$109+ Cheap flights from Portland (PDX) to Colorado
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 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — DEN
Aug 24 — Aug 311
Round-trip
1 adult, Economy
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Cheapest flights from Portland to ColoradoExplore the most affordable flight options available from Portland to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.
Explore the most affordable flight options available from Portland to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 7/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:16 pm
PDX
- DEN
Nonstop2h 43m
Frontier
Mon 8/173:08 pm
DEN
- PDX
Nonstop2h 43m
Frontier
Deal found 7/22![Frontier logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 9/135:30 pm
PDX
- DEN
1 stop15h 10m
Frontier
Wed 9/1612:37 pm
DEN
- PDX
Nonstop2h 50m
Frontier
Deal found 7/21![Frontier logo]()
$192
This Frontier deal was found by Cheapflights users on 7/21. 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.
Thu 9/105:30 pm
PDX
- DEN
1 stop5h 55m
Frontier
Tue 9/1512:37 pm
DEN
- PDX
Nonstop2h 50m
Frontier
Deal found 7/21![Frontier logo]()
$193
This Cheapflightsfares deal was found by Cheapflights users on 7/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1712:20 pm
PDX
- DEN
Nonstop2h 43m
Frontier
Mon 8/313:28 pm
DEN
- PDX
Nonstop2h 43m
Frontier
Deal found 7/23![Frontier logo]()
$194
This Super.com deal was found by Cheapflights users on 7/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:16 pm
PDX
- DEN
Nonstop2h 43m
Frontier
Sat 8/153:08 pm
DEN
- PDX
Nonstop2h 43m
Frontier
Deal found 7/20![Frontier logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/271:47 pm
PDX
- DEN
1 stop6h 54m
Frontier
Mon 8/313:28 pm
DEN
- PDX
Nonstop2h 43m
Frontier
Deal found 7/22![Frontier logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 9/65:56 pm
PDX
- DEN
1 stop15h 07m
Frontier
Wed 9/912:37 pm
DEN
- PDX
Nonstop2h 50m
Frontier
Deal found 7/20![Frontier logo]()
$197
This Frontier deal was found by Cheapflights users on 7/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:49 pm
PDX
- DEN
1 stop8h 59m
Frontier
Sat 8/223:28 pm
DEN
- PDX
Nonstop2h 43m
Frontier
Deal found 7/23![Frontier logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/2012:20 pm
PDX
- DEN
Nonstop2h 43m
Multiple Airlines
Fri 8/2812:05 pm
DEN
- PDX
Nonstop2h 43m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Sun 8/237:18 am
PDX
- DEN
Nonstop2h 49m
Multiple Airlines
Mon 8/313:28 pm
DEN
- PDX
Nonstop2h 43m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$200
This Cheapflightsfares deal was found by Cheapflights users on 7/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2112:20 pm
PDX
- DEN
Nonstop2h 43m
Frontier
Mon 8/247:00 am
DEN
- PDX
1 stop5h 35m
Frontier
Deal found 7/20![Frontier logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Sat 9/55:56 pm
PDX
- DEN
1 stop29h 48m
Frontier
Mon 9/73:28 pm
DEN
- PDX
Nonstop2h 43m
Frontier
Deal found 7/22![Frontier logo]()
$202
Best flights from Portland to ColoradoDiscover carefully curated flight deals from Portland to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 25, 2026.
Discover carefully curated flight deals from Portland to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 25, 2026.
This Delta deal was found by Cheapflights users on 7/20. 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.
Sat 8/299:45 am
PDX
- DEN
1 stop4h 17m
Delta
Sun 8/306:20 am
DEN
- PDX
1 stop6h 25m
Delta
Deal found 7/20![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 7/20. 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.
Thu 9/247:35 pm
PDX
- DEN
Nonstop2h 30m
Southwest
Mon 9/284:10 pm
DEN
- PDX
2 stops7h 00m
Southwest
Deal found 7/20![Southwest logo]()
$252
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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 9/2511:48 am
PDX
- DEN
1 stop5h 22m
Alaska Airlines
Mon 9/286:17 am
DEN
- PDX
1 stop8h 31m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$262
This United Airlines deal was found by Cheapflights users on 7/20. 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 8/194:07 pm
PDX
- DRO
1 stop4h 53m
United Airlines
Tue 8/255:15 am
DRO
- PDX
1 stop5h 17m
United Airlines
Deal found 7/20![United Airlines logo]()
$292
This Delta deal was found by Cheapflights users on 7/23. 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.
