$54+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
Aug 30 — Sep 61
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 July 31, 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 July 31, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:50 pm
BOI
- DEN
1 stop8h 54m
Frontier
Mon 9/147:30 am
DEN
- BOI
1 stop6h 25m
Frontier
Deal found 7/27![Frontier logo]()
$201
This United Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:30 am
BOI
- DEN
Nonstop2h 01m
United Airlines
Mon 9/77:40 am
DEN
- BOI
Nonstop1h 55m
United Airlines
Deal found 7/26![United Airlines logo]()
$202
This Priceline deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/204:28 pm
BOI
- DEN
1 stop5h 18m
Multiple Airlines
Thu 8/279:29 am
DEN
- BOI
Nonstop2h 00m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$203
This Priceline deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Mon 8/248:08 am
DEN
- BOI
1 stop5h 13m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$204
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/223:10 pm
BOI
- DEN
1 stop5h 45m
Southwest
Mon 8/248:40 pm
DEN
- BOI
Nonstop1h 55m
Southwest
Deal found 7/29![Southwest logo]()
$207
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:05 am
BOI
- DEN
2 stops6h 30m
Southwest
Thu 9/32:20 pm
DEN
- BOI
Nonstop1h 55m
Southwest
Deal found 7/30![Southwest logo]()
$208
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/281:32 pm
BOI
- DEN
1 stop5h 00m
Multiple Airlines
Thu 9/39:29 am
DEN
- BOI
Nonstop2h 00m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$209
This Frontier deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Thu 8/209:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 7/30![Frontier logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:52 pm
BOI
- DEN
1 stop12h 00m
Frontier
Wed 10/2810:32 pm
DEN
- BOI
2 stops40h 25m
Frontier
Deal found 7/27![Frontier logo]()
$211
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:30 am
BOI
- DEN
Nonstop1h 50m
Southwest
Tue 8/253:50 pm
DEN
- BOI
2 stops6h 25m
Southwest
Deal found 7/29![Southwest logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Sat 8/228:08 am
DEN
- BOI
1 stop5h 13m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:00 am
BOI
- DEN
1 stop5h 07m
Multiple Airlines
Thu 9/39:29 am
DEN
- BOI
Nonstop2h 00m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$214
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 July 31, 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 July 31, 2026.
This Delta deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:00 am
BOI
- DEN
1 stop3h 14m
Delta
Thu 8/275:35 am
DEN
- BOI
1 stop4h 13m
Delta
Deal found 7/26![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:40 am
BOI
- DEN
2 stops7h 25m
Southwest
Mon 9/76:25 am
DEN
- BOI
1 stop6h 50m
Southwest
Deal found 7/29![Southwest logo]()
$222
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/45:57 pm
IDA
- DEN
Nonstop1h 43m
United Airlines
Mon 12/711:50 am
DEN
- IDA
Nonstop1h 45m
United Airlines
Deal found 7/28![United Airlines logo]()
$259
This Alaska Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/311:32 pm
BOI
- DEN
2 stops10h 24m
Alaska Airlines
Tue 9/18:08 am
DEN
- BOI
1 stop5h 04m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$300
This American Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/308:00 am
SUN
- DEN
1 stop7h 07m
American Airlines
Wed 1/62:11 pm
DEN
- SUN
1 stop6h 06m
American Airlines
Deal found 7/26![American Airlines logo]()
$437
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/249:05 am
BOI
- DEN
2 stops8h 10m
Southwest
Mon 9/284:10 pm
DEN
- BOI
2 stops6h 45m
Southwest
Deal found 7/27![Southwest logo]()
$227
