$118+ 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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
Jul 11 — Jul 181
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 June 11, 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 June 11, 2026.
This Expedia deal was found by Cheapflights users on 6/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2212:44 pm
PHL
- DEN
Nonstop4h 14m
Multiple Airlines
Tue 7/2811:37 pm
DEN
- PHL
1 stop6h 53m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$197
This Frontier deal was found by Cheapflights users on 6/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/212:42 pm
PHL
- DEN
Nonstop4h 14m
Frontier
Thu 9/36:05 am
DEN
- PHL
Nonstop3h 42m
Frontier
Deal found 6/9![Frontier logo]()
$199
This Cheapflightsfares deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 7/38:37 pm
PHL
- DEN
Nonstop4h 22m
Frontier
Tue 7/76:05 am
DEN
- PHL
Nonstop3h 44m
Frontier
Deal found 6/10![Frontier logo]()
$200
This Super.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
Wed 7/2212:44 pm
PHL
- DEN
Nonstop4h 14m
Frontier
Sun 7/266:05 am
DEN
- PHL
Nonstop3h 44m
Frontier
Deal found 6/10![Frontier logo]()
$202
This CheapOair deal was found by Cheapflights users on 6/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:28 am
PHL
- DEN
1 stop6h 47m
Multiple Airlines
Mon 8/3111:59 pm
DEN
- PHL
Nonstop3h 39m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$203
This JetBlue deal was found by Cheapflights users on 6/7. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:28 am
PHL
- DEN
1 stop6h 47m
JetBlue
Mon 8/2411:37 pm
DEN
- PHL
1 stop6h 58m
JetBlue
Deal found 6/7![JetBlue logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/44:30 pm
PHL
- DEN
2 stops29h 33m
Frontier
Mon 8/1011:59 pm
DEN
- PHL
Nonstop3h 40m
Frontier
Deal found 6/10![Frontier logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Mon 8/108:37 pm
PHL
- DEN
Nonstop4h 27m
Frontier
Sat 8/226:30 am
DEN
- PHL
1 stop10h 47m
Frontier
Deal found 6/9![Frontier logo]()
$206
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 8/197:30 am
PHL
- DEN
Nonstop4h 09m
American Airlines
Wed 8/2610:29 am
DEN
- PHL
Nonstop3h 45m
American Airlines
Deal found 6/10![American Airlines logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Wed 8/54:30 pm
PHL
- DEN
1 stop7h 35m
Frontier
Mon 8/1011:59 pm
DEN
- PHL
Nonstop3h 40m
Frontier
Deal found 6/9![Frontier logo]()
$208
This Cheapflightsfares deal was found by Cheapflights users on 6/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1512:44 pm
PHL
- DEN
Nonstop4h 14m
Frontier
Wed 8/196:05 am
DEN
- PHL
Nonstop3h 42m
Frontier
Deal found 6/7![Frontier logo]()
$209
This CheapOair deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
Thu 8/138:37 pm
PHL
- DEN
Nonstop4h 27m
Multiple Airlines
Mon 8/1711:37 pm
DEN
- PHL
1 stop6h 58m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$210
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 June 11, 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 June 11, 2026.
