$40+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
Apr 16 — Apr 231
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to Colorado with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Idaho to 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 March 17, 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 March 17, 2026.
This Frontier deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/912:03 pm
BOI
- DEN
Nonstop2h 03m
Frontier
Thu 4/169:10 am
DEN
- BOI
Nonstop1h 58m
Frontier
Deal found 3/17![Frontier logo]()
$80
This Expedia deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/212:03 pm
BOI
- DEN
Nonstop2h 03m
Frontier
Sun 4/59:10 am
DEN
- BOI
Nonstop1h 58m
Frontier
Deal found 3/17![Frontier logo]()
$114
This Frontier deal was found by Cheapflights users on 3/12. 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 5/211:25 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Sun 5/2410:25 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 3/12![Frontier logo]()
$133
This Frontier deal was found by Cheapflights users on 3/12. 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 4/1611:53 am
BOI
- DEN
Nonstop2h 03m
Frontier
Sun 4/199:10 am
DEN
- BOI
Nonstop1h 58m
Frontier
Deal found 3/12![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 3/13. 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.
Sun 4/512:03 pm
BOI
- DEN
Nonstop2h 03m
Frontier
Thu 4/99:10 am
DEN
- BOI
Nonstop1h 58m
Frontier
Deal found 3/13![Frontier logo]()
$143
This Expedia deal was found by Cheapflights users on 3/15. 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.
Thu 4/212:03 pm
BOI
- DEN
Nonstop2h 03m
Multiple Airlines
Tue 4/77:00 am
DEN
- BOI
1 stop5h 19m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/71:22 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Sun 5/1010:22 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 3/15![Frontier logo]()
$173
This Frontier deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2311:44 am
GEG
- DEN
Nonstop2h 14m
Frontier
Thu 4/309:28 am
DEN
- GEG
Nonstop2h 21m
Frontier
Deal found 3/17![Frontier logo]()
$188
This Frontier deal was found by Cheapflights users on 3/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2712:33 pm
GEG
- DEN
Nonstop2h 26m
Frontier
Tue 6/99:10 am
DEN
- GEG
Nonstop2h 25m
Frontier
Deal found 3/14![Frontier logo]()
$203
This Delta deal was found by Cheapflights users on 3/12. 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 5/13:30 pm
GEG
- DEN
1 stop7h 20m
Delta
Mon 5/41:20 pm
DEN
- GEG
1 stop6h 37m
Delta
Deal found 3/12![Delta logo]()
$205
This Expedia deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/105:11 pm
GEG
- DEN
1 stop6h 09m
Multiple Airlines
Sat 4/186:20 pm
DEN
- GEG
1 stop6h 39m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$212
This Expedia deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:00 am
GEG
- DEN
1 stop4h 54m
Multiple Airlines
Thu 4/309:28 am
DEN
- GEG
Nonstop2h 21m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$213
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 March 17, 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 March 17, 2026.
This United Airlines deal was found by Cheapflights users on 3/13. 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.
Sun 4/52:30 pm
IDA
- DEN
Nonstop1h 47m
United Airlines
Sat 4/112:30 pm
DEN
- IDA
Nonstop1h 44m
United Airlines
Deal found 3/13![United Airlines logo]()
$229
This Delta deal was found by Cheapflights users on 3/12. 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.
Tue 5/125:00 am
GEG
- DEN
2 stops8h 58m
Delta
Sat 5/166:05 am
DEN
- GEG
1 stop7h 08m
Delta
Deal found 3/12![Delta logo]()
$250
This American Airlines deal was found by Cheapflights users on 3/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/63:15 pm
GEG
- GJT
1 stop6h 27m
American Airlines
Sat 5/96:55 pm
GJT
- GEG
1 stop5h 14m
American Airlines
Deal found 3/15![American Airlines logo]()
$251
This Southwest deal was found by Cheapflights users on 3/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/81:05 pm
BOI
- DEN
1 stop9h 55m
Southwest
Wed 4/151:45 pm
DEN
- BOI
2 stops9h 35m
Southwest
Deal found 3/12![Southwest logo]()
$258
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Sun 4/195:00 am
GEG
- DEN
1 stop17h 56m
Alaska Airlines
Thu 4/236:00 am
DEN
- GEG
1 stop5h 38m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/129:49 am
IDA
- COS
1 stop8h 07m
Multiple Airlines
Sun 4/196:46 pm
COS
- IDA
2 stops20h 41m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$433
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Fri 5/15:26 pm
IDA
- DEN
Nonstop1h 55m
United Airlines
Sun 5/38:10 am
DEN
- IDA
Nonstop1h 45m
United Airlines
Deal found 3/12![United Airlines logo]()
$244
This Delta deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:00 am
GEG
- DEN
2 stops8h 58m
Delta
Sat 5/161:08 pm
DEN
- GEG
1 stop4h 49m
Delta
Deal found 3/15![Delta logo]()
$250
This Alaska Airlines deal was found by Cheapflights users on 3/15. 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 4/96:32 am
BOI
- DEN
1 stop5h 48m
Alaska Airlines
Wed 4/157:25 am
DEN
- BOI
2 stops15h 27m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$288
This Southwest deal was found by Cheapflights users on 3/14. 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 6/104:05 pm
BOI
- DEN
Nonstop2h 00m
Southwest
Thu 6/118:55 pm
DEN
- BOI
Nonstop2h 00m
Southwest
Deal found 3/14![Southwest logo]()
$294
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Tue 4/216:00 am
GEG
- DEN
2 stops16h 44m
Alaska Airlines
Fri 4/246:00 am
DEN
- GEG
1 stop18h 11m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$290
This Delta deal was found by Cheapflights users on 3/12. 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.
