$89+ Cheap flights from Philadelphia (PHL) 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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
Apr 29 — May 61
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia to Colorado with Cheapflights
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Cheapest flights from Philadelphia to ColoradoExplore the most affordable flight options available from Philadelphia to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 30, 2026.
Explore the most affordable flight options available from Philadelphia to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 4/248:41 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Sun 5/311:59 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 3/30![Frontier logo]()
$155
This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:10 am
PHL
- DEN
1 stop11h 55m
Frontier
Sun 5/176:03 am
DEN
- PHL
1 stop10h 37m
Frontier
Deal found 3/30![Frontier logo]()
$156
This Frontier deal was found by Cheapflights users on 3/30. 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.
Wed 4/226:05 am
PHL
- DEN
1 stop8h 04m
Frontier
Sat 5/21:09 pm
DEN
- PHL
1 stop9h 45m
Frontier
Deal found 3/30![Frontier logo]()
$157
This Super.com deal was found by Cheapflights users on 3/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/188:41 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Sat 4/2511:59 pm
DEN
- PHL
Nonstop3h 36m
Frontier
Deal found 3/30![Frontier logo]()
$158
This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/249:41 pm
PHL
- DEN
1 stop13h 59m
Frontier
Mon 5/411:59 pm
DEN
- PHL
1 stop10h 26m
Frontier
Deal found 3/30![Frontier logo]()
$159
This Expedia deal was found by Cheapflights users on 3/30. 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.
Mon 4/205:05 am
PHL
- DEN
1 stop8h 47m
Frontier
Thu 4/2311:05 pm
DEN
- PHL
1 stop13h 23m
Frontier
Deal found 3/30![Frontier logo]()
$160
This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1211:00 am
PHL
- DEN
1 stop14h 08m
Frontier
Wed 4/2911:59 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 3/30![Frontier logo]()
$161
This Cheapflightsfares deal was found by Cheapflights users on 3/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:41 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Sun 5/311:59 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 3/27![Frontier logo]()
$162
This Frontier deal was found by Cheapflights users on 3/30. 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.
Sun 4/196:56 pm
PHL
- DEN
1 stop7h 03m
Frontier
Thu 4/2311:59 pm
DEN
- PHL
1 stop9h 41m
Frontier
Deal found 3/30![Frontier logo]()
$165
This Frontier deal was found by Cheapflights users on 3/30. 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.
Sun 4/2610:38 pm
PHL
- DEN
1 stop11h 33m
Frontier
Wed 4/2911:59 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 3/30![Frontier logo]()
$166
This Delta deal was found by Cheapflights users on 3/27. 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.
Wed 4/293:42 pm
PHL
- COS
1 stop6h 38m
Delta
Sat 5/96:00 am
COS
- PHL
1 stop8h 40m
Delta
Deal found 3/27![Delta logo]()
$241
This Southwest deal was found by Cheapflights users on 3/30. 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.
Wed 4/295:50 am
PHL
- COS
1 stop5h 55m
Southwest
Wed 5/66:30 am
COS
- PHL
2 stops8h 20m
Southwest
Deal found 3/30![Southwest logo]()
$246
Best flights from Philadelphia to ColoradoDiscover carefully curated flight deals from Philadelphia to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 30, 2026.
Discover carefully curated flight deals from Philadelphia to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 30, 2026.
This Delta deal was found by Cheapflights users on 3/28. 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 5/21:20 pm
PHL
- COS
1 stop9h 00m
Delta
Tue 6/28:15 am
COS
- PHL
2 stops12h 52m
Delta
Deal found 3/28![Delta logo]()
$246
This Southwest deal was found by Cheapflights users on 3/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/76:35 pm
PHL
- DEN
1 stop7h 10m
Southwest
Mon 5/117:00 am
DEN
- PHL
2 stops7h 45m
Southwest
Deal found 3/27![Southwest logo]()
$246
This United Airlines deal was found by Cheapflights users on 3/29. 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.
