$57+ 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 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
May 28 — Jun 41
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 April 28, 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 April 28, 2026.
This Frontier deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 6/2412:28 pm
GEG
- DEN
Nonstop2h 35m
Frontier
Mon 6/2910:08 am
DEN
- GEG
Nonstop2h 25m
Frontier
Deal found 4/23![Frontier logo]()
$158
This Frontier deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/41:33 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Sun 6/710:33 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 4/26![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 6/111:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Sun 6/1410:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Deal found 4/23![Frontier logo]()
$167
This Frontier deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/181:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Sun 6/2110:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Deal found 4/27![Frontier logo]()
$168
This Expedia deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:07 pm
BOI
- DEN
1 stop5h 52m
Multiple Airlines
Tue 6/910:29 am
DEN
- BOI
Nonstop2h 01m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$169
This Expedia deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 6/66:07 pm
BOI
- DEN
1 stop5h 52m
Multiple Airlines
Tue 6/910:29 am
DEN
- BOI
Nonstop2h 01m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 6/2412:28 pm
GEG
- DEN
Nonstop2h 35m
Frontier
Fri 6/2610:08 am
DEN
- GEG
Nonstop2h 25m
Frontier
Deal found 4/23![Frontier logo]()
$170
This Frontier deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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
Thu 5/2810:25 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 4/22![Frontier logo]()
$173
This Orbitz deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/194:28 pm
BOI
- DEN
1 stop5h 09m
Multiple Airlines
Tue 5/2610:25 am
DEN
- BOI
Nonstop2h 05m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 7/161:25 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Tue 7/2110:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 4/23![Frontier logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 6/34:19 pm
BOI
- DEN
1 stop5h 32m
Multiple Airlines
Tue 6/910:29 am
DEN
- BOI
Nonstop2h 01m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 5/141:22 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Sun 5/1710:22 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 4/23![Frontier logo]()
$185
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 April 28, 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 April 28, 2026.
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 5/275:45 am
BOI
- DEN
1 stop6h 09m
Delta
Sat 5/305:30 am
DEN
- BOI
1 stop4h 02m
Delta
Deal found 4/23![Delta logo]()
$237
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/302:30 pm
IDA
- DEN
Nonstop1h 48m
United Airlines
Sat 6/68:05 am
DEN
- IDA
Nonstop1h 45m
United Airlines
Deal found 4/26![United Airlines logo]()
$249
This Alaska Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:01 am
GEG
- DEN
1 stop11h 10m
Alaska Airlines
Sat 5/306:40 am
DEN
- GEG
1 stop16h 05m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$302
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/44:25 pm
BOI
- DEN
Nonstop1h 55m
Southwest
Sun 6/79:00 pm
DEN
- BOI
1 stop4h 20m
Southwest
Deal found 4/25![Southwest logo]()
$304
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 8/145:45 pm
BOI
- COS
1 stop4h 44m
Delta
Mon 8/175:55 pm
COS
- BOI
1 stop6h 01m
Delta
Deal found 4/23![Delta logo]()
$269
This American Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 10/23:50 pm
GEG
- GJT
1 stop7h 26m
American Airlines
Sun 10/47:16 pm
GJT
- GEG
1 stop4h 46m
American Airlines
Deal found 4/23![American Airlines logo]()
$557
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/252:30 pm
IDA
- DEN
Nonstop1h 48m
United Airlines
Mon 6/11:50 pm
DEN
- IDA
Nonstop1h 44m
United Airlines
Deal found 4/27![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/34:59 pm
GEG
- GJT
1 stop4h 01m
Delta
Mon 6/86:50 pm
GJT
- GEG
1 stop6h 09m
Delta
Deal found 4/27![Delta logo]()
$271
This Southwest deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 7/173:25 pm
BOI
- DEN
1 stop7h 40m
Southwest
Mon 7/208:55 pm
DEN
- BOI
Nonstop2h 00m
Southwest
Deal found 4/23![Southwest logo]()
$327
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/204:59 pm
GEG
- GJT
1 stop4h 01m
Delta
Sun 5/247:40 am
GJT
- GEG
1 stop5h 21m
Delta
Deal found 4/26![Delta logo]()
$271
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/124:10 pm
GEG
- GJT
1 stop5h 08m
United Airlines
Sat 5/169:31 am
GJT
- GEG
1 stop6h 47m
United Airlines
Deal found 4/27![United Airlines logo]()
$299
This Alaska Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/161:31 pm
BOI
- DEN
1 stop8h 06m
Alaska Airlines
Wed 5/206:00 am
DEN
- BOI
1 stop8h 10m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$331
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:35 pm
GEG
- COS
1 stop5h 00m
Southwest
Fri 8/2111:20 am
COS
- GEG
1 stop6h 35m
Southwest
Deal found 4/22![Southwest logo]()
$329
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/274:08 pm
GEG
- GJT
1 stop5h 03m
United Airlines
Wed 6/247:00 am
GJT
- GEG
1 stop6h 37m
United Airlines
Deal found 4/25![United Airlines logo]()
$310
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 5/94:57 pm
GEG
- GJT
1 stop4h 03m
Delta
Wed 5/137:40 am
GJT
- GEG
1 stop5h 21m
Delta
Deal found 4/23![Delta logo]()
$295
This Alaska Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/53:16 pm
GEG