Sun 5/105:00 am
GEG
- DEN
1 stop5h 49m
Delta
Wed 5/136:19 pm
DEN
- GEG
2 stops6h 40m
Delta
Deal found 3/12![Delta logo]()
$290
This United Airlines deal was found by Cheapflights users on 3/13. 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 5/235:46 pm
BOI
- DEN
Nonstop1h 59m
United Airlines
Tue 5/263:55 pm
DEN
- BOI
Nonstop2h 01m
United Airlines
Deal found 3/13![United Airlines logo]()
$291
This Southwest deal was found by Cheapflights users on 3/14. 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 4/297:05 am
BOI
- COS
2 stops9h 05m
Southwest
Thu 5/142:15 pm
COS
- BOI
1 stop7h 35m
Southwest
Deal found 3/14![Southwest logo]()
$302
This Delta deal was found by Cheapflights users on 3/14. 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 5/156:00 pm
BOI
- DEN
1 stop5h 52m
Delta
Mon 5/185:30 am
DEN
- BOI
1 stop4h 02m
Delta
Deal found 3/14![Delta logo]()
$298
This Alaska Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:20 am
BOI
- DEN
2 stops10h 04m
Alaska Airlines
Thu 4/236:00 am
DEN
- BOI
1 stop6h 35m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$302
This Southwest deal was found by Cheapflights users on 3/13. 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 6/57:40 pm
BOI
- COS
1 stop5h 35m
Southwest
Thu 6/119:05 pm
COS
- BOI
1 stop4h 40m
Southwest
Deal found 3/13![Southwest logo]()
$307
This United Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/145:20 pm
IDA
- DEN
Nonstop1h 50m
United Airlines
Tue 4/218:10 am
DEN
- IDA
Nonstop1h 43m
United Airlines
Deal found 3/16![United Airlines logo]()
$315
This American Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:00 am
GEG
- GJT
1 stop9h 27m
American Airlines
Sat 5/166:55 pm
GJT
- GEG
1 stop5h 14m
American Airlines
Deal found 3/14![American Airlines logo]()
$391
This Delta deal was found by Cheapflights users on 3/14. 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 9/43:04 pm
IDA
- DEN
1 stop4h 06m
Delta
Sun 9/63:40 pm
DEN
- IDA
1 stop6h 34m
Delta
Deal found 3/14![Delta logo]()
$314
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/212:15 pm
BOI
- DEN
1 stop8h 05m
Southwest
Mon 5/255:25 pm
DEN
- BOI
1 stop7h 20m
Southwest
Deal found 3/16![Southwest logo]()
$317
This United Airlines deal was found by Cheapflights users on 3/14. 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.
Fri 6/56:30 am
BOI
- DEN
Nonstop1h 59m
United Airlines
Sun 6/77:45 am
DEN
- BOI
Nonstop2h 00m
United Airlines
Deal found 3/14![United Airlines logo]()
$317
This Alaska Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3012:00 pm
SUN
- DEN
1 stop11h 56m
Alaska Airlines
Fri 4/37:24 pm
DEN
- SUN
1 stop15h 54m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 3/12. 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 5/296:00 pm
BOI
- DEN
1 stop5h 52m
Delta
Sun 5/315:40 am
DEN
- BOI
1 stop3h 52m
Delta
Deal found 3/12![Delta logo]()
$317
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Sat 4/115:29 pm
BOI
- DEN
Nonstop2h 11m
United Airlines
Sat 4/187:45 am
DEN
- BOI
Nonstop2h 09m
United Airlines
Deal found 3/12![United Airlines logo]()
$321
This Southwest deal was found by Cheapflights users on 3/15. 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.
