$95+ Cheap flights from Colorado to Boise (BOI)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
Oct 9 — Oct 161
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Colorado to Boise with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Colorado to Boise
Cheapest
Best
Last-minute
One-way
Cheapest flights from Colorado to BoiseExplore the most affordable flight options available from Colorado to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
Explore the most affordable flight options available from Colorado to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 9/307:40 am -
Nonstop1h 54m
Mon 10/55:30 pm -
Nonstop2h 01m
Deal found 9/8![United Airlines logo]()
$197
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 11/57:15 am -
1 stop6h 05m
Mon 11/911:15 am -
Nonstop1h 50m
Deal found 9/7![Southwest logo]()
$207
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 10/67:40 am -
Nonstop1h 54m
Tue 10/135:30 pm -
Nonstop2h 01m
Deal found 9/8![United Airlines logo]()
$210
This Expedia deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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.
Fri 10/237:00 am -
1 stop6h 55m
Mon 10/262:50 pm -
1 stop21h 52m
Deal found 9/8![Frontier logo]()
$214
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 10/66:35 am -
1 stop6h 40m
Tue 10/131:25 pm -
1 stop8h 00m
Deal found 9/8![Southwest logo]()
$217
This Priceline deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” 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 11/211:03 pm -
1 stop5h 57m
Thu 11/266:33 am -
1 stop7h 25m
Deal found 9/9![Multiple Airlines logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3010:50 pm -
1 stop15h 05m
Mon 10/52:50 pm -
2 stops42h 42m
Deal found 9/4![Frontier logo]()
$229
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/64:00 pm -
2 stops7h 15m
Mon 10/126:50 pm -
2 stops13h 25m
Deal found 9/7![Southwest logo]()
$233
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/58:55 pm -
1 stop4h 50m
Mon 10/127:45 pm -
1 stop4h 30m
Deal found 9/7![Southwest logo]()
$309
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 11/55:00 am -
1 stop4h 50m
Mon 11/911:15 am -
2 stops7h 50m
Deal found 9/7![Southwest logo]()
$314
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 10/98:55 pm -
1 stop4h 50m
Mon 10/127:45 pm -
1 stop4h 30m
Deal found 9/8![Southwest logo]()
$328
This American Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:00 am -
1 stop7h 23m
Sun 11/86:14 pm -
1 stop6h 16m
Deal found 9/6![American Airlines logo]()
$334
Best flights from Colorado to BoiseDiscover carefully curated flight deals from Colorado to Boise that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
Discover carefully curated flight deals from Colorado to Boise that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 10/66:35 am -
1 stop6h 40m
Tue 10/131:25 pm -
1 stop8h 00m
Deal found 9/8![Southwest logo]()
$217
This Delta deal was found by Cheapflights users on 9/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:00 am -
1 stop5h 33m
Mon 11/166:40 am -
1 stop5h 37m
Deal found 9/4![Delta logo]()
$263
This Alaska Airlines deal was found by Cheapflights users on 9/4. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/191:55 pm -
1 stop8h 36m
Tue 12/18:56 am -
1 stop9h 16m
Deal found 9/4![Alaska Airlines logo]()
$327
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/45:30 am -
1 stop4h 04m
Mon 10/55:30 pm -
1 stop3h 54m
Deal found 9/5![United Airlines logo]()
$377
This American Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:01 pm -
1 stop5h 02m
Sun 10/46:30 am -
1 stop4h 57m
Deal found 9/5![American Airlines logo]()
$388
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 9/249:00 am -
Nonstop1h 50m
Tue 10/131:25 pm -
1 stop8h 00m
Deal found 9/8![Southwest logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 11/108:20 am -
2 stops13h 13m
Wed 11/118:20 am -
1 stop5h 38m
Deal found 9/7![Alaska Airlines logo]()
$356
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/108:50 am -