- DEN
1 stop5h 24m
Alaska Airlines
Sat 8/87:05 pm
DEN
- GEG
1 stop4h 54m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$357
This Southwest deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:00 pm
BOI
- DEN
1 stop6h 05m
Southwest
Fri 5/299:50 am
DEN
- BOI
2 stops8h 30m
Southwest
Deal found 4/26![Southwest logo]()
$336
This United Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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
BOI
- DEN
Nonstop2h 05m
United Airlines
Mon 5/117:15 pm
DEN
- BOI
Nonstop2h 02m
United Airlines
Deal found 4/22![United Airlines logo]()
$318
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 5/316:00 am
BOI
- DEN
1 stop3h 22m
Delta
Sat 6/65:30 am
DEN
- BOI
1 stop6h 41m
Delta
Deal found 4/23![Delta logo]()
$301
This Alaska Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3012:36 pm
GEG
- DEN
2 stops10h 23m
Alaska Airlines
Wed 6/37:51 pm
DEN
- GEG
1 stop26h 54m
Alaska Airlines
Deal found 4/25![Alaska Airlines logo]()
$366
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:55 pm
BOI
- DEN
1 stop4h 30m
Southwest
Mon 6/15:25 pm
DEN
- BOI
1 stop7h 20m
Southwest
Deal found 4/27![Southwest logo]()
$354
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/172:30 pm
IDA
- DEN
Nonstop1h 48m
United Airlines
Mon 7/208:05 am
DEN
- IDA
Nonstop1h 45m
United Airlines
Deal found 4/27![United Airlines logo]()
$334
This United Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/134:00 pm
GEG
- DEN
Nonstop2h 21m
United Airlines
Sat 8/151:37 pm
DEN
- GEG
Nonstop2h 21m
United Airlines
Deal found 4/23![United Airlines logo]()
$335
This Southwest deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” 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 5/307:05 am
BOI
- MTJ
2 stops11h 45m
Southwest
Thu 6/48:00 am
MTJ
- BOI
2 stops7h 45m
Southwest
Deal found 4/24![Southwest logo]()
$369
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:07 pm
BOI
- DEN
1 stop5h 37m
Delta
Sun 7/126:30 am
DEN
- BOI
1 stop5h 08m
Delta
Deal found 4/27![Delta logo]()
$337
This Alaska Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” 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 5/147:01 am
GEG
- DEN
1 stop11h 10m
Alaska Airlines
Tue 5/192:19 pm
DEN
- GEG
1 stop8h 26m
Alaska Airlines
Deal found 4/24![Alaska Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/124:00 pm
BOI
- DEN
1 stop7h 59m
Delta
Thu 6/1812:45 pm
DEN
- BOI
1 stop5h 07m
Delta
Deal found 4/27![Delta logo]()
$337
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/144:10 pm
IDA
- DEN
Nonstop1h 54m
United Airlines
Wed 9/1611:45 am
DEN
- IDA
Nonstop1h 39m
United Airlines
Deal found 4/28![United Airlines logo]()
$337
This Southwest deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/197:40 pm
BOI
- COS
1 stop5h 35m
Southwest
Mon 6/224:55 pm
COS
- BOI
2 stops8h 15m
Southwest
Deal found 4/26![Southwest logo]()
$372
This Alaska Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/234:03 pm
IDA
- DEN
1 stop5h 34m
Alaska Airlines
Sat 5/308:00 am
DEN
- IDA
1 stop5h 17m
Alaska Airlines
Deal found 4/25![Alaska Airlines logo]()
$443
Last-minute flights from Idaho to ColoradoDiscover last-minute flight deals from Idaho to Colorado. Data last updated April 28, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Colorado. Data last updated April 28, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 5/141:22 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Sun 5/1710:22 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 4/23![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 5/171:22 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Thu 5/2110:25 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 4/23![Frontier logo]()
$186
This Orbitz deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/194:28 pm
BOI
- DEN
1 stop5h 09m
Multiple Airlines
Tue 5/2610:25 am
DEN
- BOI
Nonstop2h 05m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$174
This Delta deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” 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 5/196:41 pm
BOI
- DEN
1 stop3h 59m
Delta
Tue 5/267:25 am
DEN
- BOI
1 stop7h 09m
Delta
Deal found 4/24![Delta logo]()
$215
This Frontier deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” 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
Thu 5/2810:25 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 4/22![Frontier logo]()
$173
This Frontier deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 4/27![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Sun 5/3110:25 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 4/26![Frontier logo]()
$211
This Frontier deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/261:25 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Sun 5/3110:25 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 4/26![Frontier logo]()
$190
This Expedia deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/261:25 pm
BOI
- DEN
Nonstop2h 16m
Multiple Airlines
Tue 6/26:00 am
DEN
- BOI
1 stop8h 10m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$203
This Expedia deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:12 pm
BOI
- DEN
1 stop5h 37m
Multiple Airlines
Tue 6/2310:29 am
DEN
- BOI
Nonstop2h 01m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$208
This Frontier deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Fri 5/2910:12 am
DEN
- GEG
Nonstop2h 26m
Frontier
Deal found 4/27![Frontier logo]()
$203
This Frontier deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 5/281:25 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Sun 5/3110:25 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 4/23![Frontier logo]()
$195
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 April 28, 2026.
