$158+ Cheap flights from Philadelphia (PHL) to Colorado
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
Nov 1 — Nov 81
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia to Colorado with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 October 2, 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 October 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:22 pm -
2 stops24h 32m
Tue 11/36:31 pm -
1 stop10h 50m
Deal found 10/1![Frontier logo]()
$246
This Cheapflightsfares deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/239:09 pm -
1 stop13h 10m
Mon 10/266:57 pm -
1 stop10h 24m
Deal found 10/1![Frontier logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:44 pm -
2 stops23h 05m
Sat 10/247:37 pm -
Nonstop3h 39m
Deal found 10/1![Frontier logo]()
$250
This CheapOair deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:44 pm -
1 stop23h 02m
Mon 10/266:57 pm -
1 stop10h 24m
Deal found 10/1![Frontier logo]()
$252
This Frontier deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/219:47 pm -
1 stop26h 55m
Fri 11/277:50 pm -
1 stop8h 11m
Deal found 10/1![Frontier logo]()
$253
This Kiwi.com deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/212:10 pm -
1 stop22h 20m
Thu 11/59:19 pm -
2 stops17h 24m
Deal found 10/1![Frontier logo]()
$254
This Cheapflightsfares deal was found by Cheapflights users on 9/30. 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 10/239:09 pm -
1 stop13h 10m
Sun 10/257:37 pm -
Nonstop3h 39m
Deal found 9/30![Frontier logo]()
$255
This Cheapflightsfares deal was found by Cheapflights users on 9/30. 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.
Sat 10/175:50 am -
Nonstop4h 10m
Wed 10/216:12 pm -
Nonstop3h 38m
Deal found 9/30![Frontier logo]()
$256
This Kiwi.com deal was found by Cheapflights users on 9/30. 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.
Sat 10/176:00 am -
1 stop7h 22m
Tue 10/209:19 pm -
2 stops31h 52m
Deal found 9/30![Frontier logo]()
$257
This Cheapflightsfares deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/49:30 am -
1 stop13h 16m
Sun 11/87:09 pm -
1 stop19h 34m
Deal found 10/1![Frontier logo]()
$259
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Wed 11/45:30 pm -
1 stop7h 31m
Wed 11/111:34 pm -
1 stop8h 45m
Deal found 9/29![American Airlines logo]()
$351
This Southwest deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/45:00 am -
2 stops10h 00m
Wed 11/114:15 pm -
1 stop5h 15m
Deal found 9/29![Southwest logo]()
$356
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 October 2, 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 October 2, 2026.
This United Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3110:00 am -
Nonstop4h 20m
Sat 11/146:08 pm -
Nonstop3h 31m
Deal found 9/30![United Airlines logo]()
$321
This Southwest deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:20 pm -
1 stop6h 20m
Mon 12/76:00 pm -
Nonstop3h 25m
Deal found 10/1![Southwest logo]()
$331
This Delta deal was found by Cheapflights users on 9/27. 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 10/276:10 am -
2 stops8h 20m
Tue 11/31:31 pm -
1 stop8h 18m
Deal found 9/27![Delta logo]()
$356
This American Airlines deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/295:00 am -
1 stop9h 24m
Tue 11/311:59 am -
1 stop7h 04m
Deal found 10/2![American Airlines logo]()
$368
This United Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:41 am -
Nonstop4h 20m
Mon 12/76:10 pm -
Nonstop3h 31m
Deal found 9/30![United Airlines logo]()
$321
This Delta deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/49:48 am -
2 stops12h 28m
Mon 11/96:08 pm -
1 stop9h 47m
Deal found 10/1![Delta logo]()
$356
This Southwest deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/45:00 am -
2 stops10h 00m
Wed 11/114:15 pm -
1 stop5h 15m
Deal found 9/29![Southwest logo]()
$356
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Tue 10/273:35 pm -
Nonstop4h 20m
Wed 10/289:52 am -
1 stop5h 55m
Deal found 9/28![United Airlines logo]()
$331
This Delta deal was found by Cheapflights users on 9/28. 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 2/166:00 am -
2 stops10h 34m
Tue 3/23:35 pm -
1 stop7h 16m
Deal found 9/28![Delta logo]()
$366
This Southwest deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:00 am -
Nonstop4h 15m
Sun 11/156:30 am -
1 stop5h 20m
Deal found 9/28![Southwest logo]()
$384
This American Airlines deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” 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 1/2412:34 pm -
1 stop10h 01m
Thu 1/281:47 pm -
1 stop6h 50m
Deal found 10/2![American Airlines logo]()
$435
This United Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:45 am -
Nonstop4h 20m
Sun 11/86:08 pm -
Nonstop3h 31m
Deal found 9/30![United Airlines logo]()
$364
This Delta deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/213:46 pm -
1 stop6h 30m
Fri 10/236:07 pm -
1 stop9h 58m
Deal found 9/30![Delta logo]()
$370
This Southwest deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” 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 11/75:20 am -
1 stop6h 15m
Sat 11/1410:10 am -
2 stops6h 55m
Deal found 10/2![Southwest logo]()
$388
This American Airlines deal was found by Cheapflights users on 9/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/256:00 am -
1 stop9h 41m
Fri 1/297:40 am -
1 stop8h 12m
Deal found 9/27![American Airlines logo]()
$435
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/41:16 pm -
1 stop6h 57m
Sun 11/86:08 pm -
Nonstop3h 31m
Deal found 10/1![United Airlines logo]()
$370
This Southwest deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:40 am -
2 stops10h 10m
Mon 11/98:25 am -
1 stop6h 10m
Deal found 9/28![Southwest logo]()
$398
This Delta deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:20 am -
1 stop9h 10m
Sun 11/18:17 am -
1 stop7h 22m
Deal found 9/29![Delta logo]()
$411
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/410:53 am -
2 stops12h 07m
Wed 12/97:00 am -
1 stop6h 51m
Deal found 10/1![United Airlines logo]()
$374
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:00 am -
1 stop7h 31m
Tue 10/201:09 pm -
1 stop9h 16m
Deal found 9/30![American Airlines logo]()
$459
This Southwest deal was found by Cheapflights users on 9/30. 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.
