$88+ 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 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
Mar 27 — Apr 31
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 July or August, booked 32 days in advance, depart on a Friday or Thursday and return on a Wednesday
Cheap flight deals from Philadelphia to Fort Collins
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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 February 25, 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 February 25, 2026.
This Frontier deal was found by Cheapflights users on 2/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:36 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Mon 4/1311:59 pm
DEN
- PHL
1 stop7h 12m
Frontier
Deal found 2/22![Frontier logo]()
$170
This Cheapflightsfares deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:41 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Mon 4/2011:59 pm
DEN
- PHL
1 stop8h 39m
Frontier
Deal found 2/23![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” 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 4/68:36 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Fri 4/1011:56 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 2/24![Frontier logo]()
$173
This Frontier deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” 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 3/308:25 pm
PHL
- DEN
Nonstop4h 39m
Frontier
Wed 4/111:56 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 2/23![Frontier logo]()
$174
This Cheapflightsfares deal was found by Cheapflights users on 2/21. 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.
Fri 5/158:25 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Mon 5/1811:59 pm
DEN
- PHL
Nonstop3h 35m
Frontier
Deal found 2/21![Frontier logo]()
$175
This Cheapflightsfares deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” 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 3/1812:04 pm
PHL
- DEN
1 stop10h 51m
Frontier
Mon 3/2310:45 am
DEN
- PHL
1 stop11h 40m
Frontier
Deal found 2/24![Frontier logo]()
$176
This Frontier deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” 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 3/201:13 pm
PHL
- DEN
1 stop10h 32m
Frontier
Tue 3/2411:59 pm
DEN
- PHL
1 stop9h 00m
Frontier
Deal found 2/24![Frontier logo]()
$177
This Orbitz deal was found by Cheapflights users on 2/21. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/146:00 am
PHL
- DEN
1 stop17h 45m
Frontier
Wed 3/1811:49 pm
DEN
- PHL
1 stop23h 26m
Frontier
Deal found 2/21![Frontier logo]()
$178
This Cheapflightsfares deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” 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.
Mon 4/67:41 pm
PHL
- DEN
1 stop15h 59m
Frontier
Sat 4/118:00 am
DEN
- PHL
1 stop10h 51m
Frontier
Deal found 2/24![Frontier logo]()
$179
This Frontier deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” 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 4/64:52 pm
PHL
- DEN
1 stop9h 16m
Frontier
Thu 4/1611:59 pm
DEN
- PHL
1 stop8h 58m
Frontier
Deal found 2/24![Frontier logo]()
$180
This Frontier deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” 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 3/168:25 pm
PHL
- DEN
Nonstop4h 39m
Frontier
Mon 3/2311:59 pm
DEN
- PHL
Nonstop3h 32m
Frontier
Deal found 2/23![Frontier logo]()
$181
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 February 25, 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 February 25, 2026.
This Delta deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/112:26 pm
PHL
- DEN
1 stop6h 51m
Delta
Wed 4/812:35 am
DEN
- PHL
1 stop6h 11m
Delta
Deal found 2/23![Delta logo]()
$238
This Southwest deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” 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 3/255:30 am
PHL
- DEN
Nonstop4h 10m
Southwest
Wed 4/16:30 pm
DEN
- PHL
Nonstop3h 20m
Southwest
Deal found 2/24![Southwest logo]()
$239
This United Airlines deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” 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 3/173:30 pm
PHL
- DEN
Nonstop4h 30m
United Airlines
Sat 3/214:25 pm
DEN
- PHL
1 stop5h 51m
United Airlines
Deal found 2/23![United Airlines logo]()
$281
This Delta deal was found by Cheapflights users on 2/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:36 pm
PHL
- DEN
1 stop6h 33m
Delta
Wed 4/810:25 am
DEN
- PHL
1 stop7h 24m
Delta
Deal found 2/21![Delta logo]()
$239
This Southwest deal was found by Cheapflights users on 2/20. 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.
Fri 3/205:20 am
PHL
- DEN
Nonstop4h 10m
Southwest
Sat 3/287:00 pm
DEN
- PHL
Nonstop3h 20m
Southwest
Deal found 2/20![Southwest logo]()
$323
This United Airlines deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” 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 3/143:30 pm
PHL
- DEN
Nonstop4h 30m
United Airlines
Sat 3/214:25 pm
DEN
- PHL
1 stop5h 51m
United Airlines
Deal found 2/24![United Airlines logo]()
$356
This Southwest deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/811:35 am
PHL
- DEN
2 stops7h 45m
Southwest
Mon 4/137:00 am
DEN
- PHL
2 stops7h 45m
Southwest
Deal found 2/23![Southwest logo]()
$325
This Southwest deal was found by Cheapflights users on 2/20. 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.