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:40 am
BOI
- DEN
2 stops7h 30m
Southwest
Tue 9/151:55 pm
DEN
- BOI
2 stops8h 25m
Southwest
Deal found 7/29![Southwest logo]()
$227
This Delta deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:00 am
BOI
- DEN
1 stop5h 47m
Delta
Mon 8/315:35 am
DEN
- BOI
1 stop4h 13m
Delta
Deal found 7/26![Delta logo]()
$272
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:30 am
BOI
- DEN
Nonstop2h 01m
United Airlines
Mon 8/318:32 pm
DEN
- BOI
Nonstop2h 08m
United Airlines
Deal found 7/28![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/46:56 pm
IDA
- DEN
1 stop4h 04m
Delta
Mon 12/76:10 pm
DEN
- IDA
1 stop3h 52m
Delta
Deal found 7/28![Delta logo]()
$279
This Alaska Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:03 am
BOI
- DEN
2 stops13h 10m
Alaska Airlines
Sat 10/312:31 pm
DEN
- BOI
2 stops8h 49m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$313
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:50 pm
BOI
- DEN
Nonstop1h 50m
Southwest
Tue 10/206:35 am
DEN
- BOI
1 stop6h 40m
Southwest
Deal found 7/30![Southwest logo]()
$262
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/132:25 pm
IDA
- DEN
Nonstop1h 50m
United Airlines
Sun 8/1611:50 am
DEN
- IDA
Nonstop1h 39m
United Airlines
Deal found 7/30![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:00 am
IDA
- DEN
1 stop3h 14m
Delta
Sat 8/293:56 pm
DEN
- IDA
1 stop6h 36m
Delta
Deal found 7/27![Delta logo]()
$279
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:00 am
GEG
- DEN
Nonstop2h 22m
United Airlines
Tue 9/1511:15 am
DEN
- GEG
Nonstop2h 20m
United Airlines
Deal found 7/29![United Airlines logo]()
$297
This Alaska Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/224:38 pm
GEG
- DEN
1 stop4h 59m
Alaska Airlines
Sun 10/256:59 pm
DEN
- GEG
1 stop28h 51m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$328
This Southwest deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/271:25 pm
BOI
- DEN
2 stops9h 25m
Southwest
Sun 11/18:35 am
DEN
- BOI
Nonstop2h 05m
Southwest
Deal found 7/26![Southwest logo]()
$277
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/26:45 pm
BOI
- COS
1 stop3h 43m
Delta
Wed 9/98:15 am
COS
- BOI
1 stop4h 01m
Delta
Deal found 7/31![Delta logo]()
$309
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:00 am
GEG
- MTJ
1 stop6h 45m
United Airlines
Wed 9/233:24 pm
MTJ
- GEG
1 stop6h 50m
United Airlines
Deal found 7/28![United Airlines logo]()
$311
This Alaska Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/164:38 pm
GEG
- DEN
1 stop4h 59m
Alaska Airlines
Mon 10/196:59 pm
DEN
- GEG
1 stop27h 41m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$345
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:53 pm
IDA
- DEN
Nonstop1h 52m
United Airlines
Sat 8/151:39 pm
DEN
- IDA
Nonstop1h 44m
United Airlines
Deal found 7/28![United Airlines logo]()
$312
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:00 am
BOI
- COS
1 stop6h 35m
Southwest
Sat 8/297:30 am
COS
- BOI
2 stops8h 00m
Southwest
Deal found 7/29![Southwest logo]()
$314
This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:00 pm
IDA
- COS
1 stop3h 28m
Delta
Mon 8/246:16 pm
COS
- IDA
1 stop4h 16m
Delta
Deal found 7/27![Delta logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/185:21 pm
GEG
- DEN
1 stop4h 58m
Alaska Airlines
Tue 9/227:08 pm
DEN
- GEG
1 stop5h 51m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$352
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:44 pm
BOI
- DEN
Nonstop1h 58m
United Airlines
Sun 11/153:55 pm
DEN
- BOI
Nonstop2h 08m
United Airlines
Deal found 7/30![United Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:05 am
BOI
- COS
2 stops8h 55m
Southwest
Sat 9/57:00 am