Fri 11/612:10 pm -
1 stop9h 40m
Fri 11/138:25 am -
1 stop9h 00m
Deal found 9/30![Southwest logo]()
$412
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Thu 11/127:45 am -
1 stop6h 54m
Sun 11/151:32 pm -
1 stop8h 07m
Deal found 9/29![United Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 9/28. 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.
Sun 2/218:25 am -
1 stop8h 09m
Mon 3/13:35 pm -
1 stop7h 16m
Deal found 9/28![Delta logo]()
$427
This American Airlines deal was found by Cheapflights users on 9/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/174:20 pm -
1 stop7h 46m
Sat 11/2112:56 pm -
1 stop9h 19m
Deal found 9/27![American Airlines logo]()
$505
This Southwest deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/214:35 pm -
Nonstop4h 10m
Fri 11/276:45 pm -
Nonstop3h 25m
Deal found 9/30![Southwest logo]()
$419
This Delta deal was found by Cheapflights users on 9/28. 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 10/176:00 am -
2 stops13h 27m
Tue 10/206:00 am -
2 stops11h 18m
Deal found 9/28![Delta logo]()
$435
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:45 am -
1 stop6h 51m
Fri 11/131:40 pm -
1 stop7h 59m
Deal found 10/1![United Airlines logo]()
$401
This Southwest deal was found by Cheapflights users on 9/27. 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 11/128:15 pm -
1 stop6h 10m
Sun 11/152:10 pm -
2 stops8h 00m
Deal found 9/27![Southwest logo]()
$421
This Delta deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1712:32 pm -
2 stops9h 44m
Sat 10/248:17 am -
2 stops12h 51m
Deal found 10/1![Delta logo]()
$435
This American Airlines deal was found by Cheapflights users on 9/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1312:34 pm -
1 stop9h 50m
Tue 12/151:00 pm -
2 stops8h 34m
Deal found 9/27![American Airlines logo]()
$546
Last-minute flights from Philadelphia to ColoradoDiscover last-minute flight deals from Philadelphia to Colorado. Data last updated October 2, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Colorado. Data last updated October 2, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 9/30. 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.
Sat 10/175:50 am -
Nonstop4h 10m
Wed 10/216:12 pm -
Nonstop3h 38m
Deal found 9/30![Frontier logo]()
$256
This Kiwi.com deal was found by Cheapflights users on 9/30. 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.
Sat 10/176:00 am -
1 stop7h 22m
Tue 10/209:19 pm -
2 stops31h 52m
Deal found 9/30![Frontier logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:22 pm -
2 stops24h 32m
Tue 11/36:31 pm -
1 stop10h 50m
Deal found 10/1![Frontier logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:44 pm -
2 stops23h 05m
Sat 10/247:37 pm -
Nonstop3h 39m
Deal found 10/1![Frontier logo]()
$250
This CheapOair deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:44 pm -
1 stop23h 02m
Mon 10/266:57 pm -
1 stop10h 24m
Deal found 10/1![Frontier logo]()
$252
This Cheapflightsfares deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/239:09 pm -
1 stop13h 10m
Mon 10/266:57 pm -
1 stop10h 24m
Deal found 10/1![Frontier logo]()
$248
This Cheapflightsfares deal was found by Cheapflights users on 9/30. 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 10/239:09 pm -
1 stop13h 10m
Sun 10/257:37 pm -
Nonstop3h 39m
Deal found 9/30![Frontier logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/212:10 pm -
1 stop22h 20m
Thu 11/59:19 pm -
2 stops17h 24m
Deal found 10/1![Frontier logo]()
$254
This Cheapflightsfares deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/49:30 am -
1 stop13h 16m
Sun 11/87:09 pm -
1 stop19h 34m
Deal found 10/1![Frontier logo]()
$259
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Wed 11/45:30 pm -
1 stop7h 31m
Wed 11/111:34 pm -
1 stop8h 45m
Deal found 9/29![American Airlines logo]()
$351
This Delta deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/49:48 am -
2 stops12h 28m
Mon 11/96:08 pm -
1 stop9h 47m
Deal found 10/1![Delta logo]()
$356
This Frontier deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/219:47 pm -
1 stop26h 55m
Fri 11/277:50 pm -
1 stop8h 11m
Deal found 10/1![Frontier logo]()
$253
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 October 2, 2026.
