$84+ Cheap flights from Philadelphia (PHL) to Fort Collins, CO
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
May 22 — May 291
Round-trip
1 adult, Economy
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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 August or July, booked 28 days in advance, depart on a Friday or Thursday 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 April 22, 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 April 22, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” 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 5/308:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Fri 6/57:40 am
DEN
- PHL
1 stop15h 26m
Frontier
Deal found 4/19![Frontier logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” 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 5/278:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Fri 6/57:01 pm
DEN
- PHL
1 stop9h 29m
Frontier
Deal found 4/19![Frontier logo]()
$121
This Super.com deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” 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 5/88:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Sat 5/911:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/19![Frontier logo]()
$122
This Cheapflightsfares deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/138:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Mon 5/187:15 am
DEN
- PHL
1 stop15h 51m
Frontier
Deal found 4/17![Frontier logo]()
$123
This Cheapflightsfares deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/98:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Tue 5/1211:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/21![Frontier logo]()
$124
This Cheapflightsfares deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/298:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Wed 6/311:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/20![Frontier logo]()
$125
This Frontier deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” 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
Tue 7/710:00 am
DEN
- PHL
1 stop7h 03m
Frontier
Deal found 4/18![Frontier logo]()
$126
This Cheapflightsfares deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/28:41 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Sat 5/911:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/21![Frontier logo]()
$127
This Cheapflightsfares deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/208:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Fri 5/2911:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/21![Frontier logo]()
$128
This Cheapflightsfares deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/88:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Wed 5/139:15 am
DEN
- PHL
1 stop21h 39m
Frontier
Deal found 4/20![Frontier logo]()
$130
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 April 22, 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 April 22, 2026.
This United Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/68:00 am
PHL
- DEN
Nonstop4h 20m
United Airlines
Sat 5/94:45 pm
DEN
- PHL
1 stop6h 14m
United Airlines
Deal found 4/17![United Airlines logo]()
$309
This Southwest deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/75:40 am
PHL
- DEN
Nonstop4h 05m
Southwest
Sun 5/107:45 pm
DEN
- PHL
Nonstop3h 30m
Southwest
Deal found 4/19![Southwest logo]()
$377
This Southwest deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/282:15 pm
PHL
- DEN
2 stops7h 05m
Southwest
Mon 6/112:50 pm
DEN
- PHL
2 stops6h 55m
Southwest
Deal found 4/21![Southwest logo]()
$452
This Southwest deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” 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 5/82:15 pm
PHL
- DEN
2 stops7h 05m
Southwest
Mon 5/117:00 am
DEN
- PHL
2 stops7h 45m
Southwest
Deal found 4/18![Southwest logo]()
$452
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/86:00 pm
PHL
- DEN
1 stop7h 55m
Southwest
Thu 6/112:20 pm
DEN
- PHL
2 stops8h 00m
Southwest
Deal found 4/22![Southwest logo]()
$463
This Southwest deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” 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 5/44:30 pm
PHL
- DEN
2 stops8h 30m
Southwest
Thu 5/142:30 pm
DEN
- PHL
1 stop7h 15m
Southwest
Deal found 4/19![Southwest logo]()
$497
This Southwest deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/149:35 am
PHL
- DEN
2 stops8h 00m
Southwest
Tue 7/2112:20 pm
DEN
- PHL
2 stops7h 00m
Southwest
Deal found 4/20![Southwest logo]()
$499
This Southwest deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:55 am
PHL
- DEN
2 stops8h 40m
Southwest
Mon 5/256:20 am
DEN
- PHL
2 stops7h 30m
Southwest
Deal found 4/17![Southwest logo]()
$512
This Southwest deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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 6/2312:55 pm
PHL
- DEN
2 stops7h 45m
Southwest
Sat 6/2712:05 pm
DEN
- PHL
2 stops6h 50m
Southwest
Deal found 4/17![Southwest logo]()
$513
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/812:55 pm
PHL
- DEN
2 stops7h 45m
Southwest
Mon 7/132:20 pm
DEN
- PHL
2 stops8h 00m
Southwest
Deal found 4/22![Southwest logo]()
$513
This Southwest deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/219:35 am
PHL
- DEN
2 stops8h 00m
Southwest
Fri 7/242:20 pm
DEN
- PHL
2 stops8h 00m
Southwest
Deal found 4/21![Southwest logo]()
$513
This Southwest deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/258:05 am
PHL
- DEN
2 stops9h 05m
Southwest
Tue 6/3012:20 pm
DEN
- PHL
2 stops7h 00m
Southwest
Deal found 4/21![Southwest logo]()
$540
Last-minute flights from Philadelphia to Fort CollinsDiscover last-minute flight deals from Philadelphia to Fort Collins. Data last updated April 22, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Fort Collins. Data last updated April 22, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/28:41 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Sat 5/911:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/21![Frontier logo]()
$127
This Frontier deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/64:35 pm
PHL
- DEN
1 stop7h 49m
Frontier
Fri 5/1511:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/20![Frontier logo]()
$131
This Super.com deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” 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 5/88:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Sat 5/911:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/19![Frontier logo]()
$122
This Cheapflightsfares deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/88:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Tue 5/127:15 am
DEN
- PHL
1 stop8h 31m
Frontier
Deal found 4/20![Frontier logo]()
$130
This Frontier deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” 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 5/98:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Fri 5/1511:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/19![Frontier logo]()
$123
This Cheapflightsfares deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/98:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Tue 5/1211:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/21![Frontier logo]()
$124
This Frontier deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:37 am
PHL
- DEN
1 stop8h 54m
Frontier
Tue 5/1911:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/19![Frontier logo]()
$126
This Cheapflightsfares deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/208:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Wed 5/2711:59 pm
DEN
- PHL
Nonstop3h 38m
Frontier
Deal found 4/20![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” 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 5/278:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Fri 6/57:01 pm
DEN
- PHL
1 stop9h 29m
Frontier
Deal found 4/19![Frontier logo]()
$121
This Cheapflightsfares deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/298:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Wed 6/36:00 am
DEN
- PHL
1 stop10h 40m
Frontier
Deal found 4/20![Frontier logo]()
$125
This Cheapflightsfares deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” 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 5/308:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Fri 6/57:40 am
DEN
- PHL
1 stop15h 26m
Frontier
Deal found 4/19![Frontier logo]()
$119
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 April 22, 2026.