Mon 5/112:15 pm
PHL
- DEN
2 stops7h 05m
Southwest
Tue 5/196:50 am
DEN
- PHL
2 stops8h 00m
Southwest
Deal found 2/20![Southwest logo]()
$333
This Southwest deal was found by Cheapflights users on 2/20. 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 5/511:35 am
PHL
- DEN
2 stops7h 45m
Southwest
Sun 5/107:05 pm
DEN
- PHL
2 stops13h 30m
Southwest
Deal found 2/20![Southwest logo]()
$353
This Southwest deal was found by Cheapflights users on 2/21. 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.
Sat 4/48:35 am
PHL
- DEN
2 stops13h 30m
Southwest
Tue 4/78:40 am
DEN
- PHL
2 stops6h 10m
Southwest
Deal found 2/21![Southwest logo]()
$366
This Southwest deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” 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 4/1112:25 pm
PHL
- DEN
2 stops10h 20m
Southwest
Mon 4/1312:55 pm
DEN
- PHL
2 stops7h 50m
Southwest
Deal found 2/23![Southwest logo]()
$369
This Southwest deal was found by Cheapflights users on 2/21. 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.
Mon 4/611:25 am
PHL
- DEN
2 stops9h 20m
Southwest
Tue 4/71:15 pm
DEN
- PHL
2 stops6h 45m
Southwest
Deal found 2/21![Southwest logo]()
$393
Last-minute flights from Philadelphia to Fort CollinsDiscover last-minute flight deals from Philadelphia to Fort Collins. Data last updated February 25, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Fort Collins. Data last updated February 25, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 2/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/19:28 pm
PHL
- DEN
1 stop13h 43m
Frontier
Mon 3/91:36 pm
DEN
- PHL
1 stop8h 50m
Frontier
Deal found 2/22![Frontier logo]()
$211
This Cheapflightsfares deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” 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.
Mon 3/21:02 pm
PHL
- DEN
1 stop8h 25m
Frontier
Tue 3/312:59 am
DEN
- PHL
1 stop7h 25m
Frontier
Deal found 2/24![Frontier logo]()
$191
This Frontier deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” 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 3/32:09 pm
PHL
- DEN
1 stop10h 50m
Frontier
Tue 3/312:59 am
DEN
- PHL
1 stop7h 25m
Frontier
Deal found 2/24![Frontier logo]()
$187
This Cheapflightsfares deal was found by Cheapflights users on 2/21. 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 3/411:40 am
PHL
- DEN
1 stop11h 55m
Frontier
Sun 3/811:59 pm
DEN
- PHL
Nonstop3h 32m
Frontier
Deal found 2/21![Frontier logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” 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 3/46:45 pm
PHL
- DEN
2 stops39h 55m
Frontier
Tue 3/1011:59 pm
DEN
- PHL
1 stop9h 00m
Frontier
Deal found 2/23![Frontier logo]()
$213
This Super.com deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” 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 3/51:14 pm
PHL
- DEN
1 stop7h 57m
Frontier
Tue 3/1011:59 pm
DEN
- PHL
1 stop9h 00m
Frontier
Deal found 2/24![Frontier logo]()
$212
This Cheapflightsfares deal was found by Cheapflights users on 2/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/611:00 am
PHL
- DEN
Nonstop4h 31m
Frontier
Tue 3/1011:59 pm
DEN
- PHL
1 stop10h 27m
Frontier
Deal found 2/22![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 2/22. 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.
Fri 3/65:26 pm
PHL
- DEN
2 stops29h 59m
Multiple Airlines
Tue 3/1011:59 pm
DEN
- PHL
1 stop9h 00m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 2/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/611:00 am
PHL
- DEN
Nonstop4h 31m
Frontier
Sun 3/811:59 pm
DEN
- PHL
Nonstop3h 32m
Frontier
Deal found 2/21![Frontier logo]()
$215
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 February 25, 2026.
Search for one-way flight options from Philadelphia to Fort Collins. Find affordable one-way fares based on user searches. Data last updated February 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2610:00 pm
PHL
- DEN
1 stop24h 20m
Frontier
Deal found 2/24![Frontier logo]()
$88
This American Airlines deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” 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 4/138:22 pm
PHL
- DEN
Nonstop4h 25m
American Airlines
Deal found 2/24![American Airlines logo]()
$90
This Super.com deal was found by Cheapflights users on 2/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/158:25 pm
PHL
- DEN
Nonstop4h 39m
Frontier
Deal found 2/22![Frontier logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 2/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/281:30 pm
PHL
- DEN
2 stops21h 55m
Multiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$94
This Cheapflightsfares deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/38:25 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Deal found 2/24![Frontier logo]()
$95
This Cheapflightsfares deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” 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.