COS
- BOI
2 stops7h 30m
Southwest
Deal found 7/29![Southwest logo]()
$319
This Delta deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:14 pm
GEG
- COS
1 stop4h 11m
Delta
Wed 9/306:11 pm
COS
- GEG
1 stop6h 18m
Delta
Deal found 7/26![Delta logo]()
$325
This Alaska Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:24 pm
GEG
- DEN
1 stop14h 28m
Alaska Airlines
Mon 9/211:43 pm
DEN
- GEG
1 stop11h 10m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$371
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:00 am
BOI
- DEN
Nonstop2h 10m
United Airlines
Sun 8/237:40 am
DEN
- BOI
Nonstop1h 55m
United Airlines
Deal found 7/28![United Airlines logo]()
$318
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:00 pm
GEG
- COS
1 stop4h 28m
Delta
Mon 8/316:16 pm
COS
- GEG
1 stop5h 15m
Delta
Deal found 7/29![Delta logo]()
$325
Last-minute flights from Idaho to ColoradoDiscover last-minute flight deals from Idaho to Colorado. Data last updated July 31, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Colorado. Data last updated July 31, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/108:00 pm
BOI
- DEN
1 stop14h 33m
Alaska Airlines
Tue 8/187:05 pm
DEN
- BOI
1 stop4h 43m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$299
This United Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/112:25 pm
IDA
- DEN
Nonstop1h 50m
United Airlines
Sat 8/153:35 pm
DEN
- IDA
Nonstop1h 41m
United Airlines
Deal found 7/26![United Airlines logo]()
$289
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/202:25 pm
IDA
- DEN
Nonstop1h 50m
United Airlines
Mon 8/241:39 pm
DEN
- IDA
Nonstop1h 44m
United Airlines
Deal found 7/27![United Airlines logo]()
$259
This Delta deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:00 pm
IDA
- DEN
1 stop3h 55m
Delta
Wed 8/267:05 am
DEN
- IDA
1 stop3h 45m
Delta
Deal found 7/30![Delta logo]()
$299
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:00 am
GEG
- DEN
Nonstop2h 22m
United Airlines
Tue 8/257:22 pm
DEN
- GEG
Nonstop2h 24m
United Airlines
Deal found 7/28![United Airlines logo]()
$297
This Alaska Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:45 am
GEG
- DEN
1 stop5h 25m
Alaska Airlines
Wed 9/21:43 pm
DEN
- GEG
1 stop10h 06m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$290
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/264:04 pm
IDA
- DEN
Nonstop1h 54m
United Airlines
Mon 8/318:05 am
DEN
- IDA
Nonstop1h 46m
United Airlines
Deal found 7/29![United Airlines logo]()
$294
This Alaska Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 8/267:03 am
GEG
- DEN
1 stop13h 10m
Alaska Airlines
Mon 8/318:22 am
DEN
- GEG
1 stop7h 25m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$301
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/272:25 pm
IDA
- DEN
Nonstop1h 50m
United Airlines
Sat 8/298:05 am
DEN
- IDA
Nonstop1h 46m
United Airlines
Deal found 7/28![United Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 stop10h 29m
Multiple Airlines
Sun 8/3010:48 pm
DEN
- GEG
1 stop12h 57m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$295
This Trip.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/273:05 pm
GEG
- DEN
1 stop5h 41m
Alaska Airlines
Thu 9/37:08 pm
DEN
- GEG
1 stop5h 03m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$300
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:09 pm
IDA
- DEN
1 stop17h 24m
Multiple Airlines
Sun 8/306:45 am
DEN
- IDA
1 stop12h 19m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$245
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 July 31, 2026.
Search for one-way flight options from Idaho to Colorado. Find affordable one-way fares based on user searches. Data last updated July 31, 2026.
