$54+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — DEN
Aug 31 — Sep 71
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to Denver with Cheapflights
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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 August 1, 2026.
Explore the most affordable flight options available from Idaho to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:50 pm
BOI
- DEN
1 stop19h 17m
Frontier
Thu 9/172:29 pm
DEN
- BOI
2 stops23h 26m
Frontier
Deal found 7/31![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:50 pm
BOI
- DEN
1 stop8h 54m
Frontier
Mon 9/147:30 am
DEN
- BOI
1 stop6h 25m
Frontier
Deal found 7/27![Frontier logo]()
$201
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2812:55 pm
BOI
- DEN
Nonstop1h 50m
Southwest
Fri 10/301:15 pm
DEN
- BOI
Nonstop1h 55m
Southwest
Deal found 7/29![Southwest logo]()
$202
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.
Sun 10/42:50 pm
BOI
- DEN
2 stops32h 58m
Frontier
Thu 10/86:23 am
DEN
- BOI
1 stop8h 34m
Frontier
Deal found 7/31![Frontier logo]()
$203
This Priceline deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Mon 8/248:08 am
DEN
- BOI
1 stop5h 13m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$204
This Southwest deal was found by Cheapflights users on 7/30. 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 8/223:25 pm
BOI
- DEN
1 stop4h 45m
Southwest
Wed 8/261:00 pm
DEN
- BOI
Nonstop1h 50m
Southwest
Deal found 7/30![Southwest logo]()
$207
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:05 am
BOI
- DEN
2 stops6h 30m
Southwest
Thu 9/32:20 pm
DEN
- BOI
Nonstop1h 55m
Southwest
Deal found 7/30![Southwest logo]()
$208
This Frontier deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Thu 8/209:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 7/30![Frontier logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/172:50 pm
BOI
- DEN
1 stop8h 54m
Frontier
Sun 9/2010:50 pm
DEN
- BOI
1 stop15h 05m
Frontier
Deal found 7/31![Frontier logo]()
$211
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:30 am
BOI
- DEN
Nonstop1h 50m
Southwest
Tue 8/253:50 pm
DEN
- BOI
2 stops6h 25m
Southwest
Deal found 7/29![Southwest logo]()
$212
This Priceline deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Sun 8/308:08 am
DEN
- BOI
1 stop5h 13m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/223:52 pm
BOI
- DEN
1 stop8h 23m
Frontier
Wed 10/2810:32 pm
DEN
- BOI
2 stops40h 25m
Frontier
Deal found 7/28![Frontier logo]()
$214
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 August 1, 2026.
Discover carefully curated flight deals from Idaho to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 1, 2026.
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:15 am
BOI
- DEN
1 stop4h 25m
Southwest
Sun 9/69:00 am
DEN
- BOI
Nonstop1h 50m
Southwest
Deal found 7/31![Southwest logo]()
$207
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 9/307:20 am
BOI
- DEN
1 stop13h 53m
Alaska Airlines
Sat 10/37:07 am
DEN
- BOI
1 stop7h 04m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$260
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:30 am
BOI
- DEN
Nonstop2h 01m
United Airlines
Wed 8/264:00 pm
DEN
- BOI
Nonstop1h 58m
United Airlines
Deal found 7/27![United Airlines logo]()
$272
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/46:56 pm
IDA
- DEN
1 stop4h 04m
Delta
Mon 12/76:10 pm
DEN
- IDA
1 stop3h 52m
Delta
Deal found 7/28![Delta logo]()
$279
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/233:40 pm
BOI
- DEN
1 stop5h 45m
Southwest
Mon 9/284:10 pm
DEN
- BOI
2 stops6h 45m
Southwest
Deal found 7/29![Southwest logo]()
$222
