$87+ Cheap flights from Denver (DEN) to Idaho
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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
Jul 2 — Jul 91
Round-trip
1 adult, Economy
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Find cheap flights from Denver to Idaho with Cheapflights
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Cheapest flights from Denver to IdahoExplore the most affordable flight options available from Denver to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 2, 2026.
Explore the most affordable flight options available from Denver to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 2, 2026.
This Expedia deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1610:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Thu 7/231:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 6/2![Frontier logo]()
$178
This Frontier deal was found by Cheapflights users on 5/30. 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 9/249:55 am
DEN
- BOI
Nonstop2h 09m
Frontier
Tue 9/2912:59 pm
BOI
- DEN
Nonstop2h 01m
Frontier
Deal found 5/30![Frontier logo]()
$184
This deal was found by Cheapflights users on 5/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1410:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Tue 7/211:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 5/30![Frontier logo]()
$187
This Frontier deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 6/2510:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Sun 6/281:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Deal found 6/2![Frontier logo]()
$188
This Frontier deal was found by Cheapflights users on 5/30. 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 7/3010:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Tue 8/41:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 5/30![Frontier logo]()
$191
This Frontier deal was found by Cheapflights users on 5/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/710:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Tue 7/141:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 5/29![Frontier logo]()
$194
This Frontier deal was found by Cheapflights users on 5/30. 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 6/2110:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Tue 6/231:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Deal found 5/30![Frontier logo]()
$201
This Expedia deal was found by Cheapflights users on 5/31. 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 6/3010:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Tue 7/71:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 5/31![Frontier logo]()
$206
This Expedia deal was found by Cheapflights users on 5/31. 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.
Wed 6/246:02 am
DEN
- BOI
1 stop6h 45m
Multiple Airlines
Tue 6/301:25 pm
BOI
- DEN
Nonstop2h 23m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$209
This Frontier deal was found by Cheapflights users on 5/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/710:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Thu 7/91:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 5/29![Frontier logo]()
$211
This Southwest deal was found by Cheapflights users on 5/29. 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 8/259:05 pm
DEN
- GEG
Nonstop2h 20m
Southwest
Tue 9/17:00 am
GEG
- DEN
Nonstop2h 15m
Southwest
Deal found 5/29![Southwest logo]()
$239
This United Airlines deal was found by Cheapflights users on 5/28. 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 6/411:37 am
DEN
- WYS
Nonstop1h 55m
United Airlines
Mon 6/82:19 pm
WYS
- DEN
Nonstop1h 41m
United Airlines
Deal found 5/28![United Airlines logo]()
$243
Best flights from Denver to IdahoDiscover carefully curated flight deals from Denver to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 2, 2026.
Discover carefully curated flight deals from Denver to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 2, 2026.
This Southwest deal was found by Cheapflights users on 5/29. 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 8/251:05 pm
DEN
- GEG
2 stops9h 35m
Southwest
Tue 9/17:00 am
GEG
- DEN
Nonstop2h 15m
Southwest
Deal found 5/29![Southwest logo]()
$254
This United Airlines deal was found by Cheapflights users on 5/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1211:37 am
DEN
- WYS
Nonstop1h 55m
United Airlines
Thu 6/182:19 pm
WYS
- DEN
Nonstop1h 41m
United Airlines
Deal found 5/31![United Airlines logo]()
$266
This Delta deal was found by Cheapflights users on 5/30. 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 7/173:55 pm
DEN
- IDA
1 stop6h 37m
Delta
Mon 7/203:22 pm
IDA
- DEN
1 stop4h 39m
Delta
Deal found 5/30![Delta logo]()
$269
This Alaska Airlines deal was found by Cheapflights users on 5/28. 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.
Tue 8/251:43 pm
DEN
- BOI
1 stop6h 37m
Alaska Airlines
Mon 8/315:52 pm
BOI
- DEN
1 stop5h 24m
Alaska Airlines
Deal found 5/28![Alaska Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 5/28. 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.
