$51+ 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
Jun 24 — Jul 11
Round-trip
1 adult, Economy
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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 May 25, 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 May 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/301:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Sun 7/510:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 5/20![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/141:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Thu 7/1610:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 5/21![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/161:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Tue 6/2310:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Deal found 5/23![Frontier logo]()
$188
This Frontier deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 7/301:25 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Tue 8/410:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 5/20![Frontier logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 7/51:25 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Thu 7/910:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 5/20![Frontier logo]()
$201
This Frontier deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:59 pm
BOI
- DEN
Nonstop2h 01m
Frontier
Tue 9/229:55 am
DEN
- BOI
Nonstop2h 09m
Frontier
Deal found 5/24![Frontier logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/301:25 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Sun 8/210:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 5/20![Frontier logo]()
$205
This Travelocity deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/301:25 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Tue 8/46:02 am
DEN
- BOI
1 stop8h 05m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/141:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Sat 7/186:02 am
DEN
- BOI
1 stop6h 45m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/141:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Thu 7/166:02 am
DEN
- BOI
1 stop8h 05m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/1510:56 pm
IDA
- DEN
1 stop22h 46m
Multiple Airlines
Mon 6/2210:25 am
DEN
- IDA
1 stop5h 43m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1712:31 pm
GEG
- DEN
Nonstop2h 35m
Frontier
Wed 6/2410:11 am
DEN
- GEG
Nonstop2h 25m
Frontier
Deal found 5/20![Frontier logo]()
$245
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 May 25, 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 May 25, 2026.
This United Airlines deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:04 pm
IDA
- DEN
Nonstop1h 54m
United Airlines
Sat 9/121:39 pm
DEN
- IDA
Nonstop1h 44m
United Airlines
Deal found 5/22![United Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/136:00 am
IDA
- DEN
1 stop3h 18m
Delta
Sat 6/2012:45 pm
DEN
- IDA
1 stop5h 36m
Delta
Deal found 5/23![Delta logo]()
$269
This Alaska Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:00 pm
BOI
- DEN
1 stop14h 33m
Alaska Airlines
Wed 8/56:02 am
DEN
- BOI
1 stop6h 45m
Alaska Airlines
Deal found 5/21![Alaska Airlines logo]()
$270
This Southwest deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/82:05 pm
BOI
- DEN
1 stop6h 10m
Southwest
Sat 7/117:45 am
DEN
- BOI
Nonstop2h 00m
Southwest
Deal found 5/25![Southwest logo]()
$330
This United Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/42:30 pm
IDA
- DEN
Nonstop1h 48m
United Airlines
Sun 6/78:05 am
DEN
- IDA
Nonstop1h 45m
United Airlines
Deal found 5/20![United Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/106:00 am
BOI
- DEN
1 stop3h 12m
Delta
Mon 7/137:09 pm
DEN
- BOI
1 stop4h 56m
Delta
Deal found 5/22![Delta logo]()
$308
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 7/156:00 am
BOI
- DEN
1 stop3h 12m
Delta
Mon 7/207:09 pm
DEN
- BOI
1 stop4h 56m
Delta
Deal found 5/20![Delta logo]()
$310
This United Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/194:04 pm
IDA
- DEN
Nonstop1h 54m
United Airlines
Sat 8/221:39 pm
DEN
- IDA
Nonstop1h 44m
United Airlines
Deal found 5/20![United Airlines logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/238:15 am
GEG
- DEN
1 stop10h 03m
Alaska Airlines
Tue 7/288:40 am
DEN
- GEG
1 stop4h 49m
Alaska Airlines
Deal found 5/25![Alaska Airlines logo]()
$356
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/307:25 am
BOI
- DEN
1 stop4h 28m
Delta
Sun 7/53:55 pm
DEN
- BOI
1 stop6h 10m
Delta
Deal found 5/20![Delta logo]()
$310
This Southwest deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/155:15 pm
GEG
- DEN
1 stop4h 55m
Southwest
Mon 7/2710:05 pm
DEN
- GEG
Nonstop2h 25m
Southwest
Deal found 5/22![Southwest logo]()
$376
This United Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/144:04 pm
IDA
- DEN
Nonstop1h 54m
United Airlines
Wed 9/161:39 pm
DEN
- IDA
Nonstop1h 44m
United Airlines
Deal found 5/25![United Airlines logo]()
$337
This Alaska Airlines deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:21 am
SUN
- DEN
1 stop7h 49m
Alaska Airlines
Thu 9/105:41 pm
DEN
- SUN
1 stop16h 05m
Alaska Airlines
Deal found 5/23![Alaska Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:44 pm
BOI
- DEN
1 stop4h 06m
Delta
Sun 8/236:18 pm
DEN
- BOI
1 stop3h 50m
Delta
Deal found 5/22![Delta logo]()
$318
This Southwest deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/255:10 pm
GEG
- DEN
1 stop6h 30m
Southwest
Mon 6/299:10 pm
DEN
- GEG
1 stop5h 10m
Southwest
Deal found 5/24![Southwest logo]()
$397
This United Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 7/16:30 am
BOI
- DEN
Nonstop1h 59m
United Airlines
