$54+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
Sep 3 — Sep 101
Round-trip
1 adult, Economy
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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 August 4, 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 August 4, 2026.
This Expedia deal was found by Cheapflights users on 8/2. 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.
Sun 8/309:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Sun 9/612:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 8/2![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3010:50 pm
DEN
- BOI
1 stop15h 05m
Frontier
Mon 10/123:52 pm
BOI
- DEN
1 stop21h 52m
Frontier
Deal found 8/2![Frontier logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 10/17:30 am
DEN
- BOI
1 stop6h 25m
Frontier
Fri 10/22:50 pm
BOI
- DEN
1 stop19h 17m
Frontier
Deal found 8/3![Frontier logo]()
$181
This Priceline deal was found by Cheapflights users on 8/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:08 am
DEN
- BOI
1 stop5h 04m
Multiple Airlines
Sun 9/612:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Deal found 8/2![Multiple Airlines logo]()
$183
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 9/107:30 am
DEN
- BOI
1 stop6h 25m
Frontier
Fri 9/112:50 pm
BOI
- DEN
1 stop19h 17m
Frontier
Deal found 7/31![Frontier logo]()
$184
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.
Wed 9/96:38 pm
DEN
- BOI
1 stop19h 17m
Frontier
Fri 9/112:50 pm
BOI
- DEN
1 stop8h 54m
Frontier
Deal found 7/31![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/287:30 am
DEN
- BOI
1 stop6h 25m
Frontier
Thu 10/12:50 pm
BOI
- DEN
1 stop8h 54m
Frontier
Deal found 8/3![Frontier logo]()
$193
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 10/86:23 am
DEN
- BOI
1 stop8h 34m
Frontier
Sun 10/113:52 pm
BOI
- DEN
2 stops29h 37m
Frontier
Deal found 7/31![Frontier logo]()
$194
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.
Wed 9/27:40 am
DEN
- BOI
Nonstop1h 55m
United Airlines
Mon 9/76:30 am
BOI
- DEN
Nonstop2h 01m
United Airlines
Deal found 7/30![United Airlines logo]()
$197
This Frontier deal was found by Cheapflights users on 8/1. 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 8/279:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Tue 9/11:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 8/1![Frontier logo]()
$198
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 9/39:29 am
DEN
- BOI
Nonstop2h 00m
Multiple Airlines
Tue 9/86:00 am
BOI
- DEN
1 stop4h 52m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$199
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 10/222:39 pm
DEN
- IDA
1 stop22h 55m
Multiple Airlines
Mon 10/267:30 pm
IDA
- DEN
1 stop8h 22m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$229
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 August 4, 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 August 4, 2026.
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.
Tue 8/258:22 am
DEN
- BOI
1 stop7h 09m
Alaska Airlines
Mon 8/316:00 am
BOI
- DEN
1 stop5h 07m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$217
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/47:40 am
DEN
- BOI
Nonstop1h 55m
United Airlines
Sun 9/610:31 am
BOI
- DEN
Nonstop2h 02m
United Airlines
Deal found 8/3![United Airlines logo]()
$252
This Southwest deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/51:25 pm
DEN
- BOI
2 stops7h 35m
Southwest
Tue 9/86:25 am
BOI
- DEN
2 stops7h 35m
Southwest
Deal found 8/3![Southwest logo]()
$273
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 11/47:15 am
DEN
- IDA
1 stop5h 07m
Delta
Sat 11/76:00 am
IDA
- DEN
1 stop3h 44m
Delta
Deal found 8/3![Delta logo]()
$279
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.
Fri 8/146:10 am
DEN
- TWF
1 stop5h 50m
Multiple Airlines
Mon 8/171:45 pm
TWF
- DEN
2 stops31h 31m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$406
This Alaska Airlines deal was found by Cheapflights users on 8/1. 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.
Thu 9/248:08 am
DEN
- BOI
1 stop5h 06m
Alaska Airlines
Tue 9/296:49 pm
BOI
- DEN
1 stop26h 24m
Alaska Airlines
Deal found 8/1![Alaska Airlines logo]()
$256
This United Airlines deal was found by Cheapflights users on 8/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1111:24 am
DEN
- WYS
Nonstop1h 56m
United Airlines
Fri 9/186:00 pm
WYS
- DEN
Nonstop1h 45m
United Airlines
Deal found 8/2![United Airlines logo]()
$263
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 9/39:00 am
DEN
- BOI
1 stop6h 15m
Southwest
Sun 9/66:20 am
BOI
- DEN
2 stops7h 30m
Southwest
Deal found 7/30![Southwest logo]()
$287
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:24 am
DEN
- WYS
Nonstop1h 56m
United Airlines
Mon 8/241:55 pm
WYS
- DEN
Nonstop1h 45m
United Airlines
Deal found 7/31![United Airlines logo]()
$286
This Alaska Airlines deal was found by Cheapflights users on 8/1. 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.