Fri 6/266:10 am
DEN
- TWF
1 stop5h 50m
Multiple Airlines
Mon 6/291:45 pm
TWF
- DEN
1 stop14h 13m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$316
This Delta deal was found by Cheapflights users on 5/29. 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 6/255:40 am
DEN
- IDA
1 stop5h 03m
Delta
Sat 6/276:00 am
IDA
- DEN
1 stop5h 53m
Delta
Deal found 5/29![Delta logo]()
$269
This United Airlines deal was found by Cheapflights users on 5/28. 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 6/192:10 pm
DEN
- WYS
Nonstop1h 52m
United Airlines
Tue 6/232:19 pm
WYS
- DEN
Nonstop1h 41m
United Airlines
Deal found 5/28![United Airlines logo]()
$287
This Southwest deal was found by Cheapflights users on 5/29. 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 9/108:40 pm
DEN
- GEG
Nonstop2h 20m
Southwest
Mon 9/141:10 pm
GEG
- DEN
2 stops8h 50m
Southwest
Deal found 5/29![Southwest logo]()
$306
This Delta deal was found by Cheapflights users on 5/28. 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.
Tue 7/1412:45 pm
DEN
- BOI
1 stop5h 06m
Delta
Tue 7/216:42 pm
BOI
- DEN
1 stop3h 19m
Delta
Deal found 5/28![Delta logo]()
$283
This United Airlines deal was found by Cheapflights users on 5/28. 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 6/202:45 pm
DEN
- WYS
Nonstop1h 52m
United Airlines
Tue 6/232:19 pm
WYS
- DEN
Nonstop1h 41m
United Airlines
Deal found 5/28![United Airlines logo]()
$287
This Delta deal was found by Cheapflights users on 6/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/237:00 pm
DEN
- IDA
1 stop3h 31m
Delta
Sun 6/286:00 am
IDA
- DEN
1 stop3h 18m
Delta
Deal found 6/1![Delta logo]()
$284
This Southwest deal was found by Cheapflights users on 5/29. 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 7/248:55 pm
DEN
- BOI
Nonstop2h 05m
Southwest
Mon 7/277:40 pm
BOI
- DEN
1 stop5h 05m
Southwest
Deal found 5/29![Southwest logo]()
$317
This Alaska Airlines deal was found by Cheapflights users on 5/30. 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.
Fri 7/36:15 pm
DEN
- GEG
1 stop5h 21m
Alaska Airlines
Tue 7/75:00 am
GEG
- DEN
1 stop5h 03m
Alaska Airlines
Deal found 5/30![Alaska Airlines logo]()
$366
This United Airlines deal was found by Cheapflights users on 5/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/38:25 pm
DEN
- BOI
Nonstop2h 12m
United Airlines
Tue 7/76:30 am
BOI
- DEN
Nonstop1h 59m
United Airlines
Deal found 5/31![United Airlines logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 5/30. 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 6/156:10 am
DEN
- TWF
1 stop5h 50m
Multiple Airlines
Fri 6/191:45 pm
TWF
- DEN
1 stop14h 13m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$373
This Delta deal was found by Cheapflights users on 5/31. 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 7/13:55 pm
DEN
- IDA
1 stop6h 36m
Delta
Sat 7/46:00 am
IDA
- DEN
1 stop5h 53m
Delta
Deal found 5/31![Delta logo]()
$284
This United Airlines deal was found by Cheapflights users on 5/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/711:45 am
DEN
- IDA
Nonstop1h 40m
United Airlines
Tue 7/145:54 pm
IDA
- DEN
Nonstop1h 51m
United Airlines
Deal found 5/31![United Airlines logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 6/1. 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 7/66:10 am
DEN
- TWF
1 stop5h 50m
Multiple Airlines
Fri 7/101:45 pm
TWF
- DEN
1 stop14h 03m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$396
This Southwest deal was found by Cheapflights users on 5/29. 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.
Mon 6/297:00 pm
DEN
- BOI
1 stop5h 20m
Southwest
Thu 7/23:25 pm
BOI
- DEN
2 stops9h 15m
Southwest
Deal found 5/29![Southwest logo]()
$362
This Alaska Airlines deal was found by Cheapflights users on 5/28. 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.
