710:00 am
DEN
- IDA
1 stop6h 00m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$260
This Frontier deal was found by Cheapflights users on 6/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/211:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Tue 7/2810:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 6/12![Frontier logo]()
$182
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/211:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Wed 7/299:08 pm
DEN
- BOI
1 stop12h 32m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$195
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/211:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Tue 7/288:40 am
DEN
- BOI
1 stop6h 46m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$226
This Frontier deal was found by Cheapflights users on 6/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/231:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Sun 7/2610:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 6/12![Frontier logo]()
$218
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/281:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Thu 7/309:08 pm
DEN
- BOI
1 stop12h 32m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$221
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/301:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Tue 8/410:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 6/16![Frontier logo]()
$181
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/301:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Thu 8/610:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 6/14![Frontier logo]()
$200
One-way flights from Idaho to ColoradoSearch for one-way flight options from Idaho to Colorado. Find affordable one-way fares based on user searches. Data last updated June 16, 2026.
Search for one-way flight options from Idaho to Colorado. Find affordable one-way fares based on user searches. Data last updated June 16, 2026.
This Frontier deal was found by Cheapflights users on 6/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/111:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 6/11![Frontier logo]()
$51
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/81:04 pm
BOI
- DEN
Nonstop2h 05m
Frontier
Deal found 6/13![Frontier logo]()
$60
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/271:04 pm
BOI
- DEN
Nonstop2h 05m
Frontier
Deal found 6/12![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/61:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 6/12![Frontier logo]()
$79
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 6/16![Frontier logo]()
$95
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/125:00 am
BOI
- DEN
Nonstop2h 10m
United Airlines
Deal found 6/11![United Airlines logo]()
$96
This Frontier deal was found by Cheapflights users on 6/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/301:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 6/12![Frontier logo]()
$104
This Delta deal was found by Cheapflights users on 6/11. 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.
Wed 8/511:12 am
BOI
- DEN
1 stop3h 50m
Delta
Deal found 6/11![Delta logo]()
$105
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/122:20 pm
BOI
- DEN
2 stops7h 00m
Southwest
Deal found 6/11![Southwest logo]()
$111
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.
Wed 12/96:00 am
BOI
- DEN
1 stop5h 55m
Alaska Airlines
Deal found 6/15![Alaska Airlines logo]()
$113
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/1310:47 pm
IDA
- DEN
1 stop10h 18m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
Sun 8/99:14 pm
GEG
- DEN
1 stop29h 36m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$120
Find flight deals from Idaho to Colorado
Keep the following information in mind while searching for Idaho to Colorado flight deals. Data was last updated June 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $172 (Frontier) |
One-way from | $51 (Frontier) |
Popular in | April |
Cheapest in | October |
Average price | $317 |
Good round-trip deal | $366 or less |
Good one-way deal | $186 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho to Colorado 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 16, 2026.
Use the filters below to find and compare flights from Idaho to Colorado that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Wed 9/16
11:10 am-4:53 pm
1 stop5h 43m
Denver Intl
Sat 9/19
1:00 pm-6:43 pm
1 stop5h 43m
$229
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Wed 9/16
6:00 am-9:36 am
1 stop3h 36m
Denver Intl
Tue 9/22
1:00 pm-5:50 pm
1 stop4h 50m
$265
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Tue 9/15
7:20 am-7:26 pm
1 stop12h 06m
Denver Intl
Thu 9/17
6:17 am-2:02 pm
1 stop7h 45m
$277
SpokaneColorado Springs
GEG - COS
GEGCOS
Spokane
Mon 9/28
5:20 pm-10:54 pm
1 stop4h 34m
Colorado Springs
Wed 9/30
6:14 pm-11:57 pm
1 stop6h 43m
$283
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Fri 7/17
12:20 pm-8:30 pm
1 stop8h 10m
Denver Intl
Tue 7/21
6:00 am-10:45 am
1 stop4h 45m
$291
BoiseColorado Springs
BOI - COS
BOICOS
Boise Air Term. Gowen Fld
Thu 7/16
5:55 pm-1:25 am
1 stop7h 30m
Colorado Springs
Tue 7/21
7:55 pm-12:35 am
1 stop4h 40m
$291
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Wed 9/30
8:25 am-12:05 pm
1 stop3h 40m
Denver Intl
Fri 10/2
5:30 am-10:01 am
1 stop4h 31m
$291
BoiseColorado Springs
BOI - COS
BOICOS
Boise Air Term. Gowen Fld
Tue 7/21
6:00 am-10:35 am
1 stop4h 35m
Colorado Springs
Fri 7/24
7:55 pm-1:15 am
1 stop5h 20m
$300
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Fri 8/7
2:55 pm-4:45 pm
Nonstop1h 50m
Denver Intl
Mon 8/10
4:10 pm-10:50 pm
2 stops6h 40m
$303
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Thu 9/3
6:49 pm-12:20 pm
1 stop17h 31m
Denver Intl
Sun 9/6
6:17 am-2:02 pm
1 stop7h 45m
$307
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Idaho to Colorado
Have a flexible travel schedule? Discover the best time to fly to Colorado from Idaho with our price prediction graph.
BOI-DEN
IDA-DEN
BOI-COS
GEG-DRO
GEG-COS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Idaho to Colorado
USID-USCO
BOI-DEN
IDA-DEN
BOI-COS
GEG-DRO
What is the cheapest month to book a flight from Idaho to Colorado?
Currently, January is the cheapest month in which you can book a flight from Idaho to Colorado (average of $26). Flying from Idaho to Colorado in June is currently the most expensive (average of $107). 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 ID to CO?
Find hourly flight availability from Idaho to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 16, 2026.
When flying from Idaho to Colorado, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 45% versus a flight in the morning.
Weekly flight availability from Idaho to Colorado
Explore weekly flight availability from Idaho to Colorado. 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 June 16, 2026.
The most flights from USID to USCO are scheduled on a Friday (19 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (13 on average).
How much does it cost to fly round-trip from Idaho to Colorado?
How far ahead should I book a flight from Idaho to Colorado?
The best time to book flights from Idaho to Colorado is 62 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Colorado
Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated June 16, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Idaho to Colorado have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Entertainment
7.5
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 Idaho to Colorado. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Idaho to Colorado
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Colorado by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Idaho to Colorado by cabin class
Find flights from Idaho to Colorado, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Idaho and Colorado flights
Browse other Idaho and Colorado flight options. Last updated on June 16, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Colorado
Find the right flight back to Idaho after your stay in Colorado
Idaho to Colorado flights
Consider these flights traveling from Idaho to Colorado.
Top 5 airlines flying from Idaho to Colorado
Discover the top 5 airlines that operate flights from Idaho to Colorado. 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 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$43 | Average$84 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$54 | Average$135 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$104 | Average$330 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$181 | Average$387 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$189 | Average$412 | FlexibilityNo cancel fee | On-time63% |