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:05 am
BOI
- DEN
2 stops7h 40m
Southwest
Thu 9/176:25 am
DEN
- BOI
1 stop6h 50m
Southwest
Deal found 7/29![Southwest logo]()
$222
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Wed 8/194:04 pm
IDA
- DEN
Nonstop1h 54m
United Airlines
Sat 8/2211:50 am
DEN
- IDA
Nonstop1h 39m
United Airlines
Deal found 7/31![United Airlines logo]()
$274
This Alaska Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/158:03 am
BOI
- DEN
2 stops13h 10m
Alaska Airlines
Thu 9/175:41 pm
DEN
- BOI
1 stop6h 03m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$290
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:00 am
IDA
- DEN
1 stop3h 14m
Delta
Mon 8/316:28 pm
DEN
- IDA
1 stop4h 04m
Delta
Deal found 7/29![Delta logo]()
$299
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:44 pm
BOI
- DEN
Nonstop2h 01m
United Airlines
Thu 8/208:32 pm
DEN
- BOI
Nonstop2h 08m
United Airlines
Deal found 7/27![United Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:15 pm
BOI
- DEN
1 stop7h 25m
Southwest
Fri 10/165:55 am
DEN
- BOI
1 stop5h 25m
Southwest
Deal found 7/28![Southwest logo]()
$272
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:30 am
BOI
- DEN
Nonstop2h 01m
United Airlines
Mon 8/318:32 pm
DEN
- BOI
Nonstop2h 08m
United Airlines
Deal found 7/28![United Airlines logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:19 am
GEG
- DEN
1 stop13h 53m
Alaska Airlines
Wed 11/41:55 pm
DEN
- GEG
2 stops10h 01m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$313
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/225:00 am
BOI
- DEN
Nonstop2h 10m
United Airlines
Mon 8/247:37 pm
DEN
- BOI
Nonstop2h 00m
United Airlines
Deal found 7/27![United Airlines logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:07 am
GEG
- DEN
2 stops11h 54m
Alaska Airlines
Sat 10/319:45 am
DEN
- GEG
1 stop12h 55m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2410:00 am
GEG
- DEN
1 stop4h 09m
Delta
Mon 12/285:35 am
DEN
- GEG
1 stop4h 56m
Delta
Deal found 7/27![Delta logo]()
$362
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/272:25 pm
IDA
- DEN
Nonstop1h 50m
United Airlines
Sat 8/298:05 am
DEN
- IDA
Nonstop1h 46m
United Airlines
Deal found 7/28![United Airlines logo]()
$279
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/292:15 pm
GEG
- DEN
1 stop7h 30m
Southwest
Sat 9/51:20 pm
DEN
- GEG
Nonstop2h 20m
Southwest
Deal found 7/31![Southwest logo]()
$318
This Alaska Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/282:02 pm
GEG
- DEN
2 stops21h 18m
Alaska Airlines
Fri 9/46:17 am
DEN
- GEG
1 stop17h 32m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$327
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2511:44 am
PIH
- DEN
1 stop3h 25m
Delta
Fri 1/15:35 am
DEN
- PIH
1 stop4h 56m
Delta
Deal found 7/29![Delta logo]()
$362
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.
Mon 9/145:40 pm
BOI
- DEN
Nonstop2h 01m
United Airlines
Thu 9/177:45 pm
DEN
- BOI
Nonstop2h 00m
United Airlines
Deal found 7/31![United Airlines logo]()
$289
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:55 am
GEG
- DEN
Nonstop2h 15m
Southwest
Sat 10/319:10 am
DEN
- GEG
1 stop5h 15m
Southwest
Deal found 7/31![Southwest logo]()
$329
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.
Tue 12/86:04 am
PIH
- DEN
1 stop3h 35m
Delta
Fri 12/115:25 am
DEN
- PIH
1 stop5h 06m
Delta
Deal found 7/30![Delta logo]()
$373
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:00 am
IDA
- DEN
Nonstop1h 55m
United Airlines
Sun 8/168:05 am
DEN
- IDA
Nonstop1h 46m
United Airlines
Deal found 7/27![United Airlines logo]()
$289
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.