Sat 9/126:17 am
DEN
- BOI
1 stop14h 03m
Alaska Airlines
Sat 9/196:23 am
BOI
- DEN
2 stops14h 50m
Alaska Airlines
Deal found 8/1![Alaska Airlines logo]()
$288
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.
Thu 8/205:35 am
DEN
- PIH
1 stop4h 59m
Delta
Wed 8/267:00 pm
PIH
- DEN
1 stop3h 55m
Delta
Deal found 7/30![Delta logo]()
$317
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.
Thu 8/205:35 am
DEN
- IDA
1 stop5h 15m
Delta
Wed 8/266:00 am
IDA
- DEN
1 stop3h 14m
Delta
Deal found 7/30![Delta logo]()
$317
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Sat 10/178:25 pm
DEN
- BOI
Nonstop2h 08m
United Airlines
Mon 10/1910:30 am
BOI
- DEN
Nonstop1h 58m
United Airlines
Deal found 8/1![United Airlines logo]()
$289
This Southwest deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 10/228:35 am
DEN
- GEG
Nonstop2h 25m
Southwest
Tue 10/271:55 pm
GEG
- DEN
Nonstop2h 10m
Southwest
Deal found 8/3![Southwest logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:08 pm
DEN
- BOI
1 stop4h 47m
Alaska Airlines
Sun 8/308:25 pm
BOI
- DEN
1 stop14h 42m
Alaska Airlines
Deal found 8/2![Alaska Airlines logo]()
$298
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/177:40 am
DEN
- BOI
Nonstop1h 55m
United Airlines
Mon 9/215:40 pm
BOI
- DEN
Nonstop2h 01m
United Airlines
Deal found 8/3![United Airlines logo]()
$289
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.
Sat 8/291:35 pm
DEN
- GEG
2 stops7h 45m
Southwest
Sat 9/511:20 am
GEG
- DEN
2 stops7h 55m
Southwest
Deal found 7/30![Southwest logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:08 pm
DEN
- GEG
1 stop5h 03m
Alaska Airlines
Mon 9/217:24 pm
GEG
- DEN
1 stop14h 28m
Alaska Airlines
Deal found 8/2![Alaska Airlines logo]()
$299
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/18:32 pm
DEN
- BOI
Nonstop2h 08m
United Airlines
Tue 9/810:31 am
BOI
- DEN
Nonstop2h 02m
United Airlines
Deal found 8/4![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 8/1. 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.
Thu 9/248:05 am
DEN
- IDA
1 stop4h 10m
Delta
Wed 10/216:56 pm
IDA
- DEN
1 stop3h 44m
Delta
Deal found 8/1![Delta logo]()
$359
This Southwest deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/239:05 pm
DEN
- GEG
Nonstop2h 25m
Southwest
Mon 9/284:20 pm
GEG
- DEN
1 stop6h 20m
Southwest
Deal found 8/3![Southwest logo]()
$329
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 9/238:08 am
DEN
- GEG
2 stops7h 42m
Alaska Airlines
Sat 9/266:00 am
GEG
- DEN
1 stop14h 13m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$323
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.
Wed 8/196:43 pm
DEN
- LWS
1 stop5h 16m
Delta
Sun 8/239:23 am
LWS
- DEN
1 stop7h 25m
Delta
Deal found 7/30![Delta logo]()
$366
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 10/111:34 am
DEN
- WYS
Nonstop1h 56m
United Airlines
Thu 10/82:05 pm
WYS
- DEN
Nonstop1h 45m
United Airlines
Deal found 7/30![United Airlines logo]()
$313
This Southwest deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/104:10 pm
DEN
- GEG
2 stops7h 05m
Southwest
Wed 9/166:15 am
GEG
- DEN
2 stops8h 45m
Southwest
Deal found 8/3![Southwest logo]()
$349
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 8/1411:24 am
DEN
- WYS
Nonstop1h 56m
United Airlines
Sun 8/164:44 pm
WYS
- DEN
Nonstop1h 45m
United Airlines
Deal found 7/30![United Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 8/1. 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.
Sat 8/296:43 pm
DEN
- LWS
1 stop5h 11m
Delta
Sat 9/512:23 pm
LWS
- DEN
1 stop6h 38m
Delta
Deal found 8/1![Delta logo]()
$381
This Alaska Airlines deal was found by Cheapflights users on 8/1. 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.