Search for one-way flight options from Philadelphia to Colorado. Find affordable one-way fares based on user searches. Data last updated October 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:26 pm -
2 stops42h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Frontier logo]()
$158
This Booking.com deal was found by Cheapflights users on 9/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/165:50 am -
Nonstop4h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/288:30 am -
2 stops16h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Frontier logo]()
$160
This Southwest deal was found by Cheapflights users on 9/30. 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 10/285:30 am -
Nonstop4h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Southwest logo]()
$161
This Frontier deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:00 am -
1 stop7h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Frontier logo]()
$162
This CheapOair deal was found by Cheapflights users on 9/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:50 am -
Nonstop4h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Frontier logo]()
$164
This Super.com deal was found by Cheapflights users on 9/29. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/302:55 pm -
Nonstop4h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Frontier logo]()
$167
This Super.com deal was found by Cheapflights users on 9/30. 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.
Thu 10/85:50 am -
Nonstop4h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Frontier logo]()
$169
This Super.com deal was found by Cheapflights users on 9/30. 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 10/105:50 am -
Nonstop4h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Frontier logo]()
$170
This United Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:45 am -
Nonstop4h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![United Airlines logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 9/27. 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.
Wed 11/1112:36 pm -
2 stops25h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$182
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Tue 12/226:24 am -
1 stop6h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![United Airlines logo]()
$200
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 October 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $246 (Kiwi.com) |
One-way from | $158 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $410 |
Good round-trip deal | $376 or less |
Good one-way deal | $227 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 7,457,451 searches. Data last updated October 2, 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 Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Tue 1/5
8:00 am-10:05 am
Nonstop4h 05m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$161
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Tue 1/12
4:40 pm-7:05 pm
Nonstop4h 25m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$161
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Tue 11/3
3:35 pm-5:55 pm
Nonstop4h 20m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$161
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Wed 12/9
5:00 am-7:20 am
Nonstop4h 20m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$161
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Sat 1/16
1:00 pm-5:30 pm
1 stop6h 30m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$171
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Tue 1/26
6:10 am-10:00 am
1 stop5h 50m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$171
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Thu 10/29
5:10 pm-1:40 am
2 stops10h 30m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$176
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Sun 11/15
10:00 am-10:35 am
1 stop26h 35m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$178
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Fri 10/23
5:10 pm-1:40 am
2 stops10h 30m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$186
PhiladelphiaHayden
PHL Philadelphia - HDN Hayden Yampa Valley
PHLHDN
Philadelphia
Tue 12/22
6:24 am-11:08 am
1 stop6h 44m
Hayden Yampa Valley
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$200
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-DRO
PHL-EGE
PHL-ASE
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-DRO
PHL-EGE
What is the cheapest month to book a flight from Philadelphia to Colorado?
Currently, April is the cheapest month in which you can book a flight from Philadelphia to Colorado (average of $337). Flying from Philadelphia to Colorado in June is currently the most expensive (average of $482). 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 October 2, 2026.
It’s optimal to fly from Philadelphia to Colorado in the evening. By choosing this option you can save up to 39% 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 October 2, 2026.
The most flights from PHL to USCO are scheduled on a Thursday (16 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).
How much does it cost to fly round-trip from Philadelphia to Colorado?
Airfare is below average for this route at the moment.
Philadelphia to Colorado flights typically cost between $283 and $496 in October.The cheapest round-trip price found within the last 5 days was $246 on Frontier (Oct 20-Nov 3).
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 30 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 September 26, 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. Sunday afternoons 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 October 2, 2026.
Peruse reviews from past customers who have flown with Southwest,United Airlines, andJetBlue 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.
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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
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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 October 2, 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 7,457,451 searches. Data last updated October 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$97 | Average$264 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$187 | Average$490 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$209 | Average$486 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$220 | Average$338 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$233 | Average$486 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$480 | FlexibilityNo cancel fee | On-timeN/A |