Tue 7/78:25 pm
DEN
- BOI
Nonstop2h 12m
United Airlines
Deal found 5/21![United Airlines logo]()
$343
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/295:59 pm
BOI
- DEN
1 stop4h 42m
Delta
Sun 7/53:55 pm
DEN
- BOI
1 stop6h 10m
Delta
Deal found 5/20![Delta logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:44 pm
GEG
- DEN
1 stop5h 15m
Alaska Airlines
Mon 8/176:15 pm
DEN
- GEG
1 stop5h 21m
Alaska Airlines
Deal found 5/24![Alaska Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 6/295:10 pm
GEG
- DEN
1 stop6h 30m
Southwest
Sat 7/41:25 pm
DEN
- GEG
2 stops7h 40m
Southwest
Deal found 5/21![Southwest logo]()
$402
This United Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/282:25 pm
IDA
- DEN
Nonstop1h 50m
United Airlines
Sun 8/301:39 pm
DEN
- IDA
Nonstop1h 44m
United Airlines
Deal found 5/25![United Airlines logo]()
$347
This Delta deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 7/236:42 pm
BOI
- DEN
1 stop3h 58m
Delta
Sun 7/267:09 pm
DEN
- BOI
1 stop4h 56m
Delta
Deal found 5/21![Delta logo]()
$327
This Southwest deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 7/249:50 am
GEG
- DEN
2 stops7h 30m
Southwest
Mon 7/278:00 am
DEN
- GEG
1 stop5h 20m
Southwest
Deal found 5/20![Southwest logo]()
$412
This United Airlines deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 7/162:30 pm
IDA
- DEN
Nonstop1h 48m
United Airlines
Tue 7/218:05 am
DEN
- IDA
Nonstop1h 45m
United Airlines
Deal found 5/21![United Airlines logo]()
$361
This Alaska Airlines deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/410:56 am
SUN
- DEN
1 stop6h 06m
Alaska Airlines
Sun 6/76:00 am
DEN
- SUN
1 stop28h 14m
Alaska Airlines
Deal found 5/23![Alaska Airlines logo]()
$444
This Southwest deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/171:30 pm
GEG
- DEN
1 stop6h 00m
Southwest
Sun 7/195:00 pm
DEN
- GEG
Nonstop2h 20m
Southwest
Deal found 5/24![Southwest logo]()
$427
This United Airlines deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/175:46 pm
BOI
- DEN
Nonstop1h 59m
United Airlines
Sun 6/217:45 am
DEN
- BOI
Nonstop2h 00m
United Airlines
Deal found 5/22![United Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 6/1612:35 pm
GEG
- DEN
Nonstop2h 15m
Southwest
Thu 6/189:10 pm
DEN
- GEG
1 stop5h 10m
Southwest
Deal found 5/21![Southwest logo]()
$428
This Delta deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 7/13:25 pm
TWF
- DEN
1 stop4h 39m
Delta
Tue 7/77:09 pm
DEN
- TWF
1 stop3h 08m
Delta
Deal found 5/21![Delta logo]()
$396
This Alaska Airlines deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/233:57 pm
IDA
- DEN
1 stop26h 35m
Alaska Airlines
Sat 9/261:43 pm
DEN
- IDA
2 stops9h 13m
Alaska Airlines
Deal found 5/22![Alaska Airlines logo]()
$485
This United Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/54:10 pm
IDA
- DEN
Nonstop1h 51m
United Airlines
Tue 6/98:05 am
DEN
- IDA
Nonstop1h 45m
United Airlines
Deal found 5/20![United Airlines logo]()
$379
Last-minute flights from Idaho to DenverDiscover last-minute flight deals from Idaho to Denver. Data last updated May 25, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Denver. Data last updated May 25, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/111:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Tue 6/1610:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Deal found 5/21![Frontier logo]()
$215
This United Airlines deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/135:54 pm
IDA
- DEN
Nonstop1h 51m
United Airlines
Sat 6/203:35 pm
DEN
- IDA
Nonstop1h 44m
United Airlines
Deal found 5/23![United Airlines logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/1510:56 pm
IDA
- DEN
1 stop22h 46m
Multiple Airlines
Mon 6/2210:25 am
DEN
- IDA
1 stop5h 43m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/161:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Tue 6/2310:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Deal found 5/23![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/161:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Thu 6/1810:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Deal found 5/22![Frontier logo]()
$233
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1712:31 pm
GEG
- DEN
Nonstop2h 35m
Frontier
Wed 6/2410:11 am
DEN
- GEG
Nonstop2h 25m
Frontier
Deal found 5/20![Frontier logo]()
$245
This Frontier deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/181:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Sun 6/2110:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Deal found 5/20![Frontier logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/181:25 pm
BOI
- DEN
Nonstop2h 23m
Multiple Airlines
Sat 6/206:02 am
DEN
- BOI
1 stop6h 45m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$257
This Frontier deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/211:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Thu 6/2510:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Deal found 5/21![Frontier logo]()
$258
This Kiwi.com deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” 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 6/211:25 pm
BOI
- DEN
Nonstop2h 23m
Multiple Airlines
Wed 6/246:02 am
DEN
- BOI
1 stop6h 45m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/251:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Sun 6/2810:29 am
DEN
- BOI
Nonstop2h 01m
Frontier
Deal found 5/20![Frontier logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/301:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Sun 7/510:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 5/20![Frontier logo]()
$169
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 May 25, 2026.