Tue 4/2811:36 am
PHL
- MTJ
2 stops10h 44m
United Airlines
Tue 5/51:43 pm
MTJ
- PHL
1 stop8h 00m
United Airlines
Deal found 3/29![United Airlines logo]()
$314
This American Airlines deal was found by Cheapflights users on 3/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/294:17 pm
PHL
- GJT
1 stop7h 38m
American Airlines
Tue 6/26:55 pm
GJT
- PHL
1 stop9h 41m
American Airlines
Deal found 3/29![American Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 3/28. 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.
Tue 5/129:45 am
PHL
- COS
2 stops13h 42m
Delta
Tue 5/191:55 pm
COS
- PHL
1 stop6h 17m
Delta
Deal found 3/28![Delta logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 3/27. 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.
Sat 4/119:56 pm
PHL
- ALS
2 stops17h 34m
Multiple Airlines
Wed 4/152:00 pm
ALS
- PHL
1 stop13h 34m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$538
This Southwest deal was found by Cheapflights users on 3/29. 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 4/305:40 am
PHL
- COS
1 stop5h 40m
Southwest
Mon 5/45:20 pm
COS
- PHL
1 stop5h 15m
Southwest
Deal found 3/29![Southwest logo]()
$286
This Delta deal was found by Cheapflights users on 3/29. 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.
Sat 5/95:45 am
PHL
- DEN
1 stop8h 27m
Delta
Sun 5/106:19 pm
DEN
- PHL
1 stop9h 51m
Delta
Deal found 3/29![Delta logo]()
$279
This Southwest deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:50 am
PHL
- COS
1 stop5h 55m
Southwest
Wed 6/34:05 pm
COS
- PHL
1 stop5h 50m
Southwest
Deal found 3/25![Southwest logo]()
$293
This Delta deal was found by Cheapflights users on 3/29. 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 5/87:01 pm
PHL
- DEN
1 stop6h 40m
Delta
Mon 5/113:12 pm
DEN
- PHL
1 stop5h 55m
Delta
Deal found 3/29![Delta logo]()
$279
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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 5/53:34 pm
PHL
- HDN
1 stop6h 43m
United Airlines
Sat 5/91:40 pm
HDN
- PHL
1 stop8h 03m
United Airlines
Deal found 3/26![United Airlines logo]()
$340
This American Airlines deal was found by Cheapflights users on 3/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/241:47 pm
PHL
- GJT
2 stops10h 06m
American Airlines
Sun 4/266:55 pm
GJT
- PHL
1 stop10h 05m
American Airlines
Deal found 3/28![American Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 3/28. 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.
Wed 5/66:10 am
PHL
- COS
1 stop6h 37m
United Airlines
Sat 5/91:25 pm
COS
- PHL
2 stops9h 34m
United Airlines
Deal found 3/28![United Airlines logo]()
$346
This Southwest deal was found by Cheapflights users on 3/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/305:40 am
PHL
- DEN
Nonstop4h 05m
Southwest
Sun 5/37:45 pm
DEN
- PHL
Nonstop3h 30m
Southwest
Deal found 3/27![Southwest logo]()
$317
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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 4/118:00 am
PHL
- MTJ
1 stop6h 41m
United Airlines
Wed 4/151:40 pm
MTJ
- PHL
2 stops9h 19m
United Airlines
Deal found 3/26![United Airlines logo]()
$348
This Southwest deal was found by Cheapflights users on 3/29. 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 4/287:30 am
PHL
- MTJ
2 stops14h 25m
Southwest
Tue 5/58:45 am
MTJ
- PHL
2 stops11h 15m
Southwest
Deal found 3/29![Southwest logo]()
$331
This American Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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 6/312:51 pm
PHL
- EGE
1 stop8h 13m
American Airlines
Tue 6/97:50 am
EGE
- PHL
1 stop6h 38m
American Airlines
Deal found 3/26![American Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2510:00 am
PHL
- MTJ
2 stops12h 20m
United Airlines
Wed 4/291:40 pm
MTJ
- PHL
2 stops9h 19m
United Airlines
Deal found 3/25![United Airlines logo]()
$350
This Delta deal was found by Cheapflights users on 3/27. 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.
Sat 5/237:00 pm
PHL
- DEN
1 stop7h 33m
Delta
Sat 5/304:41 pm
DEN
- PHL
1 stop6h 16m
Delta
Deal found 3/27![Delta logo]()
$365
This Southwest deal was found by Cheapflights users on 3/29. 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.