Mon 3/26:00 am
PHL
- DEN
1 stop7h 49m
Frontier
Deal found 2/23![Frontier logo]()
$96
This Cheapflightsfares deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:41 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Deal found 2/23![Frontier logo]()
$97
This Super.com deal was found by Cheapflights users on 2/21. 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.
Wed 5/68:25 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Deal found 2/21![Frontier logo]()
$98
This Cheapflightsfares deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” 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 4/88:25 pm
PHL
- DEN
Nonstop4h 28m
Frontier
Deal found 2/23![Frontier logo]()
$99
This Super.com deal was found by Cheapflights users on 2/21. 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.
Sun 3/19:28 pm
PHL
- DEN
1 stop13h 43m
Frontier
Deal found 2/21![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/291:30 pm
PHL
- DEN
2 stops19h 05m
Multiple Airlines
Deal found 2/23![Multiple Airlines logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 2/24. Clicking the “Pick Dates” 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 4/148:18 am
PHL
- DEN
2 stops16h 11m
Multiple Airlines
Deal found 2/24![Multiple Airlines logo]()
$102
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 February 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $170 (Frontier) |
One-way from | $88 (Kiwi.com) |
Popular in | December |
Cheapest in | July |
Average price | $330 |
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 February 25, 2026.
Use the filters below to find and compare flights from Philadelphia to Fort Collins that are best for you.
Fly from
Philadelphia
Fly to
Fort Collins
Route
Depart
Return
Price
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Wed 4/1
12:26 pm-5:17 pm
1 stop6h 51m
Denver Intl
Wed 4/8
12:35 am-8:46 am
1 stop6h 11m
$238
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Wed 3/25
5:30 am-7:40 am
Nonstop4h 10m
Denver Intl
Wed 4/1
6:30 pm-11:50 pm
Nonstop3h 20m
$239
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Wed 4/1
7:36 pm-12:09 am
1 stop6h 33m
Denver Intl
Wed 4/8
10:25 am-7:49 pm
1 stop7h 24m
$239
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Tue 3/17
3:30 pm-6:00 pm
Nonstop4h 30m
Denver Intl
Sat 3/21
4:25 pm-12:16 am
1 stop5h 51m
$281
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Fri 3/20
5:20 am-7:30 am
Nonstop4h 10m
Denver Intl
Sat 3/28
7:00 pm-12:20 am
Nonstop3h 20m
$323
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Wed 4/8
11:35 am-5:20 pm
2 stops7h 45m
Denver Intl
Mon 4/13
7:00 am-4:45 pm
2 stops7h 45m
$325
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Mon 5/11
2:15 pm-7:20 pm
2 stops7h 05m
Denver Intl
Tue 5/19
6:50 am-4:50 pm
2 stops8h 00m
$333
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Tue 5/5
11:35 am-5:20 pm
2 stops7h 45m
Denver Intl
Sun 5/10
7:05 pm-10:35 am
2 stops13h 30m
$353
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Sat 3/14
3:30 pm-6:00 pm
Nonstop4h 30m
Denver Intl
Sat 3/21
4:25 pm-12:16 am
1 stop5h 51m
$356
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Sat 4/4
8:35 am-8:05 pm
2 stops13h 30m
Denver Intl
Tue 4/7
8:40 am-4:50 pm
2 stops6h 10m
$366
Showing 1-10 of 22 results
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 February 20, 2026.
To ensure you get the cheapest price possible for a flight from Philadelphia to Fort Collins, you should look to book at least 32 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 month to book a flight from Philadelphia to Fort Collins?
Currently, January is the cheapest month in which you can book a flight from Philadelphia to Fort Collins (average of $85). Flying from Philadelphia to Fort Collins in May is currently the most expensive (average of $141). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from PHL to 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 February 25, 2026.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 32% on flights from Philadelphia to Fort Collins by exploring options for tickets at noon.
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 February 21, 2026.
Travelers seeking maximum savings on their Philadelphia to Fort Collins flight should consider departing on Friday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Philadelphia to 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 February 25, 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).
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 February 25, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and United 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.
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Food
7.0
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.
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Alternative routes for Philadelphia to Fort Collins
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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
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Philadelphia and Fort Collins flights
Browse other Philadelphia and Fort Collins flight options. Last updated on February 25, 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 February 25, 2026.
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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 February 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$106 | Average$194 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$112 | Average$219 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$128 | Average$264 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$188 | Average$392 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$198 | Average$348 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$204 | Average$368 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$208 | Average$277 | FlexibilityNo cancel fee | On-time62% |