Sat 8/156:02 am
DEN
- GEG
2 stops9h 53m
Alaska Airlines
Sat 8/227:03 am
GEG
- DEN
1 stop13h 10m
Alaska Airlines
Deal found 5/28![Alaska Airlines logo]()
$406
This United Airlines deal was found by Cheapflights users on 5/29. 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.
Thu 6/2511:45 am
DEN
- IDA
Nonstop1h 40m
United Airlines
Sat 6/277:00 am
IDA
- DEN
Nonstop1h 55m
United Airlines
Deal found 5/29![United Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 5/27. 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 6/197:05 am
DEN
- IDA
1 stop3h 38m
Delta
Tue 9/111:35 am
IDA
- DEN
1 stop3h 27m
Delta
Deal found 5/27![Delta logo]()
$314
This Southwest deal was found by Cheapflights users on 5/31. 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.
Sun 6/286:45 pm
DEN
- BOI
1 stop6h 35m
Southwest
Sun 7/59:00 pm
BOI
- DEN
1 stop4h 50m
Southwest
Deal found 5/31![Southwest logo]()
$367
This Alaska Airlines deal was found by Cheapflights users on 5/31. 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.
Tue 8/253:00 pm
DEN
- SUN
1 stop18h 39m
Alaska Airlines
Mon 8/3110:21 am
SUN
- DEN
1 stop6h 15m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 5/29. 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.
Sat 11/147:45 am
DEN
- IDA
Nonstop1h 43m
United Airlines
Tue 11/175:57 pm
IDA
- DEN
Nonstop1h 43m
United Airlines
Deal found 5/29![United Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 5/28. 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 6/189:10 pm
DEN
- BOI
1 stop4h 35m
Southwest
Sat 6/205:10 pm
BOI
- DEN
2 stops7h 35m
Southwest
Deal found 5/28![Southwest logo]()
$372
This Alaska Airlines deal was found by Cheapflights users on 5/31. 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.
Tue 7/146:02 am
DEN
- GEG
2 stops9h 53m
Alaska Airlines
Mon 8/37:41 pm
GEG
- DEN
1 stop14h 22m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$430
This United Airlines deal was found by Cheapflights users on 5/30. 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.
Wed 7/1511:37 am
DEN
- WYS
Nonstop1h 55m
United Airlines
Wed 7/222:07 pm
WYS
- DEN
Nonstop1h 41m
United Airlines
Deal found 5/30![United Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 5/28. 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.
Wed 7/812:45 pm
DEN
- PIH
1 stop5h 38m
Delta
Sat 7/1111:45 am
PIH
- DEN
1 stop3h 08m
Delta
Deal found 5/28![Delta logo]()
$357
This Delta deal was found by Cheapflights users on 5/29. 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.
Fri 6/267:00 pm
DEN
- BOI
1 stop5h 09m
Delta
Sun 6/286:42 pm
BOI
- DEN
1 stop3h 59m
Delta
Deal found 5/29![Delta logo]()
$358
Last-minute flights from Denver to IdahoDiscover last-minute flight deals from Denver to Idaho. Data last updated June 2, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to Idaho. Data last updated June 2, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 5/28. 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 6/411:37 am
DEN
- WYS
Nonstop1h 55m
United Airlines
Mon 6/82:19 pm
WYS
- DEN
Nonstop1h 41m
United Airlines
Deal found 5/28![United Airlines logo]()
$243
This Frontier deal was found by Cheapflights users on 5/30. 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 6/2110:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Tue 6/231:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Deal found 5/30![Frontier logo]()
$201
This Expedia deal was found by Cheapflights users on 5/31. 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.
