$67+ Cheap flights from Idaho to Denver (DEN)
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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
May 1 — May 81
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to Denver with Cheapflights
1. Tell us where you want to go
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Cheapest flights from Idaho to DenverExplore the most affordable flight options available from Idaho to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2026.
Explore the most affordable flight options available from Idaho to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/31. 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.
Tue 5/121:22 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Tue 5/2610:25 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 3/31![Frontier logo]()
$133
This Frontier deal was found by Cheapflights users on 3/31. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/41:25 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Tue 6/910:08 am
DEN
- BOI
Nonstop2h 01m
Frontier
Deal found 3/31![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 5/71:22 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Tue 5/1210:22 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 3/29![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 5/211:25 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Tue 5/2610:25 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 3/31![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
Tue 6/21:25 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Tue 6/910:08 am
DEN
- BOI
Nonstop2h 01m
Frontier
Deal found 3/30![Frontier logo]()
$161
This Expedia deal was found by Cheapflights users on 3/30. 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.
Tue 5/51:22 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Thu 5/710:22 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 3/30![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 5/71:22 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Sun 5/1010:22 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 3/31![Frontier logo]()
$173
This Expedia deal was found by Cheapflights users on 3/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/124:38 pm
BOI
- DEN
1 stop5h 11m
Multiple Airlines
Tue 5/2610:25 am
DEN
- BOI
Nonstop2h 05m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 4/135:11 pm
GEG
- DEN
1 stop6h 09m
Frontier
Thu 4/169:28 am
DEN
- GEG
Nonstop2h 21m
Frontier
Deal found 3/30![Frontier logo]()
$182
This Orbitz deal was found by Cheapflights users on 3/30. 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 Orbitz 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 3/30![Frontier logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
Thu 9/31:04 pm
BOI
- DEN
Nonstop2h 05m
Frontier
Sun 9/610:08 am
DEN
- BOI
Nonstop2h 01m
Frontier
Deal found 3/30![Frontier logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 5/41:40 pm
TWF
- DEN
1 stop13h 45m
Multiple Airlines
Thu 5/77:12 am
DEN
- TWF
2 stops28h 48m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$201
Best flights from Idaho to DenverDiscover carefully curated flight deals from Idaho to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 1, 2026.
Discover carefully curated flight deals from Idaho to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 5/41:40 pm
TWF
- DEN
1 stop13h 45m
Multiple Airlines
Thu 5/77:12 am
DEN
- TWF
2 stops28h 48m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$201
This Frontier deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” 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 5/1812:33 pm
GEG
- DEN
Nonstop2h 26m
Frontier
Fri 5/2210:12 am
DEN
- GEG
Nonstop2h 26m
Frontier
Deal found 4/1![Frontier logo]()
$243
This United Airlines deal was found by Cheapflights users on 3/30. 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 5/15:26 pm
IDA
- DEN
Nonstop1h 55m
United Airlines
Sat 5/28:10 am
DEN
- IDA
Nonstop1h 45m
United Airlines
Deal found 3/30![United Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 3/27. 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 4/293:44 pm
BOI
- DEN
1 stop8h 06m
Delta
Mon 5/45:30 am
DEN
- BOI
1 stop4h 23m
Delta
Deal found 3/27![Delta logo]()
$291
This Southwest deal was found by Cheapflights users on 3/27. 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.
Wed 4/297:05 am
BOI
- DEN
2 stops6h 35m
Southwest
Wed 5/64:25 pm
DEN
- BOI
1 stop7h 05m
Southwest
Deal found 3/27![Southwest logo]()
$296
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 5/76:08 pm
BOI
- DEN
1 stop5h 51m
Alaska Airlines
Sun 5/106:00 am
DEN
- BOI
1 stop6h 35m
Alaska Airlines
Deal found 3/27![Alaska Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 3/29. 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.
Mon 4/131:40 pm
TWF
- DEN
1 stop10h 40m
Multiple Airlines
Fri 4/176:00 am
DEN
- TWF
1 stop6h 00m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$252
This Southwest deal was found by Cheapflights users on 3/27. 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.
Sun 4/264:10 pm
BOI
- DEN
Nonstop1h 55m
Southwest
Sun 5/38:30 am
DEN
- BOI
Nonstop1h 55m
Southwest
Deal found 3/27![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 3/29. 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.