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 8/196:00 am
PHL
- DEN
Nonstop3h 55m
Southwest
Wed 8/266:10 pm
DEN
- PHL
Nonstop3h 40m
Southwest
Deal found 6/10![Southwest logo]()
$206
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 8/256:25 am
PHL
- COS
1 stop6h 08m
United Airlines
Tue 9/111:55 am
COS
- PHL
1 stop7h 32m
United Airlines
Deal found 6/10![United Airlines logo]()
$219
This Delta deal was found by Cheapflights users on 6/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:15 am
PHL
- DEN
1 stop8h 10m
Delta
Wed 8/197:19 am
DEN
- PHL
1 stop6h 52m
Delta
Deal found 6/9![Delta logo]()
$237
This American Airlines deal was found by Cheapflights users on 6/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:05 am
PHL
- GJT
1 stop9h 21m
American Airlines
Wed 9/212:12 pm
GJT
- PHL
1 stop9h 16m
American Airlines
Deal found 6/9![American Airlines logo]()
$351
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 8/2510:45 am
PHL
- HDN
2 stops10h 35m
Southwest
Tue 9/18:45 am
HDN
- PHL
2 stops10h 10m
Southwest
Deal found 6/10![Southwest logo]()
$216
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 8/2510:05 am
PHL
- HDN
1 stop6h 24m
United Airlines
Tue 9/11:30 pm
HDN
- PHL
2 stops9h 29m
United Airlines
Deal found 6/10![United Airlines logo]()
$250
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 10/36:15 am
PHL
- DEN
1 stop5h 24m
Delta
Wed 10/710:30 am
DEN
- PHL
1 stop6h 54m
Delta
Deal found 6/10![Delta logo]()
$253
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 8/181:45 pm
PHL
- DEN
2 stops8h 00m
Southwest
Tue 9/111:15 am
DEN
- PHL
2 stops7h 40m
Southwest
Deal found 6/10![Southwest logo]()
$237
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 10/157:29 pm
PHL
- DEN
1 stop6h 54m
Delta
Wed 10/2112:59 am
DEN
- PHL
1 stop6h 28m
Delta
Deal found 6/10![Delta logo]()
$269
This Southwest deal was found by Cheapflights users on 6/8. 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 8/257:15 am
PHL
- DEN
2 stops9h 30m
Southwest
Sat 8/295:45 am
DEN
- PHL
1 stop5h 45m
Southwest
Deal found 6/8![Southwest logo]()
$274
This American Airlines deal was found by Cheapflights users on 6/6. 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.
Mon 7/65:00 am
PHL
- EGE
1 stop6h 53m
American Airlines
Mon 7/137:50 am
EGE
- PHL
1 stop9h 02m
American Airlines
Deal found 6/6![American Airlines logo]()
$360
This Delta deal was found by Cheapflights users on 6/8. 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 10/176:13 pm
PHL
- DEN
1 stop8h 10m
Delta
Mon 10/193:10 pm
DEN
- PHL
1 stop5h 46m
Delta
Deal found 6/8![Delta logo]()
$302
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 8/196:25 am
PHL
- COS
1 stop6h 08m
United Airlines
Sat 8/2211:55 am
COS
- PHL
1 stop7h 32m
United Airlines
Deal found 6/10![United Airlines logo]()
$340
This American Airlines deal was found by Cheapflights users on 6/8. 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.
Sat 8/1511:00 am
PHL
- EGE
1 stop9h 42m
American Airlines
Fri 8/212:08 pm
EGE
- PHL
1 stop6h 43m
American Airlines
Deal found 6/8![American Airlines logo]()
$360
This Delta deal was found by Cheapflights users on 6/8. 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.
Tue 9/153:35 pm
PHL
- COS
2 stops9h 19m
Delta
Fri 9/186:14 pm
COS
- PHL
1 stop9h 51m
Delta
Deal found 6/8![Delta logo]()
$315
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Sat 8/156:25 am
PHL
- MTJ
1 stop7h 23m
United Airlines
Sat 8/221:42 pm
MTJ
- PHL
2 stops9h 17m
United Airlines
Deal found 6/9![United Airlines logo]()
$348
This Southwest deal was found by Cheapflights users on 6/7. 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 7/289:35 am
PHL
- DEN
2 stops8h 00m
Southwest
Tue 8/411:15 am
DEN
- PHL
2 stops7h 40m
Southwest
Deal found 6/7![Southwest logo]()
$353
This Delta deal was found by Cheapflights users on 6/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/229:35 am
PHL
- COS
2 stops12h 01m
Delta
Tue 10/65:55 pm
COS
- PHL
2 stops13h 32m
Delta
Deal found 6/7![Delta logo]()
$343
This Delta deal was found by Cheapflights users on 6/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:17 pm
PHL
- DEN
1 stop7h 06m
Delta
Mon 8/312:50 am
DEN
- PHL
1 stop8h 15m
Delta
Deal found 6/7![Delta logo]()
$343
This American Airlines deal was found by Cheapflights users on 6/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/225:00 am
PHL
- EGE
1 stop6h 53m
American Airlines
Fri 6/262:12 pm
EGE
- PHL
1 stop6h 41m
American Airlines
Deal found 6/7![American Airlines logo]()
$463
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Tue 7/215:00 pm
PHL
- ASE
1 stop7h 00m
United Airlines
Tue 7/281:07 pm
ASE
- PHL
1 stop8h 23m
United Airlines
Deal found 6/9![United Airlines logo]()
$423
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 9/215:25 am
PHL
- COS
1 stop6h 20m
Southwest
Fri 9/256:30 am
COS
- PHL
2 stops9h 25m
Southwest
Deal found 6/10![Southwest logo]()
$385
This Delta deal was found by Cheapflights users on 6/8. 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.