Thu 9/243:21 pm
PDX
- DEN
1 stop7h 26m
Delta
Sun 9/276:00 am
DEN
- PDX
1 stop5h 40m
Delta
Deal found 7/23![Delta logo]()
$257
This Southwest deal was found by Cheapflights users on 7/24. 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.
Sat 8/2211:20 am
PDX
- DEN
2 stops6h 15m
Southwest
Wed 8/264:00 pm
DEN
- PDX
1 stop4h 50m
Southwest
Deal found 7/24![Southwest logo]()
$263
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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.
Tue 10/2010:30 am
PDX
- DEN
1 stop6h 31m
Alaska Airlines
Sat 10/2412:31 pm
DEN
- PDX
1 stop6h 47m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$267
This Southwest deal was found by Cheapflights users on 7/24. 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.
Mon 8/315:45 am
PDX
- DEN
1 stop5h 25m
Southwest
Wed 9/29:05 am
DEN
- PDX
2 stops7h 20m
Southwest
Deal found 7/24![Southwest logo]()
$267
This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:30 am
PDX
- EGE
2 stops11h 13m
American Airlines
Mon 9/218:00 am
EGE
- PDX
1 stop9h 54m
American Airlines
Deal found 7/21![American Airlines logo]()
$594
This United Airlines deal was found by Cheapflights users on 7/20. 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 8/195:00 am
PDX
- DRO
1 stop6h 32m
United Airlines
Wed 8/261:34 pm
DRO
- PDX
2 stops10h 11m
United Airlines
Deal found 7/20![United Airlines logo]()
$303
This Delta deal was found by Cheapflights users on 7/21. 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 9/39:45 am
PDX
- DEN
1 stop4h 17m
Delta
Sat 9/56:28 pm
DEN
- PDX
1 stop5h 10m
Delta
Deal found 7/21![Delta logo]()
$282
This Southwest deal was found by Cheapflights users on 7/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:35 pm
PDX
- DEN
Nonstop2h 30m
Southwest
Mon 8/244:10 pm
DEN
- PDX
2 stops7h 00m
Southwest
Deal found 7/23![Southwest logo]()
$267
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Fri 9/115:00 am
PDX
- DRO
1 stop6h 32m
United Airlines
Sun 9/135:15 am
DRO
- PDX
1 stop5h 18m
United Airlines
Deal found 7/21![United Airlines logo]()
$308
This United Airlines deal was found by Cheapflights users on 7/20. 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 8/2112:45 pm
PDX
- GJT
1 stop6h 50m
United Airlines
Fri 8/289:24 am
GJT
- PDX
1 stop6h 41m
United Airlines
Deal found 7/20![United Airlines logo]()
$309
This Southwest deal was found by Cheapflights users on 7/21. 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.
Wed 10/216:00 am
PDX
- DEN
2 stops7h 00m
Southwest
Sun 10/258:25 am
DEN
- PDX
1 stop5h 00m
Southwest
Deal found 7/21![Southwest logo]()
$283
This Delta deal was found by Cheapflights users on 7/21. 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.
Fri 9/185:10 pm
PDX
- COS
1 stop4h 15m
Delta
Mon 9/216:11 pm
COS
- PDX
1 stop6h 29m
Delta
Deal found 7/21![Delta logo]()
$317
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Fri 9/45:00 am
PDX
- GJT
1 stop6h 38m
United Airlines
Mon 9/75:30 am
GJT
- PDX
1 stop5h 02m
United Airlines
Deal found 7/21![United Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 7/21. 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.
Fri 9/45:08 pm
PDX
- GJT
1 stop3h 48m
Delta
Mon 9/77:41 am
GJT
- PDX
1 stop5h 29m
Delta
Deal found 7/21![Delta logo]()
$319
This Southwest deal was found by Cheapflights users on 7/20. 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.
Tue 10/206:00 am
PDX
- COS
1 stop5h 00m
Southwest
Tue 10/2711:45 am
COS
- PDX
2 stops6h 40m
Southwest
Deal found 7/20![Southwest logo]()
$312
This United Airlines deal was found by Cheapflights users on 7/20. 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 10/112:45 pm
PDX
- HDN
1 stop6h 36m
United Airlines
Sat 10/31:43 pm
HDN
- PDX
1 stop5h 03m
United Airlines
Deal found 7/20![United Airlines logo]()
$315
This Delta deal was found by Cheapflights users on 7/23. 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.