Sat 6/66:41 pm
BOI
- DEN
1 stop3h 59m
Delta
Mon 6/85:40 am
DEN
- BOI
1 stop3h 52m
Delta
Deal found 3/29![Delta logo]()
$304
This United Airlines deal was found by Cheapflights users on 3/30. 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 5/297:00 am
JAC
- DEN
Nonstop1h 40m
United Airlines
Tue 6/24:21 pm
DEN
- JAC
Nonstop1h 33m
United Airlines
Deal found 3/30![United Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 3/27. 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 6/86:08 pm
BOI
- DEN
1 stop5h 37m
Delta
Tue 6/231:15 pm
DEN
- BOI
1 stop5h 58m
Delta
Deal found 3/27![Delta logo]()
$304
This Southwest deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” 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 5/72:00 pm
BOI
- DEN
2 stops9h 10m
Southwest
Sun 5/106:30 pm
DEN
- BOI
1 stop7h 20m
Southwest
Deal found 4/1![Southwest logo]()
$309
This United Airlines deal was found by Cheapflights users on 3/28. 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 7/42:30 pm
IDA
- DEN
Nonstop1h 48m
United Airlines
Sun 7/58:05 am
DEN
- IDA
Nonstop1h 45m
United Airlines
Deal found 3/28![United Airlines logo]()
$312
This Alaska Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” 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 5/187:01 am
GEG
- DEN
1 stop15h 48m
Alaska Airlines
Fri 5/228:00 am
DEN
- GEG
1 stop4h 52m
Alaska Airlines
Deal found 4/1![Alaska Airlines logo]()
$350
This Delta deal was found by Cheapflights users on 3/30. 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 5/15:47 am
IDA
- DEN
1 stop3h 26m
Delta
Sat 5/26:27 pm
DEN
- IDA
1 stop4h 13m
Delta
Deal found 3/30![Delta logo]()
$314
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Sat 5/26:30 am
IDA
- DEN
Nonstop1h 59m
United Airlines
Wed 5/68:10 am
DEN
- IDA
Nonstop1h 45m
United Airlines
Deal found 3/30![United Airlines logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 3/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:19 am
GEG
- DEN
1 stop28h 01m
Alaska Airlines
Tue 4/216:20 pm
DEN
- GEG
1 stop29h 00m
Alaska Airlines
Deal found 3/28![Alaska Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 3/27. 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.
Sun 9/136:00 am
BOI
- DEN
1 stop5h 54m
Delta
Wed 9/167:05 am
DEN
- BOI
1 stop5h 09m
Delta
Deal found 3/27![Delta logo]()
$317
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” 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 5/125:26 pm
IDA
- DEN
Nonstop1h 55m
United Airlines
Mon 5/188:10 am
DEN
- IDA
Nonstop1h 45m
United Airlines
Deal found 4/1![United Airlines logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 4/305:05 am
GEG
- DEN
1 stop4h 45m
Alaska Airlines
Mon 5/48:00 am
DEN
- GEG
1 stop5h 40m
Alaska Airlines
Deal found 3/27![Alaska Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 3/31. 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.
Sat 7/256:00 am
BOI
- DEN
1 stop5h 50m
Delta
Wed 7/296:39 pm
DEN
- BOI
1 stop5h 14m
Delta
Deal found 3/31![Delta logo]()
$317
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” 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 5/105:26 pm
IDA
- DEN
Nonstop1h 55m
United Airlines
Sun 5/178:10 am
DEN
- IDA
Nonstop1h 45m
United Airlines
Deal found 4/1![United Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 3/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/202:25 pm
GEG
- DEN
1 stop7h 20m
Southwest
Mon 5/256:25 pm
DEN
- GEG
1 stop7h 05m
Southwest
Deal found 3/31![Southwest logo]()
$386
This Delta deal was found by Cheapflights users on 3/29. 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.
Thu 7/306:07 pm
BOI
- DEN
1 stop5h 35m
Delta
Tue 8/46:30 am
DEN
- BOI
1 stop5h 10m
Delta
Deal found 3/29![Delta logo]()
$317
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” 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 5/145:26 pm
IDA
- DEN
Nonstop1h 55m
United Airlines
Sat 5/161:55 pm
DEN
- IDA
Nonstop1h 48m
United Airlines
Deal found 4/1![United Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 3/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:20 pm
GEG
- DEN
1 stop6h 55m
Southwest
Tue 9/229:05 pm
DEN
- GEG
Nonstop2h 20m
Southwest
Deal found 3/28![Southwest logo]()
$387
This Delta deal was found by Cheapflights users on 3/28. 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 5/153:23 pm
BOI
- DEN
1 stop8h 21m
Delta
Sun 5/175:30 am
DEN
- BOI
1 stop4h 02m
Delta
Deal found 3/28![Delta logo]()
$317
This Alaska Airlines deal was found by Cheapflights users on 3/29. 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.