Search for one-way flight options from Philadelphia to Fort Collins. Find affordable one-way fares based on user searches. Data last updated April 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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 5/185:32 pm
PHL
- DEN
1 stop17h 25m
Frontier
Deal found 4/17![Frontier logo]()
$84
This Super.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/149:05 pm
PHL
- DEN
1 stop28h 06m
Frontier
Deal found 4/21![Frontier logo]()
$85
This Super.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” 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.
Sun 5/174:24 pm
PHL
- DEN
1 stop30h 26m
Frontier
Deal found 4/18![Frontier logo]()
$86
This Super.com deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” 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.
Sun 5/35:05 am
PHL
- DEN
1 stop19h 54m
Frontier
Deal found 4/19![Frontier logo]()
$90
This Frontier deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/158:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Deal found 4/17![Frontier logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/115:32 pm
PHL
- DEN
2 stops39h 01m
Frontier
Deal found 4/22![Frontier logo]()
$95
This Super.com deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/138:35 am
PHL
- DEN
1 stop8h 13m
Frontier
Deal found 4/20![Frontier logo]()
$99
This Cheapflightsfares deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/218:30 am
PHL
- DEN
1 stop7h 29m
Frontier
Deal found 4/19![Frontier logo]()
$100
This Super.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” 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 5/208:35 pm
PHL
- DEN
Nonstop4h 29m
Frontier
Deal found 4/18![Frontier logo]()
$101
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 April 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $119 (Cheapflightsfares) |
One-way from | $84 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $320 |
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 2,558,603 searches. Data last updated April 22, 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 - DEN
PHLDEN
Philadelphia
Wed 5/6
8:00 am-10:20 am
Nonstop4h 20m
Denver Intl
Sat 5/9
4:45 pm-12:59 am
1 stop6h 14m
$309
Quickest round-trip
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Thu 5/7
5:40 am-7:45 am
Nonstop4h 05m
Denver Intl
Sun 5/10
7:45 pm-1:15 am
Nonstop3h 30m
$377
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Thu 5/28
2:15 pm-7:20 pm
2 stops7h 05m
Denver Intl
Mon 6/1
12:50 pm-9:45 pm
2 stops6h 55m
$452
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Fri 5/8
2:15 pm-7:20 pm
2 stops7h 05m
Denver Intl
Mon 5/11
7:00 am-4:45 pm
2 stops7h 45m
$452
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Mon 6/8
6:00 pm-11:55 pm
1 stop7h 55m
Denver Intl
Thu 6/11
2:20 pm-12:20 am
2 stops8h 00m
$463
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Mon 5/4
4:30 pm-11:00 pm
2 stops8h 30m
Denver Intl
Thu 5/14
2:30 pm-11:45 pm
1 stop7h 15m
$497
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Tue 7/14
9:35 am-3:35 pm
2 stops8h 00m
Denver Intl
Tue 7/21
12:20 pm-9:20 pm
2 stops7h 00m
$499
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Thu 5/21
7:55 am-2:35 pm
2 stops8h 40m
Denver Intl
Mon 5/25
6:20 am-3:50 pm
2 stops7h 30m
$512
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Tue 6/23
12:55 pm-6:40 pm
2 stops7h 45m
Denver Intl
Sat 6/27
12:05 pm-8:55 pm
2 stops6h 50m
$513
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Wed 7/8
12:55 pm-6:40 pm
2 stops7h 45m
Denver Intl
Mon 7/13
2:20 pm-12:20 am
2 stops8h 00m
$513
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
How far ahead should I book a flight from Philadelphia to Fort Collins?
Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to Fort Collins. Price data was last updated on April 17, 2026.
To ensure you get the cheapest price possible for a flight from Philadelphia to Fort Collins, you should look to book at least 28 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 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 April 22, 2026.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 34% on flights from Philadelphia to Fort Collins by exploring options for tickets in the evening.
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 April 18, 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.
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 April 22, 2026.
The most flights from PHL to FC9 are scheduled on a Monday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).
How much does it cost to fly round-trip from Philadelphia to Fort Collins?
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 April 22, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited 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.
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Philadelphia to Fort Collins. 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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Complete your trip
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Search flights from Philadelphia to Fort Collins by cabin class
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Philadelphia and Fort Collins flights
Browse other Philadelphia and Fort Collins flight options. Last updated on April 22, 2026.
Other flights from Philadelphia
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Philadelphia to Fort Collins flights
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Top 7 airlines flying from Philadelphia to Fort Collins
Discover the top 7 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 2,558,603 searches. Data last updated April 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$95 | Average$213 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$106 | Average$176 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$128 | Average$264 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$189 | Average$393 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$199 | Average$347 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$208 | Average$373 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$220 | Average$277 | FlexibilityNo cancel fee | On-time62% |