Mon 4/272:15 pm
PHL
- DEN
2 stops7h 05m
Southwest
Thu 4/307:00 am
DEN
- PHL
2 stops7h 45m
Southwest
Deal found 3/29![Southwest logo]()
$341
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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 4/215:00 pm
PHL
- COS
1 stop6h 54m
United Airlines
Sat 4/2512:18 pm
COS
- PHL
1 stop8h 07m
United Airlines
Deal found 3/26![United Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 3/27. 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.
Tue 5/195:18 pm
PHL
- DEN
1 stop7h 40m
Delta
Sat 5/303:15 pm
DEN
- PHL
1 stop7h 42m
Delta
Deal found 3/27![Delta logo]()
$365
This American Airlines deal was found by Cheapflights users on 3/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/175:35 pm
PHL
- DRO
1 stop8h 29m
American Airlines
Sat 6/206:48 pm
DRO
- PHL
1 stop8h 46m
American Airlines
Deal found 3/28![American Airlines logo]()
$460
This Southwest deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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 4/2811:35 am
PHL
- DEN
2 stops7h 45m
Southwest
Fri 5/11:25 pm
DEN
- PHL
2 stops8h 20m
Southwest
Deal found 3/26![Southwest logo]()
$349
This United Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:10 am
PHL
- COS
1 stop6h 37m
United Airlines
Sat 5/161:25 pm
COS
- PHL
1 stop8h 18m
United Airlines
Deal found 3/25![United Airlines logo]()
$353
This Southwest deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/229:10 am
PHL
- DEN
2 stops9h 10m
Southwest
Mon 4/271:25 pm
DEN
- PHL
2 stops8h 20m
Southwest
Deal found 3/25![Southwest logo]()
$355
This United Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/910:33 am
PHL
- MTJ
2 stops11h 47m
United Airlines
Mon 4/131:40 pm
MTJ
- PHL
1 stop8h 03m
United Airlines
Deal found 3/25![United Airlines logo]()
$375
This Southwest deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/174:30 pm
PHL
- DEN
2 stops8h 30m
Southwest
Wed 4/226:50 am
DEN
- PHL
2 stops8h 00m
Southwest
Deal found 3/25![Southwest logo]()
$355
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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 4/253:40 pm
PHL
- GUC
1 stop6h 39m
United Airlines
Wed 4/291:35 pm
GUC
- PHL
2 stops9h 24m
United Airlines
Deal found 3/26![United Airlines logo]()
$385
This Southwest deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2211:35 am
PHL
- DEN
2 stops7h 45m
Southwest
Sun 4/2610:25 am
DEN
- PHL
2 stops11h 30m
Southwest
Deal found 3/25![Southwest logo]()
$355
Last-minute flights from Philadelphia to ColoradoDiscover last-minute flight deals from Philadelphia to Colorado. Data last updated March 30, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Colorado. Data last updated March 30, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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.
Thu 4/95:01 am
PHL
- DEN
1 stop9h 08m
Frontier
Sat 4/119:00 pm
DEN
- PHL
1 stop10h 14m
Frontier
Deal found 3/26![Frontier logo]()
$169
This Frontier deal was found by Cheapflights users on 3/30. 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.
Wed 4/158:41 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Mon 4/2011:59 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 3/30![Frontier logo]()
$160
This Trip.com deal was found by Cheapflights users on 3/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/153:00 pm
PHL
- DEN
1 stop9h 59m
Frontier
Sun 4/1911:59 pm
DEN
- PHL
1 stop21h 58m
Frontier
Deal found 3/29![Frontier logo]()
$165
This Super.com deal was found by Cheapflights users on 3/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/178:36 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Sun 4/1911:59 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 3/30![Frontier logo]()
$156
This Cheapflightsfares deal was found by Cheapflights users on 3/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/175:05 am
PHL
- DEN
1 stop8h 46m
Frontier
Mon 4/2011:59 pm
DEN
- PHL
1 stop8h 39m
Frontier
Deal found 3/29![Frontier logo]()
$164
This Cheapflightsfares deal was found by Cheapflights users on 3/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/178:36 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Fri 4/2411:59 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 3/29![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 3/28. 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.