Nonstop1h 55m
Mon 10/123:50 pm -
Nonstop1h 50m
Deal found 9/7![Southwest logo]()
$327
This Delta deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” 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 10/236:07 pm -
1 stop5h 52m
Sun 10/256:49 pm -
1 stop3h 33m
Deal found 9/6![Delta logo]()
$377
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 12/58:35 am -
1 stop4h 58m
Wed 12/92:48 pm -
1 stop6h 35m
Deal found 9/8![United Airlines logo]()
$389
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 10/98:55 pm -
1 stop4h 50m
Mon 10/127:45 pm -
1 stop4h 30m
Deal found 9/8![Southwest logo]()
$328
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 10/247:05 am -
1 stop6h 33m
Tue 10/272:51 pm -
1 stop5h 43m
Deal found 9/8![United Airlines logo]()
$399
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” 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 10/214:25 pm -
1 stop6h 05m
Wed 10/2812:55 pm -
Nonstop1h 50m
Deal found 9/6![Southwest logo]()
$337
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/71:47 pm -
1 stop4h 16m
Wed 11/112:51 pm -
1 stop7h 08m
Deal found 9/8![United Airlines logo]()
$399
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/228:55 pm -
Nonstop2h 05m
Thu 10/295:40 am -
1 stop5h 05m
Deal found 9/7![Southwest logo]()
$337
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 1/73:20 pm -
1 stop6h 15m
Mon 1/112:45 pm -
1 stop5h 48m
Deal found 9/7![United Airlines logo]()
$400
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” 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 10/175:40 am -
1 stop4h 50m
Tue 10/206:35 am -
1 stop5h 25m
Deal found 9/6![Southwest logo]()
$347
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 11/55:00 am -
2 stops8h 20m
Mon 11/911:15 am -
2 stops7h 50m
Deal found 9/7![Southwest logo]()
$348
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 11/118:40 am -
1 stop5h 05m
Thu 11/195:00 am -
1 stop3h 43m
Deal found 9/5![United Airlines logo]()
$447
This Southwest deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 10/55:55 am -
2 stops7h 25m
Fri 10/95:15 pm -
1 stop7h 30m
Deal found 9/5![Southwest logo]()
$352
This Alaska Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 2/261:15 pm -
2 stops10h 56m
Tue 3/22:00 pm -
1 stop26h 46m
Deal found 9/5![Alaska Airlines logo]()
$648
This Southwest deal was found by Cheapflights users on 9/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/293:10 pm -
2 stops7h 20m
Tue 10/62:25 pm -
1 stop7h 30m
Deal found 9/4![Southwest logo]()
$353
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” 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 10/153:20 pm -
1 stop6h 15m
Wed 10/215:00 am -
1 stop3h 59m
Deal found 9/9![United Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 10/236:05 pm -
1 stop4h 28m
Tue 10/272:51 pm -
1 stop3h 36m
Deal found 9/8![United Airlines logo]()
$539
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/85:30 am -
1 stop4h 04m
Sun 10/116:25 am -
1 stop4h 19m
Deal found 9/7![United Airlines logo]()
$539
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 2/2611:30 am -
1 stop6h 25m
Tue 3/25:00 am -
1 stop5h 33m
Deal found 9/5![United Airlines logo]()
$547
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/75:30 am -
1 stop4h 04m
Wed 10/142:44 pm -
1 stop5h 46m
Deal found 9/7![United Airlines logo]()
$557
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 10/135:30 am -
1 stop4h 04m
Fri 10/2310:30 am -
1 stop7h 01m
Deal found 9/8![United Airlines logo]()
$557
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 12/123:28 pm -
1 stop6h 15m
Tue 12/152:48 pm -
1 stop5h 54m
Deal found 9/8![United Airlines logo]()
$567
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/77:05 am -
1 stop6h 33m
Wed 10/1410:30 am -
1 stop4h 04m
Deal found 9/7![United Airlines logo]()
$588
Last-minute flights from Colorado to BoiseDiscover last-minute flight deals from Colorado to Boise. Data last updated September 9, 2026 and is based on user searches.