Sun 4/123:25 pm
BOI
- COS
1 stop8h 25m
Southwest
Sun 4/196:20 am
COS
- BOI
1 stop4h 05m
Southwest
Deal found 3/15![Southwest logo]()
$322
This Alaska Airlines deal was found by Cheapflights users on 3/14. 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.
Sat 4/116:20 am
GEG
- DEN
2 stops16h 36m
Alaska Airlines
Sat 4/186:20 pm
DEN
- GEG
1 stop6h 39m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$348
This Delta deal was found by Cheapflights users on 3/13. 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.
Mon 6/155:45 pm
BOI
- COS
1 stop4h 44m
Delta
Sat 6/205:55 pm
COS
- BOI
1 stop5h 16m
Delta
Deal found 3/13![Delta logo]()
$317
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Fri 5/85:00 am
GEG
- GJT
1 stop4h 43m
United Airlines
Tue 5/127:00 am
GJT
- GEG
1 stop6h 39m
United Airlines
Deal found 3/12![United Airlines logo]()
$322
This Southwest deal was found by Cheapflights users on 3/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/275:40 pm
BOI
- COS
1 stop6h 10m
Southwest
Mon 5/45:20 pm
COS
- BOI
2 stops7h 40m
Southwest
Deal found 3/12![Southwest logo]()
$326
Last-minute flights from Idaho to ColoradoDiscover last-minute flight deals from Idaho to Colorado. Data last updated March 17, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Colorado. Data last updated March 17, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/212:03 pm
BOI
- DEN
Nonstop2h 03m
Frontier
Sun 4/59:10 am
DEN
- BOI
Nonstop1h 58m
Frontier
Deal found 3/17![Frontier logo]()
$114
This Expedia deal was found by Cheapflights users on 3/15. 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.
Thu 4/212:03 pm
BOI
- DEN
Nonstop2h 03m
Multiple Airlines
Tue 4/77:00 am
DEN
- BOI
1 stop5h 19m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 3/13. 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.
Sun 4/512:03 pm
BOI
- DEN
Nonstop2h 03m
Frontier
Thu 4/99:10 am
DEN
- BOI
Nonstop1h 58m
Frontier
Deal found 3/13![Frontier logo]()
$143
This Frontier deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/912:03 pm
BOI
- DEN
Nonstop2h 03m
Frontier
Thu 4/169:10 am
DEN
- BOI
Nonstop1h 58m
Frontier
Deal found 3/17![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/912:03 pm
BOI
- DEN
Nonstop2h 03m
Multiple Airlines
Wed 4/157:00 am
DEN
- BOI
1 stop8h 29m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$175
This Expedia deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/105:11 pm
GEG
- DEN
1 stop6h 09m
Multiple Airlines
Sat 4/186:20 pm
DEN
- GEG
1 stop6h 39m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 3/13. 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.
Sun 4/1212:03 pm
BOI
- DEN
Nonstop2h 03m
Frontier
Sun 4/199:10 am
DEN
- BOI
Nonstop1h 58m
Frontier
Deal found 3/13![Frontier logo]()
$186
This Frontier deal was found by Cheapflights users on 3/12. 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 4/1611:53 am
BOI
- DEN
Nonstop2h 03m
Frontier
Sun 4/199:10 am
DEN
- BOI
Nonstop1h 58m
Frontier
Deal found 3/12![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:53 am
BOI
- DEN
Nonstop2h 03m
Multiple Airlines
Tue 4/217:00 am
DEN
- BOI
1 stop5h 22m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$176
This Frontier deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2311:44 am
GEG
- DEN
Nonstop2h 14m
Frontier
Thu 4/309:28 am
DEN
- GEG
Nonstop2h 21m
Frontier
Deal found 3/17![Frontier logo]()
$188
This Expedia deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:00 am
GEG
- DEN
1 stop4h 54m
Multiple Airlines
Thu 4/309:28 am
DEN
- GEG
Nonstop2h 21m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$213
This Vliegwinkel deal was found by Cheapflights users on 3/15. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:00 am
GEG
- DEN
1 stop4h 54m
Multiple Airlines
Wed 5/610:12 am
DEN
- GEG
Nonstop2h 26m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$214
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 March 17, 2026.
Search for one-way flight options from Idaho to Colorado. Find affordable one-way fares based on user searches. Data last updated March 17, 2026.
This Frontier deal was found by Cheapflights users on 3/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/912:03 pm
BOI
- DEN
Nonstop2h 03m
Frontier
Deal found 3/13![Frontier logo]()
$40
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/212:03 pm
BOI
- DEN
Nonstop2h 03m
Frontier
Deal found 3/15![Frontier logo]()
$49
This Expedia deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:53 am
BOI
- DEN
Nonstop2h 03m
Frontier
Deal found 3/16![Frontier logo]()
$50
This Kiwi.com deal was found by Cheapflights users on 3/13. 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.