Wed 6/246:02 am
DEN
- BOI
1 stop6h 45m
Multiple Airlines
Tue 6/301:25 pm
BOI
- DEN
Nonstop2h 23m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$209
This Frontier deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 6/2510:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Sun 6/281:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Deal found 6/2![Frontier logo]()
$188
This Expedia deal was found by Cheapflights users on 5/31. 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 6/3010:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Tue 7/71:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 5/31![Frontier logo]()
$206
This Frontier deal was found by Cheapflights users on 5/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/710:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Tue 7/141:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 5/29![Frontier logo]()
$194
This Frontier deal was found by Cheapflights users on 5/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/710:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Thu 7/91:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 5/29![Frontier logo]()
$211
This Expedia deal was found by Cheapflights users on 6/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:00 am
DEN
- BOI
1 stop7h 46m
Multiple Airlines
Tue 7/141:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$213
This deal was found by Cheapflights users on 5/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1410:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Tue 7/211:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 5/30![Frontier logo]()
$187
This Expedia deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1610:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Thu 7/231:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 6/2![Frontier logo]()
$178
This Orbitz deal was found by Cheapflights users on 6/1. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2310:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Tue 7/281:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 6/1![Frontier logo]()
$215
This Frontier deal was found by Cheapflights users on 5/30. 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 7/3010:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Tue 8/41:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 5/30![Frontier logo]()
$191
One-way flights from Denver to IdahoSearch for one-way flight options from Denver to Idaho. Find affordable one-way fares based on user searches. Data last updated June 2, 2026.
Search for one-way flight options from Denver to Idaho. Find affordable one-way fares based on user searches. Data last updated June 2, 2026.
This Frontier deal was found by Cheapflights users on 5/30. 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 7/2810:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 5/30![Frontier logo]()
$87
This Frontier deal was found by Cheapflights users on 6/1. 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.
Thu 7/1610:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 6/1![Frontier logo]()
$89
This Frontier deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 6/2810:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Deal found 6/2![Frontier logo]()
$94
This Delta deal was found by Cheapflights users on 5/29. 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.
Tue 8/255:35 am
DEN
- BOI
1 stop6h 39m
Delta
Deal found 5/29![Delta logo]()
$95
This Frontier deal was found by Cheapflights users on 5/30. 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 8/2710:08 am
DEN
- BOI
Nonstop2h 01m
Frontier
Deal found 5/30![Frontier logo]()
$97
This Frontier deal was found by Cheapflights users on 5/30. 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 6/2310:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Deal found 5/30![Frontier logo]()
$100
This Frontier deal was found by Cheapflights users on 5/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2110:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 5/28![Frontier logo]()
$105
This Priceline deal was found by Cheapflights users on 5/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2610:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 5/30![Frontier logo]()
$114
This Southwest deal was found by Cheapflights users on 5/29. 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 8/259:05 pm
DEN
- GEG
Nonstop2h 20m
Southwest
Deal found 5/29![Southwest logo]()
$120
This Frontier deal was found by Cheapflights users on 5/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2410:11 am
DEN
- GEG
Nonstop2h 25m
Frontier
Deal found 5/29![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 5/30. 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.
Wed 8/268:44 am
DEN
- GEG
2 stops25h 38m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$127
This Delta deal was found by Cheapflights users on 5/29. 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.
Tue 8/2512:54 pm
DEN
- GEG
1 stop4h 15m
Delta
Deal found 5/29![Delta logo]()
$129
Find flight deals from Denver to Idaho
Keep the following information in mind while searching for Denver to Idaho flight deals. Data was last updated June 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $184 (Frontier) |
One-way from | $87 (Frontier) |
Popular in | April |
Cheapest in | February |
Average price | $314 |
Good round-trip deal | $211 or less |
Good one-way deal | $147 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Denver to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 2, 2026.