Discover last-minute flight deals from Colorado to Boise. Data last updated September 9, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 9/247:30 am -
1 stop6h 25m
Mon 9/282:50 pm -
1 stop8h 54m
Deal found 9/5![Frontier logo]()
$241
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 9/307:40 am -
Nonstop1h 54m
Mon 10/55:30 pm -
Nonstop2h 01m
Deal found 9/8![United Airlines logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3010:50 pm -
1 stop15h 05m
Mon 10/52:50 pm -
2 stops42h 42m
Deal found 9/4![Frontier logo]()
$229
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/58:55 pm -
1 stop4h 50m
Mon 10/127:45 pm -
1 stop4h 30m
Deal found 9/7![Southwest logo]()
$309
This Southwest deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” 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 10/65:55 am -
1 stop6h 20m
Tue 10/133:20 pm -
Nonstop1h 50m
Deal found 9/9![Southwest logo]()
$207
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 10/67:40 am -
Nonstop1h 54m
Tue 10/135:30 pm -
Nonstop2h 01m
Deal found 9/8![United Airlines logo]()
$210
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/64:00 pm -
2 stops7h 15m
Mon 10/126:50 pm -
2 stops13h 25m
Deal found 9/7![Southwest logo]()
$233
This Southwest deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 10/75:45 pm -
1 stop5h 30m
Wed 10/144:40 pm -
1 stop5h 05m
Deal found 9/5![Southwest logo]()
$347
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 10/98:55 pm -
1 stop4h 50m
Mon 10/127:45 pm -
1 stop4h 30m
Deal found 9/8![Southwest logo]()
$328
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” 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 10/175:40 am -
2 stops7h 15m
Tue 10/2012:55 pm -
2 stops8h 50m
Deal found 9/6![Southwest logo]()
$357
This American Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:33 pm -
1 stop5h 26m
Sun 10/252:02 pm -
1 stop7h 19m
Deal found 9/8![American Airlines logo]()
$339
This Expedia deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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.
Fri 10/237:00 am -
1 stop6h 55m
Mon 10/262:50 pm -
1 stop21h 52m
Deal found 9/8![Frontier logo]()
$214
One-way flights from Colorado to BoiseSearch for one-way flight options from Colorado to Boise. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
Search for one-way flight options from Colorado to Boise. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
This Booking.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” 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.
Wed 10/710:49 pm -
1 stop15h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$95
This FlightHub deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/111:05 pm -
1 stop24h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$98
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/172:15 pm -
Nonstop2h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Southwest logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 11/310:55 pm -
2 stops38h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 12/71:00 pm -
1 stop5h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” 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 10/610:44 pm -
2 stops39h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$105
This Delta deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 10/107:15 am -
1 stop3h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Delta logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 12/210:29 pm -
1 stop19h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$110
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 10/76:05 am -
2 stops6h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Southwest logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 11/42:14 pm -
2 stops23h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$117
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/285:45 pm -
1 stop5h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Southwest logo]()
$155
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/185:30 am -
1 stop4h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![United Airlines logo]()
$194
Find flight deals from Colorado to Boise
Keep the following information in mind while searching for Colorado to Boise flight deals. Data was last updated September 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $197 (United Airlines) |
One-way from | $95 (Booking.com) |
Popular in | July |
Cheapest in | February |
Average price | $297 |
Good round-trip deal | $289 or less |
Good one-way deal | $163 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Colorado to Boise 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 7,457,451 searches. Data last updated September 9, 2026.