Sun 8/238:08 am
DEN
- GEG
1 stop4h 44m
Alaska Airlines
Tue 8/251:27 pm
GEG
- DEN
1 stop8h 49m
Alaska Airlines
Deal found 8/1![Alaska Airlines logo]()
$355
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 8/2011:25 am
DEN
- WYS
Nonstop1h 56m
United Airlines
Mon 8/241:55 pm
WYS
- DEN
Nonstop1h 45m
United Airlines
Deal found 7/30![United Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 8/1. 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.
Sat 8/298:35 am
DEN
- TWF
1 stop3h 48m
Delta
Sat 9/56:16 am
TWF
- DEN
1 stop2h 58m
Delta
Deal found 8/1![Delta logo]()
$383
Last-minute flights from Denver to IdahoDiscover last-minute flight deals from Denver to Idaho. Data last updated August 4, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to Idaho. Data last updated August 4, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/1. 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 8/279:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Tue 9/11:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 8/1![Frontier logo]()
$198
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.
Sat 8/291:35 pm
DEN
- BOI
Nonstop1h 55m
Southwest
Sat 9/53:25 pm
BOI
- DEN
1 stop4h 50m
Southwest
Deal found 7/30![Southwest logo]()
$207
This Expedia deal was found by Cheapflights users on 8/2. 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.
Sun 8/309:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Sun 9/612:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 8/2![Frontier logo]()
$173
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.
Wed 9/27:40 am
DEN
- BOI
Nonstop1h 55m
United Airlines
Mon 9/76:30 am
BOI
- DEN
Nonstop2h 01m
United Airlines
Deal found 7/30![United Airlines logo]()
$197
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 9/39:29 am
DEN
- BOI
Nonstop2h 00m
Multiple Airlines
Tue 9/86:00 am
BOI
- DEN
1 stop4h 52m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 8/1. 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.
Thu 9/36:10 am
DEN
- IDA
1 stop26h 44m
Multiple Airlines
Mon 9/78:36 pm
IDA
- DEN
1 stop12h 29m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$256
This Priceline deal was found by Cheapflights users on 8/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:08 am
DEN
- BOI
1 stop5h 04m
Multiple Airlines
Sun 9/612:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Deal found 8/2![Multiple Airlines logo]()
$183
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.
Wed 9/96:38 pm
DEN
- BOI
1 stop19h 17m
Frontier
Fri 9/112:50 pm
BOI
- DEN
1 stop8h 54m
Frontier
Deal found 7/31![Frontier logo]()
$185
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 9/107:30 am
DEN
- BOI
1 stop6h 25m
Frontier
Fri 9/112:50 pm
BOI
- DEN
1 stop19h 17m
Frontier
Deal found 7/31![Frontier logo]()
$184
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 9/107:30 am
DEN
- BOI
1 stop6h 25m
Frontier
Sun 9/132:50 pm
BOI
- DEN
2 stops24h 15m
Frontier
Deal found 7/31![Frontier logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/287:30 am
DEN
- BOI
1 stop6h 25m
Frontier
Thu 10/12:50 pm
BOI
- DEN
1 stop8h 54m
Frontier
Deal found 8/3![Frontier logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3010:50 pm
DEN
- BOI
1 stop15h 05m
Frontier
Mon 10/123:52 pm
BOI
- DEN
1 stop21h 52m
Frontier
Deal found 8/2![Frontier logo]()
$179
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 August 4, 2026.
Search for one-way flight options from Denver to Idaho. Find affordable one-way fares based on user searches. Data last updated August 4, 2026.
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 7/31![Frontier logo]()
$54
This Kiwi.com deal was found by Cheapflights users on 8/1. 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.
Wed 10/710:50 pm
DEN
- BOI
1 stop16h 07m
Frontier
Deal found 8/1![Frontier logo]()
$68
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.
Wed 10/2810:30 pm
DEN
- BOI
1 stop16h 27m
Frontier
Deal found 7/31![Frontier logo]()
$69
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 9/287:30 am
DEN
- BOI
1 stop6h 25m
Frontier
Deal found 7/31![Frontier logo]()
$79
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.
Wed 9/3010:50 pm
DEN
- BOI
1 stop15h 05m
Frontier
Deal found 7/31![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 10/17:30 am
DEN
- BOI
1 stop6h 25m
Frontier
Deal found 8/3![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.
Wed 9/96:38 pm
DEN
- BOI
1 stop19h 17m
Frontier
Deal found 7/31![Frontier logo]()
$86
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.
Mon 10/269:59 am
DEN
- BOI
1 stop4h 58m
Frontier
Deal found 7/30![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/217:30 am
DEN
- BOI
1 stop6h 25m
Frontier
Deal found 8/1![Frontier logo]()
$92
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.