This Expedia deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 7/26![Frontier logo]()
$54
This Frontier deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 7/26![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:50 pm
BOI
- DEN
1 stop21h 56m
Frontier
Deal found 7/30![Frontier logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 11/23:52 pm
BOI
- DEN
1 stop21h 57m
Frontier
Deal found 7/31![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/142:50 pm
BOI
- DEN
1 stop21h 56m
Frontier
Deal found 7/31![Frontier logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/293:52 pm
BOI
- DEN
1 stop8h 23m
Frontier
Deal found 7/31![Frontier logo]()
$91
This Expedia deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:50 pm
BOI
- DEN
1 stop19h 17m
Frontier
Deal found 7/30![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1710:54 pm
IDA
- DEN
1 stop19h 06m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$97
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/122:25 pm
BOI
- DEN
Nonstop1h 55m
Southwest
Deal found 7/29![Southwest logo]()
$99
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:55 pm
BOI
- DEN
Nonstop1h 50m
Southwest
Deal found 7/29![Southwest logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3010:12 am
GEG
- DEN
1 stop16h 36m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:28 pm
GEG
- DEN
1 stop7h 24m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$115
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 July 31, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $201 (Kiwi.com) |
One-way from | $54 (Expedia) |
Popular in | April |
Cheapest in | October |
Average price | $321 |
Good round-trip deal | $349 or less |
Good one-way deal | $213 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 July 31, 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 8/26
6:00 am-9:14 am
1 stop3h 14m
Denver Intl
Thu 8/27
5:35 am-9:48 am
1 stop4h 13m
$217
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Sat 9/5
6:40 am-2:05 pm
2 stops7h 25m
Denver Intl
Mon 9/7
6:25 am-1:15 pm
1 stop6h 50m
$222
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Thu 9/24
9:05 am-5:15 pm
2 stops8h 10m
Denver Intl
Mon 9/28
4:10 pm-10:55 pm
2 stops6h 45m
$227
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Wed 9/2
7:40 am-3:10 pm
2 stops7h 30m
Denver Intl
Tue 9/15
1:55 pm-10:20 pm
2 stops8h 25m
$227
Quickest round-trip
Idaho FallsDenver
IDA - DEN
IDADEN
Idaho Falls Fanning Field
Fri 12/4
5:57 pm-7:40 pm
Nonstop1h 43m
Denver Intl
Mon 12/7
11:50 am-1:35 pm
Nonstop1h 45m
$259
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Fri 10/16
3:50 pm-5:40 pm
Nonstop1h 50m
Denver Intl
Tue 10/20
6:35 am-1:15 pm
1 stop6h 40m
$262
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Sat 8/22
6:00 am-11:47 am
1 stop5h 47m
Denver Intl
Mon 8/31
5:35 am-9:48 am
1 stop4h 13m
$272
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Thu 8/27
6:30 am-8:31 am
Nonstop2h 01m
Denver Intl
Mon 8/31
8:32 pm-10:40 pm
Nonstop2h 08m
$277
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Tue 10/27
1:25 pm-10:50 pm
2 stops9h 25m
Denver Intl
Sun 11/1
8:35 am-10:40 am
Nonstop2h 05m
$277
Idaho FallsDenver
IDA - DEN
IDADEN
Idaho Falls Fanning Field
Fri 12/4
6:56 pm-11:00 pm
1 stop4h 04m
Denver Intl
Mon 12/7
6:10 pm-10:02 pm
1 stop3h 52m
$279
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
SUN-DEN
GEG-DEN
BOI-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
SUN-DEN
GEG-DEN
What is the cheapest month to book a flight from Idaho to Colorado?
Currently, October is the cheapest month in which you can book a flight from Idaho to Colorado (average of $229). Flying from Idaho to Colorado in June is currently the most expensive (average of $349). 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 July 31, 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 July 31, 2026.
The most flights from USID to USCO are scheduled on a Thursday (18 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (10 on average).
How much does it cost to fly round-trip from Idaho to Colorado?
Airfare is typical for this route at the moment.
Idaho to Colorado flights typically cost between $167 and $326 in September.The cheapest round-trip price found within the last 5 days was $201 on Frontier (Sep 10-Sep 14).
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 July 31, 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.
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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 July 31, 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 4 airlines flying from Idaho to Colorado
Discover the top 4 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 July 31, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$53 | Average$149 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$104 | Average$365 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$183 | Average$390 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$197 | Average$404 | FlexibilityNo cancel fee | On-time63% |