Use the filters below to find and compare flights from Colorado to Boise that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
DenverBoise
DEN Denver Intl - BOI Boise Air Term. Gowen Fld
DENBOI
Denver Intl
Sat 10/10
8:50 am-10:45 am
Nonstop1h 55m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$99
DenverBoise
DEN Denver Intl - BOI Boise Air Term. Gowen Fld
DENBOI
Denver Intl
Tue 12/8
9:00 am-11:00 am
Nonstop2h 00m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$99
DenverBoise
DEN Denver Intl - BOI Boise Air Term. Gowen Fld
DENBOI
Denver Intl
Wed 10/7
6:05 am-12:50 pm
2 stops6h 45m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$114
DenverBoise
DEN Denver Intl - BOI Boise Air Term. Gowen Fld
DENBOI
Denver Intl
Tue 10/27
6:05 am-12:50 pm
2 stops6h 45m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$114
DenverBoise
DEN Denver Intl - BOI Boise Air Term. Gowen Fld
DENBOI
Denver Intl
Sat 12/5
11:35 am-1:33 pm
Nonstop1h 58m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$139
DenverBoise
DEN Denver Intl - BOI Boise Air Term. Gowen Fld
DENBOI
Denver Intl
Mon 11/2
7:03 am-3:24 pm
1 stop8h 21m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$155
DenverBoise
DEN Denver Intl - BOI Boise Air Term. Gowen Fld
DENBOI
Denver Intl
Fri 11/6
7:33 am-12:57 pm
1 stop5h 24m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$155
Colorado SpringsBoise
COS Colorado Springs - BOI Boise Air Term. Gowen Fld
COSBOI
Colorado Springs
Wed 10/28
5:45 pm-11:15 pm
1 stop5h 30m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$155
DenverBoise
DEN Denver Intl - BOI Boise Air Term. Gowen Fld
DENBOI
Denver Intl
Sat 12/5
8:45 am-10:50 am
Nonstop2h 05m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$164
DenverBoise
DEN Denver Intl - BOI Boise Air Term. Gowen Fld
DENBOI
Denver Intl
Fri 11/6
2:05 pm-4:05 pm
Nonstop2h 00m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$164
Showing 1-10 of 53 resultsSorted by cheapest first
Best time to book a flight from Colorado to Boise
Have a flexible travel schedule? Discover the best time to fly to Boise from Colorado with our price prediction graph.
DEN-BOI
COS-BOI
GJT-BOI
GUC-BOI
HDN-BOI
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 Colorado to Boise
USCO-BOI
DEN-BOI
COS-BOI
GJT-BOI
GUC-BOI
What is the cheapest month to book a flight from Colorado to Boise?
Currently, February is the cheapest month in which you can book a flight from Colorado to Boise (average of $170). Flying from Colorado to Boise in July is currently the most expensive (average of $350). 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 CO to BOI?
Find hourly flight availability from Colorado to Boise. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 9, 2026.
When flying from Colorado to Boise, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 27% versus a flight at noon.
Weekly flight availability from Colorado to Boise
Explore weekly flight availability from Colorado to Boise. 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 September 9, 2026.
The most flights from USCO to BOI are scheduled on a Tuesday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from Colorado to Boise?
Airfare is below average for this route at the moment.
Colorado to Boise flights typically cost between $218 and $371 in September.The cheapest round-trip price found within the last 5 days was $197 on United Airlines (Sep 30-Oct 5).
How far ahead should I book a flight from Colorado to Boise?
Booking 80 days in advance of your planned departure date is, on average, the best time to get cheap flights from Colorado to Boise. 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 Colorado to Boise?
Use this chart to determine the cheapest time to fly round-trip from Colorado to Boise. Price data was last updated on September 5, 2026.
Travelers seeking maximum savings on their Colorado to Boise flight should consider departing on Thursday mornings when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Related info for your journey
Find useful and relevant information for your journey from Colorado to Boise. 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 Boise?
Book flights to Boise if you plan to visit one of these locationsOntario
Meridian
Nampa
Caldwell
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
Boise flight routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Alternative routes for Colorado to Boise
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Boise
Explore flights to Boise departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 9, 2026.
Complete your trip
Complete your trip to Boise by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Colorado to Boise by cabin class
Find flights from Colorado to Boise, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Colorado and Boise flights
Browse other Colorado and Boise flight options. Last updated on September 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Colorado to Boise flights
Consider these flights traveling from Colorado to Boise.
Top 4 airlines flying from Colorado to Boise
Discover the top 4 airlines that operate flights from Colorado to Boise. 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 7,457,451 searches. Data last updated September 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$54 | Average$140 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$68 | Average$369 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$179 | Average$395 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$197 | Average$374 | FlexibilityNo cancel fee | On-time63% |