Tue 10/1312:09 pm
PHL
- COS
2 stops12h 21m
Delta
Tue 10/208:00 am
COS
- PHL
2 stops13h 02m
Delta
Deal found 6/8![Delta logo]()
$344
This United Airlines deal was found by Cheapflights users on 6/7. 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.
Sat 8/156:16 am
PHL
- GUC
2 stops10h 18m
United Airlines
Sat 8/221:31 pm
GUC
- PHL
2 stops9h 28m
United Airlines
Deal found 6/7![United Airlines logo]()
$445
This Southwest deal was found by Cheapflights users on 6/6. 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 9/236:00 am
PHL
- COS
1 stop5h 50m
Southwest
Sun 9/2710:55 am
COS
- PHL
1 stop11h 15m
Southwest
Deal found 6/6![Southwest logo]()
$416
This Delta deal was found by Cheapflights users on 6/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/42:31 pm
PHL
- DEN
1 stop7h 21m
Delta
Sat 9/54:33 pm
DEN
- PHL
1 stop6h 46m
Delta
Deal found 6/9![Delta logo]()
$350
This American Airlines deal was found by Cheapflights users on 6/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/265:00 am
PHL
- ASE
1 stop7h 01m
American Airlines
Wed 8/57:30 am
ASE
- PHL
1 stop9h 18m
American Airlines
Deal found 6/9![American Airlines logo]()
$521
This United Airlines deal was found by Cheapflights users on 6/7. 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 8/2610:30 am
PHL
- GJT
2 stops12h 05m
United Airlines
Wed 9/21:40 pm
GJT
- PHL
2 stops9h 19m
United Airlines
Deal found 6/7![United Airlines logo]()
$461
This Delta deal was found by Cheapflights users on 6/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:15 am
PHL
- DEN
1 stop7h 48m
Delta
Mon 11/236:25 pm
DEN
- PHL
1 stop9h 16m
Delta
Deal found 6/9![Delta logo]()
$350
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
Sun 6/217:08 am
PHL
- MTJ
1 stop8h 21m
American Airlines
Sat 6/272:22 pm
MTJ
- PHL
1 stop8h 14m
American Airlines
Deal found 6/10![American Airlines logo]()
$523
Last-minute flights from Philadelphia to ColoradoDiscover last-minute flight deals from Philadelphia to Colorado. Data last updated June 11, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Colorado. Data last updated June 11, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 7/38:37 pm
PHL
- DEN
Nonstop4h 22m
Frontier
Tue 7/76:05 am
DEN
- PHL
Nonstop3h 44m
Frontier
Deal found 6/10![Frontier logo]()
$199
This Frontier deal was found by Cheapflights users on 6/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/38:37 pm
PHL
- DEN
Nonstop4h 22m
Frontier
Sat 7/46:05 am
DEN
- PHL
Nonstop3h 42m
Frontier
Deal found 6/9![Frontier logo]()
$214
This American Airlines deal was found by Cheapflights users on 6/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:39 pm
PHL
- COS
1 stop6h 44m
American Airlines
Tue 7/73:49 pm
COS
- PHL
1 stop6h 46m
American Airlines
Deal found 6/7![American Airlines logo]()
$333
This Expedia deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 7/98:37 pm
PHL
- DEN
Nonstop4h 27m
Multiple Airlines
Mon 7/1311:37 pm
DEN
- PHL
1 stop6h 53m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$205
This Super.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 7/108:37 pm
PHL
- DEN
Nonstop4h 27m
Frontier
Thu 7/1611:59 pm
DEN
- PHL
Nonstop3h 40m
Frontier
Deal found 6/10![Frontier logo]()
$208
This Cheapflightsfares deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 7/1012:54 pm
PHL
- DEN
Nonstop4h 14m
Frontier
Mon 7/136:05 am
DEN
- PHL
Nonstop3h 44m
Frontier
Deal found 6/10![Frontier logo]()
$210
This Super.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
Mon 7/138:37 pm
PHL
- DEN
Nonstop4h 27m
Frontier
Fri 7/2411:59 pm
DEN
- PHL
Nonstop3h 40m
Frontier
Deal found 6/10![Frontier logo]()
$209
