$131+ 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
Aug 27 — Sep 31
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 January or October, booked 28 days in advance, depart on a Friday or Saturday and return on a Friday
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 July 28, 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 July 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/38:37 pm
PHL
- DEN
Nonstop4h 27m
Frontier
Sat 9/1210:44 am
DEN
- PHL
1 stop10h 34m
Frontier
Deal found 7/27![Frontier logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:37 pm
PHL
- DEN
Nonstop4h 27m
Multiple Airlines
Thu 9/108:00 am
DEN
- PHL
1 stop7h 20m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2612:40 pm
PHL
- DEN
1 stop10h 44m
Frontier
Wed 9/309:16 pm
DEN
- PHL
2 stops24h 39m
Frontier
Deal found 7/27![Frontier logo]()
$230
This Expedia deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1712:54 pm
PHL
- DEN
Nonstop4h 14m
Multiple Airlines
Mon 8/249:54 am
DEN
- PHL
1 stop8h 07m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$231
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Thu 9/38:37 pm
PHL
- DEN
Nonstop4h 27m
Frontier
Tue 9/87:00 am
DEN
- PHL
2 stops22h 16m
Frontier
Deal found 7/23![Frontier logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/236:07 pm
PHL
- DEN
1 stop23h 16m
Multiple Airlines
Thu 8/2711:59 pm
DEN
- PHL
Nonstop3h 40m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$233
This JetBlue deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:00 am
PHL
- DEN
1 stop8h 03m
JetBlue
Tue 11/171:00 pm
DEN
- PHL
1 stop7h 36m
JetBlue
Deal found 7/27![JetBlue logo]()
$234
This Cheapflightsfares deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 10/88:44 pm
PHL
- DEN
Nonstop4h 20m
Frontier
Mon 10/1211:59 pm
DEN
- PHL
Nonstop3h 37m
Frontier
Deal found 7/26![Frontier logo]()
$235
This CheapOair deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/278:37 pm
PHL
- DEN
Nonstop4h 27m
Multiple Airlines
Mon 8/3111:37 pm
DEN
- PHL
1 stop6h 45m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$236
This Cheapflightsfares deal was found by Cheapflights users on 7/23. 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 8/208:37 pm
PHL
- DEN
Nonstop4h 27m
Frontier
Thu 8/2711:59 pm
DEN
- PHL
Nonstop3h 40m
Frontier
Deal found 7/23![Frontier logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:40 pm
PHL
- DEN
1 stop10h 23m
Frontier
Mon 9/2810:38 am
DEN
- PHL
1 stop12h 29m
Frontier
Deal found 7/27![Frontier logo]()
$238
This Priceline deal was found by Cheapflights users on 7/24. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/278:37 pm
PHL
- DEN
Nonstop4h 27m
Multiple Airlines
Fri 8/2811:37 pm
DEN
- PHL
1 stop6h 31m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$239
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 July 28, 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 July 28, 2026.
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Mon 8/313:48 pm
PHL
- DEN
Nonstop4h 07m
United Airlines
Thu 9/36:01 pm
DEN
- PHL
Nonstop3h 43m
United Airlines
Deal found 7/24![United Airlines logo]()
$321
This Southwest deal was found by Cheapflights users on 7/22. 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.
Thu 8/2010:20 am
PHL
- DEN
1 stop7h 15m
Southwest
Thu 8/277:00 am
DEN
- PHL
2 stops7h 00m
Southwest
Deal found 7/22![Southwest logo]()
$346
This United Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 9/236:25 am
PHL
- DEN
1 stop8h 20m
United Airlines
Mon 9/285:37 pm
DEN
- PHL
Nonstop3h 43m
United Airlines
Deal found 7/26![United Airlines logo]()
$331
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/242:05 pm
PHL
- DEN
2 stops7h 45m
Southwest
Mon 8/317:00 am
DEN
- PHL
2 stops8h 55m
Southwest
Deal found 7/27![Southwest logo]()
$351
This Southwest deal was found by Cheapflights users on 7/24. 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.
Fri 9/116:20 am
PHL
- DEN
2 stops6h 40m
Southwest
Tue 9/1511:15 am
DEN
- PHL
2 stops7h 45m
Southwest
Deal found 7/24![Southwest logo]()
$360
This Southwest deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 10/87:40 pm
PHL
- DEN
1 stop5h 30m
Southwest
Tue 10/131:30 pm
DEN
- PHL
2 stops6h 15m
Southwest
Deal found 7/25![Southwest logo]()
$380
This Southwest deal was found by Cheapflights users on 7/23. 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 8/191:45 pm
PHL
- DEN
2 stops8h 00m
Southwest
Sun 8/232:10 pm
DEN
- PHL
2 stops7h 05m
Southwest
Deal found 7/23![Southwest logo]()
$406
This Southwest deal was found by Cheapflights users on 7/24. 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.
