$136+ Cheap flights from Philadelphia (PHL) to Fort Collins, CO
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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
Oct 11 — Oct 181
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Philadelphia to Fort Collins with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Philadelphia to Fort Collins are usually found in January or April, booked 28 days in advance, depart on a Saturday or Friday and return on a Thursday
Cheap flight deals from Philadelphia to Fort Collins
Cheapest
Best
Last-minute
One-way
Cheapest flights from Philadelphia to Fort CollinsExplore the most affordable flight options available from Philadelphia to Fort Collins. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
Explore the most affordable flight options available from Philadelphia to Fort Collins. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
This Frontier deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/115:50 am -
Nonstop4h 10m
Tue 10/206:56 pm -
1 stop27h 42m
Deal found 9/6![Frontier logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:39 am -
1 stop14h 53m
Sat 11/710:48 am -
2 stops10h 36m
Deal found 9/7![Frontier logo]()
$222
This Cheapflightsfares deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1012:35 pm -
1 stop10h 56m
Fri 10/166:57 pm -
1 stop10h 24m
Deal found 9/7![Frontier logo]()
$223
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:41 am -
1 stop14h 22m
Wed 10/146:12 pm -
Nonstop3h 38m
Deal found 9/7![Frontier logo]()
$225
This Cheapflightsfares deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:40 pm -
1 stop10h 23m
Fri 10/27:10 pm -
1 stop10h 06m
Deal found 9/6![Frontier logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/85:50 am -
Nonstop4h 10m
Sat 10/107:37 pm -
Nonstop3h 39m
Deal found 9/8![Frontier logo]()
$228
This Cheapflightsfares deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:50 am -
Nonstop4h 10m
Sun 10/258:55 pm -
1 stop21h 09m
Deal found 9/9![Frontier logo]()
$229
This Cheapflightsfares deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:40 pm -
1 stop10h 23m
Sat 10/107:28 am -
1 stop21h 50m
Deal found 9/6![Frontier logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:30 am -
1 stop15h 01m
Mon 10/126:57 pm -
1 stop10h 24m
Deal found 9/7![Frontier logo]()
$231
This Expedia deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:40 pm -
1 stop10h 23m
Tue 10/1311:21 am -
1 stop26h 13m
Deal found 9/6![Frontier logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:40 pm -
2 stops11h 09m
Thu 10/157:37 pm -
Nonstop3h 39m
Deal found 9/8![Frontier logo]()
$233
This Cheapflightsfares deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 9/7![Frontier logo]()
$234
Best flights from Philadelphia to Fort CollinsDiscover carefully curated flight deals from Philadelphia to Fort Collins that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
Discover carefully curated flight deals from Philadelphia to Fort Collins that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:00 am -
Nonstop4h 02m
Mon 10/125:37 pm -
Nonstop3h 43m
Deal found 9/8![United Airlines logo]()
$330
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:00 am -
Nonstop4h 15m
Mon 11/96:45 pm -
Nonstop3h 20m
Deal found 9/8![Southwest logo]()
$332
This Delta deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/107:00 am -
1 stop10h 09m
Mon 2/1512:59 am -
1 stop6h 28m
Deal found 9/8![Delta logo]()
$341
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 10/233:55 pm -
Nonstop4h 12m
Mon 10/263:01 pm -
1 stop6h 09m
Deal found 9/10![United Airlines logo]()
$342
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/315:00 am -
Nonstop4h 05m
Sun 11/86:45 pm -
Nonstop3h 20m
Deal found 9/8![Southwest logo]()
$364
This Delta deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/266:15 am -
1 stop7h 48m
Sat 3/66:05 am -
1 stop6h 54m
Deal found 9/8![Delta logo]()
$383
This Southwest deal was found by Cheapflights users on 9/10. 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.
Thu 11/51:50 pm -
2 stops8h 15m
Mon 11/912:15 pm -
2 stops9h 00m
Deal found 9/10![Southwest logo]()
$394
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/33:52 pm -
Nonstop4h 07m
Sat 10/105:37 pm -
Nonstop3h 43m
Deal found 9/6![United Airlines logo]()
$415
This Delta deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/75:30 am -
1 stop8h 24m
Tue 1/123:10 pm -
1 stop7h 41m
Deal found 9/6![Delta logo]()
$445
This Southwest deal was found by Cheapflights users on 9/10. 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 10/265:10 pm -
2 stops10h 30m
Wed 10/2811:55 am -
2 stops7h 10m
Deal found 9/10![Southwest logo]()
$414
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:10 pm -
2 stops10h 30m
Sun 10/2512:30 pm -
2 stops10h 30m
Deal found 9/6![Southwest logo]()
$479
This Southwest deal was found by Cheapflights users on 9/10. 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.