Fri 10/97:19 am
GEG
- DEN
1 stop27h 13m
Alaska Airlines
Sun 10/116:59 pm
DEN
- GEG
2 stops17h 47m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/165:45 am
GEG
- DEN
2 stops8h 00m
Southwest
Tue 9/229:00 am
DEN
- GEG
2 stops7h 05m
Southwest
Deal found 7/29![Southwest logo]()
$338
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:00 am
GEG
- DEN
Nonstop2h 22m
United Airlines
Tue 9/1511:15 am
DEN
- GEG
Nonstop2h 20m
United Airlines
Deal found 7/29![United Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:16 am
TWF
- DEN
1 stop5h 31m
Delta
Sat 8/226:28 pm
DEN
- TWF
1 stop3h 50m
Delta
Deal found 7/28![Delta logo]()
$396
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:00 am
GEG
- DEN
1 stop8h 35m
Southwest
Mon 8/248:40 pm
DEN
- GEG
Nonstop2h 20m
Southwest
Deal found 7/29![Southwest logo]()
$350
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/214:04 pm
IDA
- DEN
Nonstop1h 54m
United Airlines
Sat 9/261:40 pm
DEN
- IDA
Nonstop1h 44m
United Airlines
Deal found 7/27![United Airlines logo]()
$297
Last-minute flights from Idaho to DenverDiscover last-minute flight deals from Idaho to Denver. Data last updated August 1, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Denver. Data last updated August 1, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Thu 8/209:29 am
DEN
- BOI
Nonstop2h 00m
Frontier
Deal found 7/30![Frontier logo]()
$210
This 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.
Wed 8/194:04 pm
IDA
- DEN
Nonstop1h 54m
United Airlines
Sat 8/2211:50 am
DEN
- IDA
Nonstop1h 39m
United Airlines
Deal found 7/31![United Airlines logo]()
$274
This Priceline deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Mon 8/248:08 am
DEN
- BOI
1 stop5h 13m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$204
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/202:55 pm
BOI
- DEN
Nonstop1h 50m
Southwest
Mon 8/246:40 am
DEN
- BOI
2 stops8h 35m
Southwest
Deal found 7/29![Southwest logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/214:28 pm
BOI
- DEN
1 stop5h 18m
Multiple Airlines
Tue 8/2510:29 am
DEN
- BOI
Nonstop2h 00m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$221
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 8/223:25 pm
BOI
- DEN
1 stop4h 45m
Southwest
Wed 8/261:00 pm
DEN
- BOI
Nonstop1h 50m
Southwest
Deal found 7/30![Southwest logo]()
$207
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:05 am
BOI
- DEN
2 stops6h 30m
Southwest
Thu 9/32:20 pm
DEN
- BOI
Nonstop1h 55m
Southwest
Deal found 7/30![Southwest logo]()
$208
This Priceline deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:24 pm
BOI
- DEN
Nonstop2h 06m
Multiple Airlines
Sun 8/308:08 am
DEN
- BOI
1 stop5h 13m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$213
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:00 am
BOI
- DEN
1 stop3h 14m
Delta
Tue 9/16:28 pm
DEN
- BOI
1 stop3h 31m
Delta
Deal found 7/28![Delta logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:09 pm
IDA
- DEN
1 stop17h 24m
Multiple Airlines
Sun 8/306:45 am
DEN
- IDA
1 stop12h 19m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$245
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 8/284:04 pm
IDA
- DEN
Nonstop1h 54m
United Airlines
Sun 8/3011:50 am
DEN
- IDA
Nonstop1h 39m
United Airlines
Deal found 7/30![United Airlines logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:00 am
BOI
- DEN
1 stop5h 07m
Multiple Airlines
Tue 9/110:29 am
DEN
- BOI
Nonstop2h 00m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$220
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 August 1, 2026.
Search for one-way flight options from Idaho to Denver. Find affordable one-way fares based on user searches. Data last updated August 1, 2026.
This Booking.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 7/27![Frontier logo]()
$54
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.
Tue 9/81:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 7/31![Frontier logo]()
$57
This Frontier deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 7/28![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:50 pm
BOI
- DEN
1 stop21h 56m
Frontier
Deal found 7/30![Frontier logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:50 pm
BOI
- DEN
1 stop21h 56m
Frontier
Deal found 7/31![Frontier logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:50 pm
BOI
- DEN
1 stop8h 54m
Frontier
Deal found 7/31![Frontier logo]()
$91
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.
Thu 10/293:52 pm
BOI
- DEN
1 stop8h 23m
Frontier
Deal found 7/30![Frontier logo]()
$92
This Expedia deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:50 pm
BOI
- DEN
1 stop19h 17m
Frontier
Deal found 7/30![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1710:54 pm
IDA
- DEN
1 stop19h 06m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$97
This 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.