Wed 10/287:08 pm
DEN
- GEG
1 stop24h 30m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$100
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.
Wed 9/3010:50 pm
DEN
- GEG
1 stop17h 44m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2910:49 pm
DEN
- GEG
1 stop11h 33m
Multiple Airlines
Deal found 8/2![Multiple Airlines logo]()
$114
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 August 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $173 (Expedia) |
One-way from | $54 (Frontier) |
Popular in | July |
Cheapest in | February |
Average price | $273 |
Good round-trip deal | $214 or less |
Good one-way deal | $170 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 August 4, 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
DenverBoise
DEN - BOI
DENBOI
Denver Intl
Tue 8/25
8:22 am-3:31 pm
1 stop7h 09m
Boise Air Term. Gowen Fld
Mon 8/31
6:00 am-11:07 am
1 stop5h 07m
$217
DenverBoise
DEN - BOI
DENBOI
Denver Intl
Fri 9/4
7:40 am-9:35 am
Nonstop1h 55m
Boise Air Term. Gowen Fld
Sun 9/6
10:31 am-12:33 pm
Nonstop2h 02m
$252
DenverBoise
DEN - BOI
DENBOI
Denver Intl
Thu 9/24
8:08 am-1:14 pm
1 stop5h 06m
Boise Air Term. Gowen Fld
Tue 9/29
6:49 pm-9:13 pm
1 stop26h 24m
$256
Quickest round-trip
DenverWest Yellowstone
DEN - WYS
DENWYS
Denver Intl
Fri 9/11
11:24 am-1:20 pm
Nonstop1h 56m
West Yellowstone
Fri 9/18
6:00 pm-7:45 pm
Nonstop1h 45m
$263
DenverBoise
DEN - BOI
DENBOI
Denver Intl
Sat 9/5
1:25 pm-9:00 pm
2 stops7h 35m
Boise Air Term. Gowen Fld
Tue 9/8
6:25 am-2:00 pm
2 stops7h 35m
$273
DenverIdaho Falls
DEN - IDA
DENIDA
Denver Intl
Wed 11/4
7:15 am-12:22 pm
1 stop5h 07m
Idaho Falls Fanning Field
Sat 11/7
6:00 am-9:44 am
1 stop3h 44m
$279
DenverWest Yellowstone
DEN - WYS
DENWYS
Denver Intl
Fri 8/21
11:24 am-1:20 pm
Nonstop1h 56m
West Yellowstone
Mon 8/24
1:55 pm-3:40 pm
Nonstop1h 45m
$286
DenverBoise
DEN - BOI
DENBOI
Denver Intl
Thu 9/3
9:00 am-3:15 pm
1 stop6h 15m
Boise Air Term. Gowen Fld
Sun 9/6
6:20 am-1:50 pm
2 stops7h 30m
$287
DenverBoise
DEN - BOI
DENBOI
Denver Intl
Sat 9/12
6:17 am-8:20 pm
1 stop14h 03m
Boise Air Term. Gowen Fld
Sat 9/19
6:23 am-9:13 pm
2 stops14h 50m
$288
DenverBoise
DEN - BOI
DENBOI
Denver Intl
Sat 10/17
8:25 pm-10:33 pm
Nonstop2h 08m
Boise Air Term. Gowen Fld
Mon 10/19
10:30 am-12:28 pm
Nonstop1h 58m
$289
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-IDA
DEN-GEG
DEN-TWF
DEN-WYS
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-IDA
DEN-GEG
DEN-TWF
What is the cheapest month to book a flight from Denver to Idaho?
Currently, February is the cheapest month in which you can book a flight from Denver to Idaho (average of $192). Flying from Denver to Idaho in June is currently the most expensive (average of $348). 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 August 4, 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 16% 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 August 4, 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 (8 on average).
How much does it cost to fly round-trip from Denver to Idaho?
Airfare is typical for this route at the moment.
Denver to Idaho flights typically cost between $169 and $359 in August.The cheapest round-trip price found within the last 5 days was $173 on Frontier (Aug 30-Sep 6).
How far ahead should I book a flight from Denver to Idaho?
Booking 80 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 August 1, 2026.
Travelers seeking maximum savings on their Denver to Idaho flight should consider departing on Thursday mornings when fares are most often at their lowest. Thursday at noon 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 August 4, 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.
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
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 August 4, 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 4 airlines flying from Denver to Idaho
Discover the top 4 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 August 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$54 | Average$129 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$68 | Average$309 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$176 | Average$368 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$189 | Average$331 | FlexibilityNo cancel fee | On-time63% |