Search for one-way flight options from Idaho to Denver. Find affordable one-way fares based on user searches. Data last updated May 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/281:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 5/21![Frontier logo]()
$51
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/161:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Deal found 5/20![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/201:04 pm
BOI
- DEN
Nonstop2h 05m
Frontier
Deal found 5/22![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:04 pm
BOI
- DEN
Nonstop2h 05m
Frontier
Deal found 5/21![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/251:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Deal found 5/20![Frontier logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/231:25 pm
BOI
- DEN
Nonstop2h 23m
Frontier
Deal found 5/24![Frontier logo]()
$96
This Frontier deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/41:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 5/25![Frontier logo]()
$98
This Kiwi.com deal was found by Cheapflights users on 5/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/161:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 5/21![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 5/23![Frontier logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:28 pm
GEG
- DEN
Nonstop2h 24m
Frontier
Deal found 5/25![Frontier logo]()
$123
This Frontier deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1712:31 pm
GEG
- DEN
Nonstop2h 35m
Frontier
Deal found 5/24![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/1910:56 pm
IDA
- DEN
1 stop25h 42m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$127
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 May 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $169 (Kiwi.com) |
One-way from | $51 (Kiwi.com) |
Popular in | April |
Cheapest in | October |
Average price | $307 |
Good round-trip deal | $384 or less |
Good one-way deal | $185 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 May 25, 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
Idaho FallsDenver
IDA - DEN
IDADEN
Idaho Falls Fanning Field
Sat 9/5
4:04 pm-5:58 pm
Nonstop1h 54m
Denver Intl
Sat 9/12
1:39 pm-3:23 pm
Nonstop1h 44m
$249
Idaho FallsDenver
IDA - DEN
IDADEN
Idaho Falls Fanning Field
Sat 6/13
6:00 am-9:18 am
1 stop3h 18m
Denver Intl
Sat 6/20
12:45 pm-6:21 pm
1 stop5h 36m
$269
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Mon 8/3
8:00 pm-10:33 am
1 stop14h 33m
Denver Intl
Wed 8/5
6:02 am-12:47 pm
1 stop6h 45m
$270
Quickest round-trip
Idaho FallsDenver
IDA - DEN
IDADEN
Idaho Falls Fanning Field
Thu 6/4
2:30 pm-4:18 pm
Nonstop1h 48m
Denver Intl
Sun 6/7
8:05 am-9:50 am
Nonstop1h 45m
$279
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Fri 7/10
6:00 am-9:12 am
1 stop3h 12m
Denver Intl
Mon 7/13
7:09 pm-12:05 am
1 stop4h 56m
$308
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Wed 7/15
6:00 am-9:12 am
1 stop3h 12m
Denver Intl
Mon 7/20
7:09 pm-12:05 am
1 stop4h 56m
$310
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Tue 6/30
7:25 am-11:53 am
1 stop4h 28m
Denver Intl
Sun 7/5
3:55 pm-10:05 pm
1 stop6h 10m
$310
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Thu 8/20
6:44 pm-10:50 pm
1 stop4h 06m
Denver Intl
Sun 8/23
6:18 pm-10:08 pm
1 stop3h 50m
$318
Idaho FallsDenver
IDA - DEN
IDADEN
Idaho Falls Fanning Field
Wed 8/19
4:04 pm-5:58 pm
Nonstop1h 54m
Denver Intl
Sat 8/22
1:39 pm-3:23 pm
Nonstop1h 44m
$319
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Mon 6/29
5:59 pm-10:41 pm
1 stop4h 42m
Denver Intl
Sun 7/5
3:55 pm-10:05 pm
1 stop6h 10m
$327
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
IDA-DEN
GEG-DEN
SUN-DEN
TWF-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
IDA-DEN
GEG-DEN
SUN-DEN
What is the cheapest month to book a flight from Idaho to Denver?
Currently, January is the cheapest month in which you can book a flight from Idaho to Denver (average of $26). Flying from Idaho to Denver in November is currently the most expensive (average of $75). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from ID to 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 May 25, 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 May 25, 2026.
The most flights from USID to DEN are scheduled on a Friday (19 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 on average).
How much does it cost to fly round-trip from Idaho to Denver?
How far ahead should I book a flight from Idaho to Denver?
To ensure you get the cheapest price possible for a flight from Idaho to Denver, you should look to book at least 50 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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
Centennial
Golden
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Fort Morgan
Glendale
Evergreen
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
Other flight options
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 May 25, 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 May 25, 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 May 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$54 | Average$131 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$80 | Average$84 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$104 | Average$360 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$154 | Average$273 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$171 | Average$323 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$189 | Average$302 | FlexibilityNo cancel fee | On-time63% |