Use the filters below to find and compare flights from Denver to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DenverSpokane
DEN - GEG
DENGEG
Denver Intl
Tue 8/25
1:05 pm-9:40 pm
2 stops9h 35m
Spokane
Tue 9/1
7:00 am-10:15 am
Nonstop2h 15m
$254
DenverWest Yellowstone
DEN - WYS
DENWYS
Denver Intl
Fri 6/12
11:37 am-1:32 pm
Nonstop1h 55m
West Yellowstone
Thu 6/18
2:19 pm-4:00 pm
Nonstop1h 41m
$266
DenverIdaho Falls
DEN - IDA
DENIDA
Denver Intl
Fri 7/17
3:55 pm-10:32 pm
1 stop6h 37m
Idaho Falls Fanning Field
Mon 7/20
3:22 pm-8:01 pm
1 stop4h 39m
$269
DenverIdaho Falls
DEN - IDA
DENIDA
Denver Intl
Thu 6/25
5:40 am-10:43 am
1 stop5h 03m
Idaho Falls Fanning Field
Sat 6/27
6:00 am-11:53 am
1 stop5h 53m
$269
DenverBoise
DEN - BOI
DENBOI
Denver Intl
Tue 8/25
1:43 pm-8:20 pm
1 stop6h 37m
Boise Air Term. Gowen Fld
Mon 8/31
5:52 pm-11:16 pm
1 stop5h 24m
$280
DenverBoise
DEN - BOI
DENBOI
Denver Intl
Tue 7/14
12:45 pm-5:51 pm
1 stop5h 06m
Boise Air Term. Gowen Fld
Tue 7/21
6:42 pm-10:01 pm
1 stop3h 19m
$283
DenverIdaho Falls
DEN - IDA
DENIDA
Denver Intl
Tue 6/23
7:00 pm-10:31 pm
1 stop3h 31m
Idaho Falls Fanning Field
Sun 6/28
6:00 am-9:18 am
1 stop3h 18m
$284
DenverIdaho Falls
DEN - IDA
DENIDA
Denver Intl
Wed 7/1
3:55 pm-10:31 pm
1 stop6h 36m
Idaho Falls Fanning Field
Sat 7/4
6:00 am-11:53 am
1 stop5h 53m
$284
DenverWest Yellowstone
DEN - WYS
DENWYS
Denver Intl
Fri 6/19
2:10 pm-4:02 pm
Nonstop1h 52m
West Yellowstone
Tue 6/23
2:19 pm-4:00 pm
Nonstop1h 41m
$287
DenverWest Yellowstone
DEN - WYS
DENWYS
Denver Intl
Sat 6/20
2:45 pm-4:37 pm
Nonstop1h 52m
West Yellowstone
Tue 6/23
2:19 pm-4:00 pm
Nonstop1h 41m
$287
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Denver to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Denver with our price prediction graph.
DEN-BOI
DEN-GEG
DEN-WYS
DEN-IDA
DEN-SUN
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 Denver to Idaho
DEN-USID
DEN-BOI
DEN-GEG
DEN-WYS
DEN-IDA
What is the cheapest month to book a flight from Denver to Idaho?
Currently, December is the cheapest month in which you can book a flight from Denver to Idaho (average of $29). Flying from Denver to Idaho in April is currently the most expensive (average of $114). 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 DEN to ID?
Find hourly flight availability from Denver to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 2, 2026.
A simple way to save on the total cost of your ticket is to fly from Denver to Idaho in the afternoon. If you’re flexible enough to do this you can expect to save up to 32% on your trip compared to booking a flight at noon.
Weekly flight availability from Denver to Idaho
Explore weekly flight availability from Denver to Idaho. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 2, 2026.
The most flights from DEN to USID are scheduled on a Monday (17 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 Denver to Idaho?
How far ahead should I book a flight from Denver to Idaho?
Booking 61 days in advance of your planned departure date is, on average, the best time to get cheap flights from Denver to Idaho. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest day to fly from Denver to Idaho?
Use this chart to determine the cheapest time to fly round-trip from Denver to Idaho. Price data was last updated on May 30, 2026.
Travelers seeking maximum savings on their Denver to Idaho flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Idaho
Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated June 2, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Denver to Idaho have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from Denver to Idaho. 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 Denver to Idaho
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Idaho by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Denver to Idaho by cabin class
Find flights from Denver to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Denver and Idaho flights
Browse other Denver and Idaho flight options. Last updated on June 2, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Denver to Idaho flights
Consider these flights traveling from Denver to Idaho.
Top 5 airlines flying from Denver to Idaho
Discover the top 5 airlines that operate flights from Denver to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$45 | Average$90 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$55 | Average$132 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$68 | Average$308 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$175 | Average$363 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$189 | Average$311 | FlexibilityNo cancel fee | On-time63% |