Mon 8/241:25 pm
PDX
- GJT
2 stops7h 31m
Delta
Mon 8/316:53 pm
GJT
- PDX
1 stop4h 45m
Delta
Deal found 7/23![Delta logo]()
$324
This Southwest deal was found by Cheapflights users on 7/20. 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.
Thu 10/18:00 am
PDX
- HDN
2 stops10h 15m
Southwest
Sat 10/39:10 am
HDN
- PDX
2 stops11h 15m
Southwest
Deal found 7/20![Southwest logo]()
$325
This Delta deal was found by Cheapflights users on 7/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:10 pm
PDX
- GJT
1 stop3h 47m
Delta
Wed 9/167:41 am
GJT
- PDX
2 stops9h 56m
Delta
Deal found 7/24![Delta logo]()
$334
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Fri 8/74:15 pm
PDX
- DRO
1 stop4h 45m
United Airlines
Fri 8/141:34 pm
DRO
- PDX
2 stops10h 11m
United Airlines
Deal found 7/22![United Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 7/24. 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 10/15:30 am
PDX
- COS
2 stops9h 10m
Southwest
Mon 10/55:00 pm
COS
- PDX
2 stops8h 30m
Southwest
Deal found 7/24![Southwest logo]()
$327
This American Airlines deal was found by Cheapflights users on 7/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:18 am
PDX
- EGE
1 stop7h 10m
American Airlines
Tue 9/810:28 am
EGE
- PDX
1 stop8h 02m
American Airlines
Deal found 7/21![American Airlines logo]()
$599
This United Airlines deal was found by Cheapflights users on 7/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/84:15 pm
PDX
- GJT
1 stop4h 56m
United Airlines
Wed 8/125:30 am
GJT
- PDX
1 stop5h 02m
United Airlines
Deal found 7/24![United Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 7/22. 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.
Thu 9/173:25 pm
PDX
- COS
1 stop5h 30m
Southwest
Mon 9/215:10 pm
COS
- PDX
1 stop7h 10m
Southwest
Deal found 7/22![Southwest logo]()
$327
This American Airlines deal was found by Cheapflights users on 7/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:35 am
PDX
- EGE
2 stops11h 07m
American Airlines
Mon 8/247:50 am
EGE
- PDX
2 stops10h 01m
American Airlines
Deal found 7/22![American Airlines logo]()
$599
This United Airlines deal was found by Cheapflights users on 7/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:00 am
PDX
- DRO
1 stop6h 32m
United Airlines
Mon 9/145:15 am
DRO
- PDX
1 stop5h 17m
United Airlines
Deal found 7/24![United Airlines logo]()
$359
Last-minute flights from Portland to ColoradoDiscover last-minute flight deals from Portland to Colorado. Data last updated July 25, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Colorado. Data last updated July 25, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 7/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:16 pm
PDX
- DEN
Nonstop2h 43m
Frontier
Mon 8/173:08 pm
DEN
- PDX
Nonstop2h 43m
Frontier
Deal found 7/22![Frontier logo]()
$191
This Super.com deal was found by Cheapflights users on 7/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:16 pm
PDX
- DEN
Nonstop2h 43m
Frontier
Fri 8/143:08 pm
DEN
- PDX
Nonstop2h 43m
Frontier
Deal found 7/20![Frontier logo]()
$195
This Cheapflightsfares deal was found by Cheapflights users on 7/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1712:20 pm
PDX
- DEN
Nonstop2h 43m
Frontier
Mon 8/313:28 pm
DEN
- PDX
Nonstop2h 43m
Frontier
Deal found 7/23![Frontier logo]()
$194
This Cheapflightsfares deal was found by Cheapflights users on 7/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1712:20 pm
PDX
- DEN
Nonstop2h 43m
Frontier
Sat 8/223:28 pm
DEN
- PDX
Nonstop2h 43m
Frontier
Deal found 7/22![Frontier logo]()
$197
This Frontier deal was found by Cheapflights users on 7/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:56 pm
PDX
- DEN
Nonstop2h 43m
Frontier
Thu 8/273:28 pm
DEN
- PDX
Nonstop2h 43m
Frontier
Deal found 7/23![Frontier logo]()
$193
This United Airlines deal was found by Cheapflights users on 7/20. 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 8/194:07 pm
PDX
- DRO
1 stop4h 53m
United Airlines
Wed 8/266:00 pm
DRO
- PDX