Sun 5/241:25 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Deal found 3/13![Frontier logo]()
$58
This Expedia deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/281:25 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Deal found 3/16![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 5/211:25 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Deal found 3/12![Frontier logo]()
$73
This Frontier deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/141:22 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Deal found 3/17![Frontier logo]()
$74
This Frontier deal was found by Cheapflights users on 3/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/121:22 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Deal found 3/14![Frontier logo]()
$81
This Frontier deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/171:22 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Deal found 3/17![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/105:11 pm
GEG
- DEN
1 stop6h 09m
Frontier
Deal found 3/16![Frontier logo]()
$89
This Frontier deal was found by Cheapflights users on 3/16. 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.
Mon 4/135:11 pm
GEG
- DEN
1 stop6h 09m
Frontier
Deal found 3/16![Frontier logo]()
$90
This Expedia deal was found by Cheapflights users on 3/12. 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.
Wed 5/612:33 pm
GEG
- DEN
Nonstop2h 26m
Frontier
Deal found 3/12![Frontier logo]()
$94
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 March 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $99 (Kiwi.com) |
One-way from | $40 (Frontier) |
Popular in | April |
Cheapest in | October |
Average price | $284 |
Good round-trip deal | $364 or less |
Good one-way deal | $175 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 March 17, 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
Quickest round-trip
Idaho FallsDenver
IDA - DEN
IDADEN
Idaho Falls Fanning Field
Sun 4/5
2:30 pm-4:17 pm
Nonstop1h 47m
Denver Intl
Sat 4/11
2:30 pm-4:14 pm
Nonstop1h 44m
$229
Idaho FallsDenver
IDA - DEN
IDADEN
Idaho Falls Fanning Field
Fri 5/1
5:26 pm-7:21 pm
Nonstop1h 55m
Denver Intl
Sun 5/3
8:10 am-9:55 am
Nonstop1h 45m
$244
SpokaneDenver
GEG - DEN
GEGDEN
Spokane
Tue 5/12
5:00 am-2:58 pm
2 stops8h 58m
Denver Intl
Sat 5/16
6:05 am-12:13 pm
1 stop7h 08m
$250
SpokaneDenver
GEG - DEN
GEGDEN
Spokane
Sat 5/9
5:00 am-2:58 pm
2 stops8h 58m
Denver Intl
Sat 5/16
1:08 pm-4:57 pm
1 stop4h 49m
$250
SpokaneGrand Junction
GEG - GJT
GEGGJT
Spokane
Wed 5/6
3:15 pm-10:42 pm
1 stop6h 27m
Grand Junction Regnl
Sat 5/9
6:55 pm-11:09 pm
1 stop5h 14m
$251
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Wed 4/8
1:05 pm-11:00 pm
1 stop9h 55m
Denver Intl
Wed 4/15
1:45 pm-11:20 pm
2 stops9h 35m
$258
SpokaneDenver
GEG - DEN
GEGDEN
Spokane
Sun 4/19
5:00 am-11:56 pm
1 stop17h 56m
Denver Intl
Thu 4/23
6:00 am-10:38 am
1 stop5h 38m
$268
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Thu 4/9
6:32 am-12:20 pm
1 stop5h 48m
Denver Intl
Wed 4/15
7:25 am-10:52 pm
2 stops15h 27m
$288
SpokaneDenver
GEG - DEN
GEGDEN
Spokane
Tue 4/21
6:00 am-11:44 pm
2 stops16h 44m
Denver Intl
Fri 4/24
6:00 am-11:11 pm
1 stop18h 11m
$290
SpokaneDenver
GEG - DEN
GEGDEN
Spokane
Sun 5/10
5:00 am-11:49 am
1 stop5h 49m
Denver Intl
Wed 5/13
6:19 pm-11:59 pm
2 stops6h 40m
$290
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
GEG-DEN
IDA-DEN
GEG-COS
GEG-GJT
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
GEG-DEN
IDA-DEN
GEG-COS
What is the cheapest month to book a flight from Idaho to Colorado?
Currently, February is the cheapest month in which you can book a flight from Idaho to Colorado (average of $56). Flying from Idaho to Colorado in April is currently the most expensive (average of $189). 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 March 17, 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 March 17, 2026.
The most flights from USID to USCO are scheduled on a Monday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 on average).
How much does it cost to fly round-trip from Idaho to Colorado?
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 March 17, 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
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
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.
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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 March 17, 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 6 airlines flying from Idaho to Colorado
Discover the top 6 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 March 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$43 | Average$84 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$52 | Average$123 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$111 | Average$319 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$154 | Average$342 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$163 | Average$381 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$189 | Average$408 | FlexibilityNo cancel fee | On-time63% |