Wed 5/131:54 pm
IDA
- DEN
2 stops9h 55m
Alaska Airlines
Wed 5/206:40 am
DEN
- IDA
2 stops16h 13m
Alaska Airlines
Deal found 3/29![Alaska Airlines logo]()
$431
This Southwest deal was found by Cheapflights users on 3/29. 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 7/810:20 am
GEG
- DEN
2 stops7h 15m
Southwest
Wed 7/226:05 pm
DEN
- GEG
1 stop5h 35m
Southwest
Deal found 3/29![Southwest logo]()
$402
This Delta deal was found by Cheapflights users on 3/29. 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.
Thu 7/96:00 am
BOI
- DEN
1 stop3h 12m
Delta
Sun 7/125:40 am
DEN
- BOI
1 stop3h 49m
Delta
Deal found 3/29![Delta logo]()
$317
Last-minute flights from Idaho to DenverDiscover last-minute flight deals from Idaho to Denver. Data last updated April 1, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Denver. Data last updated April 1, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 4/135:11 pm
GEG
- DEN
1 stop6h 09m
Frontier
Thu 4/169:28 am
DEN
- GEG
Nonstop2h 21m
Frontier
Deal found 3/30![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 4/2710:21 pm
IDA
- DEN
1 stop5h 38m
Multiple Airlines
Mon 5/46:00 am
DEN
- IDA
2 stops15h 31m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 5/41:40 pm
TWF
- DEN
1 stop13h 45m
Multiple Airlines
Thu 5/77:12 am
DEN
- TWF
2 stops28h 48m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$201
This Expedia deal was found by Cheapflights users on 3/30. 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.
Tue 5/51:22 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Thu 5/710:22 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 3/30![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 5/71:22 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Sun 5/1010:22 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 3/27![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 5/71:22 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Tue 5/1210:22 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 3/29![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” 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 5/1110:21 pm
IDA
- DEN
1 stop11h 17m
Multiple Airlines
Mon 5/186:10 am
DEN
- IDA
1 stop9h 17m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 3/31. 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.
Tue 5/121:22 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Tue 5/2610:25 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 3/31![Frontier logo]()
$133
This Expedia deal was found by Cheapflights users on 3/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/124:38 pm
BOI
- DEN
1 stop5h 11m
Multiple Airlines
Tue 5/2610:25 am
DEN
- BOI
Nonstop2h 05m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$179
This Orbitz deal was found by Cheapflights users on 3/30. 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 Orbitz 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 3/30![Frontier logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 5/211:25 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Tue 5/2610:25 am
DEN
- BOI
Nonstop2h 05m
Frontier
Deal found 3/31![Frontier logo]()
$160
This Frontier deal was found by Cheapflights users on 3/31. 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 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 3/31![Frontier logo]()
$188
One-way flights from Idaho to DenverSearch for one-way flight options from Idaho to Denver. Find affordable one-way fares based on user searches. Data last updated April 1, 2026.
Search for one-way flight options from Idaho to Denver. Find affordable one-way fares based on user searches. Data last updated April 1, 2026.
This Frontier deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” 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 6/21:25 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Deal found 4/1![Frontier logo]()
$67
This Kiwi.com deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” 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 5/39:19 pm
GEG
- DEN
1 stop29h 06m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 3/31. 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.
Wed 5/1312:33 pm
GEG
- DEN
Nonstop2h 26m
Frontier
Deal found 3/31![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 3/28. 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.
Tue 5/191:22 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Deal found 3/28![Frontier logo]()
$80
This Frontier deal was found by Cheapflights users on 3/30. 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 5/261:25 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Deal found 3/30![Frontier logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 3/31. 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.
Sun 5/318:45 pm
GEG
- DEN
1 stop29h 40m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 4/135:11 pm
GEG
- DEN
1 stop6h 09m
Frontier
Deal found 3/28![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 5/211:25 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Deal found 3/31![Frontier logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 4/2311:44 am
GEG
- DEN
Nonstop2h 14m
Frontier
Deal found 3/29![Frontier logo]()
$93
This Frontier deal was found by Cheapflights users on 3/30. 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.
Sun 5/311:25 pm
BOI
- DEN
Nonstop2h 16m
Frontier
Deal found 3/30![Frontier logo]()
$94
This Frontier deal was found by Cheapflights users on 3/30. 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.