1 stop5h 54m
United Airlines
Deal found 7/20![United Airlines logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/2012:20 pm
PDX
- DEN
Nonstop2h 43m
Frontier
Thu 8/2710:39 pm
DEN
- PDX
1 stop13h 56m
Frontier
Deal found 7/22![Frontier logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/2012:20 pm
PDX
- DEN
Nonstop2h 43m
Multiple Airlines
Fri 8/2812:05 pm
DEN
- PDX
Nonstop2h 43m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/205:58 pm
PDX
- DEN
Nonstop2h 48m
Multiple Airlines
Wed 9/23:28 pm
DEN
- PDX
Nonstop2h 43m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$202
This Cheapflightsfares deal was found by Cheapflights users on 7/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2112:20 pm
PDX
- DEN
Nonstop2h 43m
Frontier
Mon 8/247:00 am
DEN
- PDX
1 stop5h 35m
Frontier
Deal found 7/20![Frontier logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Sun 8/237:18 am
PDX
- DEN
Nonstop2h 49m
Multiple Airlines
Mon 8/313:28 pm
DEN
- PDX
Nonstop2h 43m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/271:47 pm
PDX
- DEN
1 stop6h 54m
Frontier
Mon 8/313:28 pm
DEN
- PDX
Nonstop2h 43m
Frontier
Deal found 7/22![Frontier logo]()
$196
One-way flights from Portland to ColoradoSearch for one-way flight options from Portland to Colorado. Find affordable one-way fares based on user searches. Data last updated July 25, 2026.
Search for one-way flight options from Portland to Colorado. Find affordable one-way fares based on user searches. Data last updated July 25, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/22. 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.
Sat 11/145:49 pm
PDX
- DEN
Nonstop2h 39m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$109
This United Airlines deal was found by Cheapflights users on 7/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/23:43 pm
PDX
- DEN
1 stop6h 59m
United Airlines
Deal found 7/24![United Airlines logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Mon 9/2111:02 am
PDX
- DEN
1 stop21h 30m
Frontier
Deal found 7/24![Frontier logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Fri 8/285:56 pm
PDX
- DEN
1 stop15h 07m
Frontier
Deal found 7/24![Frontier logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Mon 8/245:56 pm
PDX
- DEN
1 stop15h 07m
Frontier
Deal found 7/22![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 7/21. 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.
Mon 10/265:30 pm
PDX
- DEN
1 stop23h 42m
Frontier
Deal found 7/21![Frontier logo]()
$118
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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.
Tue 10/62:48 pm
PDX
- DEN
Nonstop2h 37m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Sun 8/231:47 pm
PDX
- DEN
1 stop13h 01m
Frontier
Deal found 7/22![Frontier logo]()
$123
This Delta deal was found by Cheapflights users on 7/22. 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.
Sat 8/221:15 pm
PDX
- DEN
1 stop5h 46m
Delta
Deal found 7/22![Delta logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Mon 8/175:49 pm
PDX
- DEN
1 stop8h 59m
Frontier
Deal found 7/23![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Fri 10/239:34 pm
PDX
- DEN
1 stop19h 09m
Frontier
Deal found 7/22![Frontier logo]()
$126
This Southwest deal was found by Cheapflights users on 7/20. 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 9/118:00 am
PDX
- COS
1 stop7h 30m
Southwest
Deal found 7/20![Southwest logo]()
$154
Find flight deals from Portland to Colorado
Keep the following information in mind while searching for Portland to Colorado flight deals. Data was last updated July 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $191 (Cheapflightsfares) |
One-way from | $109 (Alaska Airlines) |
Popular in | June |
Cheapest in | January |
Average price | $280 |
Good round-trip deal | $305 or less |
Good one-way deal | $175 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland to Colorado 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 July 25, 2026.