Tue 9/11:24 pm
BOI
- DEN
Nonstop2h 06m
Frontier
Deal found 7/31![Frontier logo]()
$98
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 10/297:28 pm
GEG
- DEN
1 stop22h 12m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$106
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3010:12 am
GEG
- DEN
1 stop16h 36m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$110
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 August 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $200 (Kiwi.com) |
One-way from | $54 (Booking.com) |
Popular in | April |
Cheapest in | October |
Average price | $250 |
Good round-trip deal | $345 or less |
Good one-way deal | $206 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 August 1, 2026.
Use the filters below to find and compare flights from Idaho to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Sat 9/5
7:15 am-11:40 am
1 stop4h 25m
Denver Intl
Sun 9/6
9:00 am-10:50 am
Nonstop1h 50m
$207
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Wed 9/23
3:40 pm-9:25 pm
1 stop5h 45m
Denver Intl
Mon 9/28
4:10 pm-10:55 pm
2 stops6h 45m
$222
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Tue 9/15
7:05 am-2:45 pm
2 stops7h 40m
Denver Intl
Thu 9/17
6:25 am-1:15 pm
1 stop6h 50m
$222
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Wed 9/30
7:20 am-9:13 pm
1 stop13h 53m
Denver Intl
Sat 10/3
7:07 am-2:11 pm
1 stop7h 04m
$260
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Wed 8/26
6:30 am-8:31 am
Nonstop2h 01m
Denver Intl
Wed 8/26
4:00 pm-5:58 pm
Nonstop1h 58m
$272
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Thu 10/15
5:15 pm-12:40 am
1 stop7h 25m
Denver Intl
Fri 10/16
5:55 am-11:20 am
1 stop5h 25m
$272
Quickest round-trip
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
11:50 am-1:29 pm
Nonstop1h 39m
$274
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Mon 8/17
5:44 pm-7:45 pm
Nonstop2h 01m
Denver Intl
Thu 8/20
8:32 pm-10:40 pm
Nonstop2h 08m
$277
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Thu 8/27
6:30 am-8:31 am
Nonstop2h 01m
Denver Intl
Mon 8/31
8:32 pm-10:40 pm
Nonstop2h 08m
$277
BoiseDenver
BOI - DEN
BOIDEN
Boise Air Term. Gowen Fld
Sat 8/22
5:00 am-7:10 am
Nonstop2h 10m
Denver Intl
Mon 8/24
7:37 pm-9:37 pm
Nonstop2h 00m
$277
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
LWS-DEN
PIH-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
LWS-DEN
What is the cheapest month to book a flight from Idaho to Denver?
Currently, October is the cheapest month in which you can book a flight from Idaho to Denver (average of $226). Flying from Idaho to Denver in July is currently the most expensive (average of $339). 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 August 1, 2026.
When flying from Idaho to Denver, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 46% 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 August 1, 2026.
The most flights from USID to DEN are scheduled on a Friday (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 Idaho to Denver?
Airfare is typical for this route at the moment.
Idaho to Denver flights typically cost between $167 and $326 in September.The cheapest round-trip price found within the last 5 days was $200 on Frontier (Sep 14-Sep 17).
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 62 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
Westminster
Black Hawk
Centennial
Lakewood
Broomfield
Golden
Lone Tree
Wheat Ridge
Silverthorne
Greeley
Central City
Fort Morgan
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
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
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Popular flights
Top destinations
Alternative routes for Idaho to Denver
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.
Other flights to Denver
Explore flights to Denver departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 1, 2026.
Search flights from Idaho to Denver by cabin class
Find flights from Idaho to Denver, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Idaho and Denver flights
Browse other Idaho and Denver flight options. Last updated on August 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Idaho to Denver flights
Consider these flights traveling from Idaho to Denver.
Top 4 airlines flying from Idaho to Denver
Discover the top 4 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 August 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$53 | Average$150 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$145 | Average$374 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$184 | Average$346 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$197 | Average$322 | FlexibilityNo cancel fee | On-time63% |