Wed 4/228:41 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Mon 4/2711:59 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 3/28![Frontier logo]()
$171
This Expedia deal was found by Cheapflights users on 3/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2211:02 am
PHL
- DEN
1 stop13h 27m
Frontier
Sun 4/2611:59 pm
DEN
- PHL
1 stop9h 03m
Frontier
Deal found 3/27![Frontier logo]()
$172
This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2310:39 am
PHL
- DEN
1 stop14h 20m
Frontier
Mon 4/2711:05 pm
DEN
- PHL
1 stop12h 57m
Frontier
Deal found 3/30![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 4/248:41 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Thu 4/3011:59 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 3/28![Frontier logo]()
$170
This Frontier deal was found by Cheapflights users on 3/28. 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.
Sun 4/266:54 pm
PHL
- DEN
1 stop7h 05m
Frontier
Mon 4/2711:59 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 3/28![Frontier logo]()
$166
This Delta deal was found by Cheapflights users on 3/27. 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.
Wed 4/293:42 pm
PHL
- COS
1 stop6h 38m
Delta
Sat 5/96:00 am
COS
- PHL
1 stop8h 40m
Delta
Deal found 3/27![Delta logo]()
$241
One-way flights from Philadelphia to ColoradoSearch for one-way flight options from Philadelphia to Colorado. Find affordable one-way fares based on user searches. Data last updated March 30, 2026.
Search for one-way flight options from Philadelphia to Colorado. Find affordable one-way fares based on user searches. Data last updated March 30, 2026.
This Trip.com deal was found by Cheapflights users on 3/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/35:55 am
PHL
- DEN
1 stop29h 00m
Frontier
Deal found 3/28![Frontier logo]()
$89
This Super.com deal was found by Cheapflights users on 3/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/254:42 pm
PHL
- DEN
1 stop17h 39m
Frontier
Deal found 3/27![Frontier logo]()
$90
This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/126:25 am
PHL
- DEN
1 stop17h 24m
Frontier
Deal found 3/30![Frontier logo]()
$91
This Expedia deal was found by Cheapflights users on 3/30. 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 5/149:16 pm
PHL
- DEN
1 stop13h 08m
Frontier
Deal found 3/30![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
Sun 4/263:29 pm
PHL
- DEN
1 stop18h 59m
Frontier
Deal found 3/30![Frontier logo]()
$93
This Super.com deal was found by Cheapflights users on 3/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/308:41 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Deal found 3/27![Frontier logo]()
$95
This CheapOair deal was found by Cheapflights users on 3/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/139:56 am
PHL
- DEN
1 stop28h 06m
Frontier
Deal found 3/28![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 3/27. 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.
Sat 6/134:35 pm
PHL
- DEN
1 stop7h 41m
Frontier
Deal found 3/27![Frontier logo]()
$99
This Cheapflightsfares deal was found by Cheapflights users on 3/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/224:35 pm
PHL
- DEN
1 stop7h 41m
Frontier
Deal found 3/27![Frontier logo]()
$100
This Frontier deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/295:06 pm
PHL
- DEN
1 stop8h 48m
Frontier
Deal found 3/30![Frontier logo]()
$101
This Frontier deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” 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.
Fri 5/298:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Deal found 3/26![Frontier logo]()
$102
This Delta deal was found by Cheapflights users on 3/27. 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.
Tue 5/195:15 pm
PHL
- COS
1 stop6h 12m
Delta
Deal found 3/27![Delta logo]()
$121
Find flight deals from Philadelphia to Colorado
Keep the following information in mind while searching for Philadelphia to Colorado flight deals. Data was last updated March 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $156 (Super.com) |
One-way from | $89 (Trip.com) |
Popular in | March |
Cheapest in | July |
Average price | $384 |
Good round-trip deal | $292 or less |
Good one-way deal | $177 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Philadelphia 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 March 30, 2026.