Use the filters below to find and compare flights from Portland to Colorado that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandDenver
PDX - DEN
PDXDEN
Portland
Sat 8/29
9:45 am-3:02 pm
1 stop4h 17m
Denver Intl
Sun 8/30
6:20 am-11:45 am
1 stop6h 25m
$247
PortlandDenver
PDX - DEN
PDXDEN
Portland
Thu 9/24
7:35 pm-11:05 pm
Nonstop2h 30m
Denver Intl
Mon 9/28
4:10 pm-10:10 pm
2 stops7h 00m
$252
PortlandDenver
PDX - DEN
PDXDEN
Portland
Thu 9/24
3:21 pm-11:47 pm
1 stop7h 26m
Denver Intl
Sun 9/27
6:00 am-10:40 am
1 stop5h 40m
$257
PortlandDenver
PDX - DEN
PDXDEN
Portland
Fri 9/25
11:48 am-6:10 pm
1 stop5h 22m
Denver Intl
Mon 9/28
6:17 am-1:48 pm
1 stop8h 31m
$262
PortlandDenver
PDX - DEN
PDXDEN
Portland
Sat 8/22
11:20 am-6:35 pm
2 stops6h 15m
Denver Intl
Wed 8/26
4:00 pm-7:50 pm
1 stop4h 50m
$263
PortlandDenver
PDX - DEN
PDXDEN
Portland
Tue 10/20
10:30 am-6:01 pm
1 stop6h 31m
Denver Intl
Sat 10/24
12:31 pm-6:18 pm
1 stop6h 47m
$267
PortlandDenver
PDX - DEN
PDXDEN
Portland
Mon 8/31
5:45 am-12:10 pm
1 stop5h 25m
Denver Intl
Wed 9/2
9:05 am-3:25 pm
2 stops7h 20m
$267
PortlandDenver
PDX - DEN
PDXDEN
Portland
Thu 8/13
7:35 pm-11:05 pm
Nonstop2h 30m
Denver Intl
Mon 8/24
4:10 pm-10:10 pm
2 stops7h 00m
$267
PortlandDenver
PDX - DEN
PDXDEN
Portland
Thu 9/3
9:45 am-3:02 pm
1 stop4h 17m
Denver Intl
Sat 9/5
6:28 pm-10:38 pm
1 stop5h 10m
$282
PortlandDenver
PDX - DEN
PDXDEN
Portland
Wed 10/21
6:00 am-2:00 pm
2 stops7h 00m
Denver Intl
Sun 10/25
8:25 am-12:25 pm
1 stop5h 00m
$283
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Portland to Colorado
Have a flexible travel schedule? Discover the best time to fly to Colorado from Portland with our price prediction graph.
PDX-DEN
PDX-DRO
PDX-COS
PDX-GJT
PDX-MTJ
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 Portland to Colorado
PDX-USCO
PDX-DEN
PDX-DRO
PDX-COS
PDX-GJT
What is the cheapest month to book a flight from Portland to Colorado?
Currently, January is the cheapest month in which you can book a flight from Portland to Colorado (average of $231). Flying from Portland to Colorado in June is currently the most expensive (average of $340). 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 PDX to CO?
Find hourly flight availability from Portland to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 25, 2026.
One of the essential ways to save on airfare from Portland to Colorado is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 15% on airfare.
Weekly flight availability from Portland to Colorado
Explore weekly flight availability from Portland to Colorado. 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 July 25, 2026.
The most flights from PDX to USCO are scheduled on a Friday (23 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (9 on average).
How much does it cost to fly round-trip from Portland to Colorado?
Airfare is typical for this route at the moment.
Portland to Colorado flights typically cost between $186 and $313 in August.The cheapest round-trip price found within the last 5 days was $191 on Frontier (Aug 11-Aug 14).
How far ahead should I book a flight from Portland to Colorado?
The best time to book flights from Portland to Colorado is 76 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest day to fly from Portland to Colorado?
Use this chart to determine the cheapest time to fly round-trip from Portland to Colorado. Price data was last updated on July 18, 2026.
Travelers seeking maximum savings on their Portland to Colorado flight should consider departing on Thursday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Colorado
Get insights into the airlines that provide service to Colorado. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Colorado. Reviews last updated July 25, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andDelta from Portland to Colorado by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Portland to Colorado. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Portland to Colorado
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Colorado by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Portland to Colorado by cabin class
Find flights from Portland to Colorado, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Portland and Colorado flights
Browse other Portland and Colorado flight options. Last updated on July 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Portland to Colorado flights
Consider these flights traveling from Portland to Colorado.
Top 8 airlines flying from Portland to Colorado
Discover the top 8 airlines that operate flights from Portland to Colorado. 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 July 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$56 | Average$174 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$88 | Average$320 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$88 | Average$207 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$126 | Average$256 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$143 | Average$274 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$147 | Average$396 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$147 | Average$390 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$264 | Average$428 | FlexibilityNo cancel fee | On-time71% |