Thu 4/3011:44 am
GEG
- DEN
Nonstop2h 14m
Frontier
Deal found 3/30![Frontier logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” 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 5/810:21 pm
IDA
- DEN
1 stop11h 17m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$98
Find flight deals from Idaho to Denver
Keep the following information in mind while searching for Idaho to Denver flight deals. Data was last updated April 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $133 (Kiwi.com) |
One-way from | $67 (Frontier) |
Popular in | April |
Cheapest in | October |
Average price | $324 |
Good round-trip deal | $350 or less |
Good one-way deal | $175 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho to Denver 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 1, 2026.
Use the filters below to find and compare flights from Idaho to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Twin FallsDenver
TWF - DEN
TWFDEN
Twin Falls Joslin
Mon 5/4
1:40 pm-3:25 am
1 stop13h 45m
Denver Intl
Thu 5/7
7:12 am-12:00 pm
2 stops28h 48m
$201
SpokaneDenver
GEG - DEN
GEGDEN
Spokane
Mon 5/18
12:33 pm-3:59 pm
Nonstop2h 26m
Denver Intl
Fri 5/22
10:12 am-11:38 am
Nonstop2h 26m
$243
Idaho FallsDenver
IDA - DEN
IDADEN
Idaho Falls Fanning Field
Fri 5/1
5:26 pm-7:21 pm
Nonstop1h 55m
Denver Intl
Sat 5/2
8:10 am-9:55 am
Nonstop1h 45m
$249
Twin FallsDenver
TWF - DEN
TWFDEN
Twin Falls Joslin
Mon 4/13
1:40 pm-12:20 am
1 stop10h 40m
Denver Intl
Fri 4/17
6:00 am-12:00 pm
1 stop6h 00m
$252
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Wed 4/29
3:44 pm-11:50 pm
1 stop8h 06m
Denver Intl
Mon 5/4
5:30 am-9:53 am
1 stop4h 23m
$291
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Wed 4/29
7:05 am-1:40 pm
2 stops6h 35m
Denver Intl
Wed 5/6
4:25 pm-11:30 pm
1 stop7h 05m
$296
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Sun 4/26
4:10 pm-6:05 pm
Nonstop1h 55m
Denver Intl
Sun 5/3
8:30 am-10:25 am
Nonstop1h 55m
$297
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Sat 6/6
6:41 pm-10:40 pm
1 stop3h 59m
Denver Intl
Mon 6/8
5:40 am-9:32 am
1 stop3h 52m
$304
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Mon 6/8
6:08 pm-11:45 pm
1 stop5h 37m
Denver Intl
Tue 6/23
1:15 pm-7:13 pm
1 stop5h 58m
$304
Quickest round-trip
JacksonDenver
JAC - DEN
JACDEN
Jackson Hole
Fri 5/29
7:00 am-8:40 am
Nonstop1h 40m
Denver Intl
Tue 6/2
4:21 pm-5:54 pm
Nonstop1h 33m
$309
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Idaho to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Idaho with our price prediction graph.
BOI-DEN
GEG-DEN
TWF-DEN
IDA-DEN
SUN-DEN
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 Denver
USID-DEN
BOI-DEN
GEG-DEN
TWF-DEN
IDA-DEN
What is the cheapest month to book a flight from Idaho to Denver?
Currently, February is the cheapest month in which you can book a flight from Idaho to Denver (average of $56). Flying from Idaho to Denver 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 DEN?
Find hourly flight availability from Idaho to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 1, 2026.
When flying from Idaho to Denver, 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 Denver
Explore weekly flight availability from Idaho to Denver. 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 1, 2026.
The most flights from USID to DEN are scheduled on a Wednesday (16 on average). You will have fewer flight options on Saturday, 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 Denver?
Related info for your journey
Find useful and relevant information for your journey from Idaho to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Denver?
Book flights to Denver if you plan to visit one of these locationsThornton
Black Hawk
Lakewood
Westminster
Broomfield
Golden
Centennial
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Fort Morgan
Glendale
Brighton
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Denver flight routes
Flights by cabin class
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Popular flights
Top destinations
Alternative routes for Idaho to Denver
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.
Other flights to Denver
Explore flights to Denver departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 1, 2026.
Search flights from Idaho to Denver by cabin class
Find flights from Idaho to Denver, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Idaho and Denver flights
Browse other Idaho and Denver flight options. Last updated on April 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Idaho to Denver flights
Consider these flights traveling from Idaho to Denver.
Top 6 airlines flying from Idaho to Denver
Discover the top 6 airlines that operate flights from Idaho to Denver. 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 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$43 | Average$84 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$52 | Average$124 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$104 | Average$318 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$154 | Average$342 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$162 | Average$311 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$189 | Average$285 | FlexibilityNo cancel fee | On-time63% |