Search for one-way flight options from Idaho to Colorado. Find affordable one-way fares based on user searches. Data last updated April 28, 2026.
This Priceline deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/261:25 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Deal found 4/27![Frontier logo]()
$57
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 6/1012:28 pm
GEG
- DEN
Nonstop2h 35m
Frontier
Deal found 4/23![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 6/251:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Deal found 4/23![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/141:25 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 4/25![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” 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 6/2912:28 pm
GEG
- DEN
Nonstop2h 35m
Frontier
Deal found 4/24![Frontier logo]()
$83
This Frontier deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 6/211:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Deal found 4/23![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 4/25![Frontier logo]()
$93
This Frontier deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Deal found 4/27![Frontier logo]()
$94
This Priceline deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 5/281:25 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Deal found 4/23![Frontier logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:12 am
GEG
- DEN
1 stop24h 22m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$102
This Frontier deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 5/2512:33 pm
GEG
- DEN
Nonstop2h 26m
Frontier
Deal found 4/23![Frontier logo]()
$103
This Frontier deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2212:34 pm
GEG
- DEN
Nonstop2h 24m
Frontier
Deal found 4/27![Frontier logo]()
$104
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 April 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $158 (Frontier) |
One-way from | $57 (Priceline) |
Popular in | April |
Cheapest in | October |
Average price | $363 |
Good round-trip deal | $372 or less |
Good one-way deal | $181 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 April 28, 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 5/27
5:45 am-11:54 am
1 stop6h 09m
Denver Intl
Sat 5/30
5:30 am-9:32 am
1 stop4h 02m
$237
Idaho FallsDenver
IDA - DEN
IDADEN
Idaho Falls Fanning Field
Sat 5/30
2:30 pm-4:18 pm
Nonstop1h 48m
Denver Intl
Sat 6/6
8:05 am-9:50 am
Nonstop1h 45m
$249
BoiseColorado Springs
BOI - COS
BOICOS
Boise Air Term. Gowen Fld
Fri 8/14
5:45 pm-10:29 pm
1 stop4h 44m
Colorado Springs
Mon 8/17
5:55 pm-11:56 pm
1 stop6h 01m
$269
SpokaneGrand Junction
GEG - GJT
GEGGJT
Spokane
Wed 6/3
4:59 pm-10:00 pm
1 stop4h 01m
Grand Junction Regnl
Mon 6/8
6:50 pm-11:59 pm
1 stop6h 09m
$271
SpokaneGrand Junction
GEG - GJT
GEGGJT
Spokane
Wed 5/20
4:59 pm-10:00 pm
1 stop4h 01m
Grand Junction Regnl
Sun 5/24
7:40 am-12:01 pm
1 stop5h 21m
$271
Quickest round-trip
Idaho FallsDenver
IDA - DEN
IDADEN
Idaho Falls Fanning Field
Mon 5/25
2:30 pm-4:18 pm
Nonstop1h 48m
Denver Intl
Mon 6/1
1:50 pm-3:34 pm
Nonstop1h 44m
$289
SpokaneGrand Junction
GEG - GJT
GEGGJT
Spokane
Sat 5/9
4:57 pm-10:00 pm
1 stop4h 03m
Grand Junction Regnl
Wed 5/13
7:40 am-12:01 pm
1 stop5h 21m
$295
SpokaneGrand Junction
GEG - GJT
GEGGJT
Spokane
Tue 5/12
4:10 pm-10:18 pm
1 stop5h 08m
Grand Junction Regnl
Sat 5/16
9:31 am-3:18 pm
1 stop6h 47m
$299
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Sun 5/31
6:00 am-9:22 am
1 stop3h 22m
Denver Intl
Sat 6/6
5:30 am-12:11 pm
1 stop6h 41m
$301
SpokaneDenver
GEG - DEN
GEGDEN
Spokane
Wed 5/27
7:01 am-7:11 pm
1 stop11h 10m
Denver Intl
Sat 5/30
6:40 am-9:45 pm
1 stop16h 05m
$302
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
BOI-MTJ
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
BOI-MTJ
How far ahead should I book a flight from Idaho to Colorado?
The best time to book flights from Idaho to Colorado is 52 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.
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 November is currently the most expensive (average of $75). 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 April 28, 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 April 28, 2026.
The most flights from USID to USCO are scheduled on a Sunday (17 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (8 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 April 28, 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.
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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 April 28, 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 April 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$43 | Average$84 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$52 | Average$127 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$104 | Average$330 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$154 | Average$273 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$165 | Average$367 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$187 | Average$409 | FlexibilityNo cancel fee | On-time63% |