This Expedia deal was found by Cheapflights users on 6/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2212:44 pm
PHL
- DEN
Nonstop4h 14m
Multiple Airlines
Tue 7/2811:37 pm
DEN
- PHL
1 stop6h 53m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$197
This Super.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
Wed 7/2212:44 pm
PHL
- DEN
Nonstop4h 14m
Frontier
Sun 7/266:05 am
DEN
- PHL
Nonstop3h 44m
Frontier
Deal found 6/10![Frontier logo]()
$202
This Super.com deal was found by Cheapflights users on 6/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2212:44 pm
PHL
- DEN
Nonstop4h 14m
Frontier
Tue 7/286:05 am
DEN
- PHL
Nonstop3h 44m
Frontier
Deal found 6/9![Frontier logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 7/2212:44 pm
PHL
- DEN
Nonstop4h 14m
Frontier
Wed 7/296:30 am
DEN
- PHL
1 stop13h 58m
Frontier
Deal found 6/10![Frontier logo]()
$212
This Cheapflightsfares deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 7/318:37 pm
PHL
- DEN
Nonstop4h 27m
Frontier
Fri 8/711:59 pm
DEN
- PHL
Nonstop3h 40m
Frontier
Deal found 6/10![Frontier logo]()
$207
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 June 11, 2026.
Search for one-way flight options from Philadelphia to Colorado. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
This Mytrip deal was found by Cheapflights users on 6/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1712:54 pm
PHL
- DEN
Nonstop4h 14m
Frontier
Deal found 6/9![Frontier logo]()
$118
This Delta deal was found by Cheapflights users on 6/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/47:20 am
PHL
- DEN
1 stop6h 44m
Delta
Deal found 6/9![Delta logo]()
$119
This Southwest deal was found by Cheapflights users on 6/9. 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 8/111:45 pm
PHL
- HDN
2 stops7h 35m
Southwest
Deal found 6/9![Southwest logo]()
$123
This Trip.com deal was found by Cheapflights users on 6/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/11:32 pm
PHL
- DEN
1 stop10h 56m
Frontier
Deal found 6/9![Frontier logo]()
$125
This Trip.com deal was found by Cheapflights users on 6/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/148:30 am
PHL
- DEN
1 stop15h 35m
Frontier
Deal found 6/9![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/44:30 pm
PHL
- DEN
2 stops29h 33m
Frontier
Deal found 6/10![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/289:08 pm
PHL
- DEN
1 stop20h 25m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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 7/48:30 am
PHL
- DEN
1 stop7h 29m
Frontier
Deal found 6/10![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Sat 7/181:32 pm
PHL
- DEN
1 stop10h 56m
Frontier
Deal found 6/9![Frontier logo]()
$130
This Frontier deal was found by Cheapflights users on 6/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/268:37 pm
PHL
- DEN
Nonstop4h 22m
Frontier
Deal found 6/9![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/274:40 pm
PHL
- DEN
1 stop23h 20m
Frontier
Deal found 6/8![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Thu 7/97:48 pm
PHL
- DEN
1 stop21h 35m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$134
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 June 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $197 (Expedia) |
One-way from | $118 (Mytrip) |
Popular in | June |
Cheapest in | August |
Average price | $449 |
Good round-trip deal | $345 or less |
Good one-way deal | $196 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 June 11, 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
Quickest round-trip
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Wed 8/19
6:00 am-7:55 am
Nonstop3h 55m
Denver Intl
Wed 8/26
6:10 pm-11:50 pm
Nonstop3h 40m
$206