Fri 10/165:10 pm -
2 stops10h 30m
Sun 10/1812:30 pm -
2 stops9h 20m
Deal found 9/10![Southwest logo]()
$479
Last-minute flights from Philadelphia to Fort CollinsDiscover last-minute flight deals from Philadelphia to Fort Collins. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Fort Collins. Data last updated September 11, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:40 pm -
1 stop10h 23m
Fri 10/27:10 pm -
1 stop10h 06m
Deal found 9/6![Frontier logo]()
$226
This Expedia deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:40 pm -
1 stop10h 23m
Tue 10/1311:21 am -
1 stop26h 13m
Deal found 9/6![Frontier logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:40 pm -
2 stops11h 09m
Thu 10/157:37 pm -
Nonstop3h 39m
Deal found 9/8![Frontier logo]()
$233
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:41 am -
1 stop14h 22m
Wed 10/146:12 pm -
Nonstop3h 38m
Deal found 9/7![Frontier logo]()
$225
This Cheapflightsfares deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:40 pm -
1 stop10h 23m
Sat 10/107:28 am -
1 stop21h 50m
Deal found 9/6![Frontier logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/85:50 am -
Nonstop4h 10m
Sat 10/107:37 pm -
Nonstop3h 39m
Deal found 9/8![Frontier logo]()
$228
This Cheapflightsfares deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1012:35 pm -
1 stop10h 56m
Fri 10/166:57 pm -
1 stop10h 24m
Deal found 9/7![Frontier logo]()
$223
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:30 am -
1 stop15h 01m
Mon 10/126:57 pm -
1 stop10h 24m
Deal found 9/7![Frontier logo]()
$231
This Frontier deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/115:50 am -
Nonstop4h 10m
Tue 10/206:56 pm -
1 stop27h 42m
Deal found 9/6![Frontier logo]()
$220
This Cheapflightsfares deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 9/7![Frontier logo]()
$234
This Cheapflightsfares deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:50 am -
Nonstop4h 10m
Sun 10/258:55 pm -
1 stop21h 09m
Deal found 9/9![Frontier logo]()
$229
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:39 am -
1 stop14h 53m
Sat 11/710:48 am -
2 stops10h 36m
Deal found 9/7![Frontier logo]()
$222
One-way flights from Philadelphia to Fort CollinsSearch for one-way flight options from Philadelphia to Fort Collins. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
Search for one-way flight options from Philadelphia to Fort Collins. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:42 pm -
2 stops28h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:41 am -
1 stop25h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1312:35 pm -
2 stops21h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.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 9/8![Frontier logo]()
$141
This Frontier deal was found by Cheapflights users on 9/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/62:45 pm -
1 stop8h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” 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 10/2212:17 pm -
1 stop11h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/205:22 pm -
2 stops16h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3010:49 am -
2 stops36h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/295:32 pm -
2 stops30h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$147
This Frontier deal was found by Cheapflights users on 9/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1912:35 pm -
1 stop10h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:59 pm -
2 stops27h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$149
Find flight deals from Philadelphia to Fort Collins
Keep the following information in mind while searching for Philadelphia to Fort Collins flight deals. Data was last updated September 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $220 (Frontier) |
One-way from | $136 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $408 |
Cheapflights Fare Finder
Customize your flight search to find flights from Philadelphia to Fort Collins that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 11, 2026.
Use the filters below to find and compare flights from Philadelphia to Fort Collins that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Tue 10/27
7:45 am-10:05 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
Tue 10/27
6:35 pm-10:30 pm
1 stop5h 55m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$171
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Fri 1/1
3:50 pm-6:17 pm
Nonstop4h 27m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$172
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Wed 12/16
7:30 am-3:55 pm
2 stops10h 25m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$176
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Wed 12/9
7:30 am-3:55 pm
2 stops10h 25m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$197
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Tue 3/9
7:00 am-3:09 pm
1 stop10h 09m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$202
Quickest round-trip
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Mon 10/19
10:05 am-12:10 pm
Nonstop4h 05m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$224
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Tue 9/29
3:52 pm-5:59 pm
Nonstop4h 07m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$224
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Sat 11/14
10:00 am-12:20 pm
Nonstop4h 20m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$242
PhiladelphiaDenver
PHL Philadelphia - DEN Denver Intl
PHLDEN
Philadelphia
Tue 12/8
9:55 am-12:15 pm
Nonstop4h 20m
Denver Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$242
Showing 1-10 of 24 resultsSorted by cheapest first
Best time to book a flight from Philadelphia to Fort Collins
Have a flexible travel schedule? Discover the best time to fly to Fort Collins from Philadelphia with our price prediction graph.
PHL-DEN
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 Fort Collins
PHL-FC9
PHL-DEN
What is the cheapest time of day to fly from PHL to FC9?
Find hourly flight availability from Philadelphia to Fort Collins. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2026.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 39% on flights from Philadelphia to Fort Collins by exploring options for tickets in the evening.
Weekly flight availability from Philadelphia to Fort Collins
Explore weekly flight availability from Philadelphia to Fort Collins. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 11, 2026.
The most flights from PHL to FC9 are scheduled on a Wednesday (14 on average). You will have fewer flight options on Saturday, 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 Fort Collins?
Airfare is below average for this route at the moment.
Philadelphia to Fort Collins flights typically cost between $326 and $474 in October.The cheapest round-trip price found within the last 5 days was $220 on Frontier (Oct 11-Oct 20).
What is the cheapest day to fly from Philadelphia to Fort Collins?
Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Fort Collins. Price data was last updated on September 5, 2026.
Travelers seeking maximum savings on their Philadelphia to Fort Collins 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 Fort Collins
Get insights into the airlines that provide service to Fort Collins. 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 Fort Collins. Reviews last updated September 11, 2026.
Get a feel of what it's like to fly with Southwest,United Airlines, andAmerican Airlines from Philadelphia to Fort Collins by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
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 Fort Collins. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Philadelphia
Popular flights
Top destinations
Alternative routes for Philadelphia to Fort Collins
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Fort Collins by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Philadelphia to Fort Collins by cabin class
Find flights from Philadelphia to Fort Collins, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Philadelphia and Fort Collins flights
Browse other Philadelphia and Fort Collins flight options. Last updated on September 11, 2026.
Other flights from Philadelphia
Browse through other flights departing from Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on September 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Philadelphia to Fort Collins flights
Consider these flights traveling from Philadelphia to Fort Collins.
Top 6 airlines flying from Philadelphia to Fort Collins
Discover the top 6 airlines that operate flights from Philadelphia to Fort Collins. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$97 | Average$262 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$199 | Average$433 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$220 | Average$312 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$225 | Average$439 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$387 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$249 | Average$441 | FlexibilityNo cancel fee | On-time63% |