Use the filters below to find and compare flights from Philadelphia to Colorado that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhiladelphiaColorado Springs
PHL - COS
PHLCOS
Philadelphia
Sat 5/2
1:20 pm-8:20 pm
1 stop9h 00m
Colorado Springs
Tue 6/2
8:15 am-11:07 pm
2 stops12h 52m
$246
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Thu 5/7
6:35 pm-11:45 pm
1 stop7h 10m
Denver Intl
Mon 5/11
7:00 am-4:45 pm
2 stops7h 45m
$246
PhiladelphiaColorado Springs
PHL - COS
PHLCOS
Philadelphia
Tue 5/12
9:45 am-9:27 pm
2 stops13h 42m
Colorado Springs
Tue 5/19
1:55 pm-10:12 pm
1 stop6h 17m
$246
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Sat 5/9
5:45 am-12:12 pm
1 stop8h 27m
Denver Intl
Sun 5/10
6:19 pm-6:10 am
1 stop9h 51m
$279
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Fri 5/8
7:01 pm-11:41 pm
1 stop6h 40m
Denver Intl
Mon 5/11
3:12 pm-11:07 pm
1 stop5h 55m
$279
PhiladelphiaColorado Springs
PHL - COS
PHLCOS
Philadelphia
Thu 4/30
5:40 am-9:20 am
1 stop5h 40m
Colorado Springs
Mon 5/4
5:20 pm-12:35 am
1 stop5h 15m
$286
PhiladelphiaColorado Springs
PHL - COS
PHLCOS
Philadelphia
Tue 5/12
5:50 am-9:45 am
1 stop5h 55m
Colorado Springs
Wed 6/3
4:05 pm-11:55 pm
1 stop5h 50m
$293
PhiladelphiaMontrose
PHL - MTJ
PHLMTJ
Philadelphia
Tue 4/28
11:36 am-8:20 pm
2 stops10h 44m
Montrose County
Tue 5/5
1:43 pm-11:43 pm
1 stop8h 00m
$314
Quickest round-trip
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Thu 4/30
5:40 am-7:45 am
Nonstop4h 05m
Denver Intl
Sun 5/3
7:45 pm-1:15 am
Nonstop3h 30m
$317
PhiladelphiaGrand Junction
PHL - GJT
PHLGJT
Philadelphia
Fri 5/29
4:17 pm-9:55 pm
1 stop7h 38m
Grand Junction Regnl
Tue 6/2
6:55 pm-6:36 am
1 stop9h 41m
$329
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Philadelphia to Colorado
Have a flexible travel schedule? Discover the best time to fly to Colorado from Philadelphia with our price prediction graph.
PHL-DEN
PHL-COS
PHL-MTJ
PHL-GJT
PHL-ALS
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 Philadelphia to Colorado
PHL-USCO
PHL-DEN
PHL-COS
PHL-MTJ
PHL-GJT
What is the cheapest month to book a flight from Philadelphia to Colorado?
Currently, January is the cheapest month in which you can book a flight from Philadelphia to Colorado (average of $85). Flying from Philadelphia to Colorado in June is currently the most expensive (average of $141). 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 PHL to CO?
Find hourly flight availability from Philadelphia 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 March 30, 2026.
It’s optimal to fly from Philadelphia to Colorado at noon. By choosing this option you can save up to 69% on the cost of your flight, compared to a flight in the morning.
What is the cheapest day to fly from Philadelphia to Colorado?
Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Colorado. Price data was last updated on March 28, 2026.
Travelers seeking maximum savings on their Philadelphia to Colorado flight should consider departing on Friday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Philadelphia to Colorado
Explore weekly flight availability from Philadelphia 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 March 30, 2026.
The most flights from PHL to USCO are scheduled on a Monday (10 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 Philadelphia to Colorado?
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 March 30, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from Philadelphia to Colorado to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Philadelphia 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 Philadelphia to Colorado
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Complete your trip
Complete your trip to Colorado by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Philadelphia to Colorado by cabin class
Find flights from Philadelphia to Colorado, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Philadelphia and Colorado flights
Browse other Philadelphia and Colorado flight options. Last updated on March 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Philadelphia to Colorado flights
Consider these flights traveling from Philadelphia to Colorado.
Top 7 airlines flying from Philadelphia to Colorado
Discover the top 7 airlines that operate flights from Philadelphia 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 March 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$103 | Average$216 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$106 | Average$194 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$128 | Average$390 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$187 | Average$436 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$189 | Average$475 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$206 | Average$456 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$220 | Average$293 | FlexibilityNo cancel fee | On-time62% |