PhiladelphiaHayden
PHL - HDN
PHLHDN
Philadelphia
Tue 8/25
10:45 am-7:20 pm
2 stops10h 35m
Hayden Yampa Valley
Tue 9/1
8:45 am-8:55 pm
2 stops10h 10m
$216
PhiladelphiaColorado Springs
PHL - COS
PHLCOS
Philadelphia
Tue 8/25
6:25 am-10:33 am
1 stop6h 08m
Colorado Springs
Tue 9/1
11:55 am-9:27 pm
1 stop7h 32m
$219
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Wed 8/12
5:15 am-11:25 am
1 stop8h 10m
Denver Intl
Wed 8/19
7:19 am-4:11 pm
1 stop6h 52m
$237
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Tue 8/18
1:45 pm-7:45 pm
2 stops8h 00m
Denver Intl
Tue 9/1
11:15 am-8:55 pm
2 stops7h 40m
$237
PhiladelphiaHayden
PHL - HDN
PHLHDN
Philadelphia
Tue 8/25
10:05 am-2:29 pm
1 stop6h 24m
Hayden Yampa Valley
Tue 9/1
1:30 pm-12:59 am
2 stops9h 29m
$250
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Sat 10/3
6:15 am-9:39 am
1 stop5h 24m
Denver Intl
Wed 10/7
10:30 am-7:24 pm
1 stop6h 54m
$253
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Thu 10/15
7:29 pm-12:23 am
1 stop6h 54m
Denver Intl
Wed 10/21
12:59 am-9:27 am
1 stop6h 28m
$269
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Tue 8/25
7:15 am-2:45 pm
2 stops9h 30m
Denver Intl
Sat 8/29
5:45 am-1:30 pm
1 stop5h 45m
$274
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Sat 10/17
6:13 pm-12:23 am
1 stop8h 10m
Denver Intl
Mon 10/19
3:10 pm-10:56 pm
1 stop5h 46m
$302
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-HDN
PHL-MTJ
PHL-GJT
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-HDN
PHL-MTJ
What is the cheapest month to book a flight from Philadelphia to Colorado?
Currently, December is the cheapest month in which you can book a flight from Philadelphia to Colorado (average of $77). Flying from Philadelphia to Colorado in January is currently the most expensive (average of $590). 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 June 11, 2026.
It’s optimal to fly from Philadelphia to Colorado in the evening. By choosing this option you can save up to 36% on the cost of your flight, compared to a flight in the afternoon.
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 June 11, 2026.
The most flights from PHL to USCO are scheduled on a Thursday (17 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).
How much does it cost to fly round-trip from Philadelphia to Colorado?
How far ahead should I book a flight from Philadelphia to Colorado?
To ensure you get the cheapest price possible for a flight from Philadelphia to Colorado, you should look to book at least 11 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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 June 8, 2026.
Travelers seeking maximum savings on their Philadelphia to Colorado flight should consider departing on Tuesday evenings when fares are most often at their lowest. Tuesday at noon 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 June 11, 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.
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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 June 11, 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 6 airlines flying from Philadelphia to Colorado
Discover the top 6 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 June 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$99 | Average$232 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$187 | Average$465 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$196 | Average$473 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$212 | Average$460 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$220 | Average$308 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$237 | Average$471 | FlexibilityNo cancel fee | On-timeN/A |