Fri 10/165:10 pm
PHL
- DEN
2 stops10h 25m
Southwest
Tue 10/2011:15 am
DEN
- PHL
2 stops8h 15m
Southwest
Deal found 7/24![Southwest logo]()
$406
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:45 am
PHL
- DEN
2 stops8h 30m
Southwest
Mon 9/2812:10 pm
DEN
- PHL
2 stops7h 55m
Southwest
Deal found 7/27![Southwest logo]()
$406
This Southwest deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 9/35:55 am
PHL
- DEN
2 stops9h 50m
Southwest
Tue 9/811:15 am
DEN
- PHL
2 stops7h 45m
Southwest
Deal found 7/25![Southwest logo]()
$406
This Southwest deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:55 am
PHL
- DEN
2 stops7h 40m
Southwest
Tue 8/188:35 am
DEN
- PHL
2 stops7h 25m
Southwest
Deal found 7/25![Southwest logo]()
$420
This Southwest deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:25 am
PHL
- DEN
1 stop5h 25m
Southwest
Tue 8/118:35 am
DEN
- PHL
2 stops7h 25m
Southwest
Deal found 7/26![Southwest logo]()
$484
Last-minute flights from Philadelphia to Fort CollinsDiscover last-minute flight deals from Philadelphia to Fort Collins. Data last updated July 28, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Fort Collins. Data last updated July 28, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 7/23. 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.
Tue 8/412:44 pm
PHL
- DEN
Nonstop4h 14m
Frontier
Wed 8/126:05 am
DEN
- PHL
Nonstop3h 44m
Frontier
Deal found 7/23![Frontier logo]()
$297
This Frontier deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/412:44 pm
PHL
- DEN
Nonstop4h 14m
Frontier
Wed 8/1911:59 pm
DEN
- PHL
Nonstop3h 40m
Frontier
Deal found 7/27![Frontier logo]()
$301
This Expedia deal was found by Cheapflights users on 7/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/412:44 pm
PHL
- DEN
Nonstop4h 14m
Multiple Airlines
Tue 8/1111:37 pm
DEN
- PHL
1 stop6h 45m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$308
This Cheapflightsfares deal was found by Cheapflights users on 7/24. 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.
Tue 8/45:25 pm
PHL
- DEN
1 stop16h 55m
Frontier
Tue 8/2511:59 pm
DEN
- PHL
Nonstop3h 40m
Frontier
Deal found 7/24![Frontier logo]()
$312
This Travelocity deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/512:44 pm
PHL
- DEN
Nonstop4h 14m
Multiple Airlines
Tue 8/1111:37 pm
DEN
- PHL
1 stop6h 45m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$268
This Cheapflightsfares deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 8/512:44 pm
PHL
- DEN
Nonstop4h 14m
Frontier
Sat 8/156:05 am
DEN
- PHL
Nonstop3h 44m
Frontier
Deal found 7/26![Frontier logo]()
$282
This Cheapflightsfares deal was found by Cheapflights users on 7/23. 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 8/68:37 pm
PHL
- DEN
Nonstop4h 27m
Frontier
Tue 8/1811:59 pm
DEN
- PHL
Nonstop3h 40m
Frontier
Deal found 7/23![Frontier logo]()
$295
This Frontier deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/68:37 pm
PHL
- DEN
Nonstop4h 27m
Frontier
Mon 8/176:05 am
DEN
- PHL
Nonstop3h 44m
Frontier
Deal found 7/25![Frontier logo]()
$310
This Orbitz deal was found by Cheapflights users on 7/22. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/68:37 pm
PHL
- DEN
Nonstop4h 27m
Multiple Airlines
Mon 8/1011:37 pm
DEN
- PHL
1 stop6h 58m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$313
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 July 28, 2026.
Search for one-way flight options from Philadelphia to Fort Collins. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
This Trip.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:25 am
PHL
- DEN
1 stop9h 36m
Frontier
Deal found 7/25![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Wed 8/194:45 pm
PHL
- DEN
1 stop7h 25m
Frontier
Deal found 7/24![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 8/278:30 am
PHL
- DEN
2 stops14h 55m
Frontier
Deal found 7/26![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 9/246:10 pm
PHL
- DEN
1 stop29h 19m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 8/238:30 am
PHL
- DEN
2 stops32h 13m
Frontier
Deal found 7/26![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Fri 8/144:40 pm
PHL
- DEN
1 stop18h 23m
Frontier
Deal found 7/23![Frontier logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 8/236:07 pm
PHL
- DEN
2 stops11h 41m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 8/134:30 pm
PHL
- DEN
2 stops48h 20m
Frontier
Deal found 7/26![Frontier logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/259:16 pm
PHL
- DEN
2 stops36h 58m
Frontier
Deal found 7/25![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Wed 9/910:37 am
PHL
- DEN
2 stops27h 33m
Frontier
Deal found 7/24![Frontier logo]()
$142
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 July 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $225 (Kiwi.com) |
One-way from | $131 (Trip.com) |
Popular in | June |
Cheapest in | January |
Average price | $395 |
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 July 28, 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
Quickest round-trip
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Mon 8/31
3:48 pm-5:55 pm
Nonstop4h 07m
Denver Intl
Thu 9/3
6:01 pm-11:44 pm
Nonstop3h 43m
$321
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Wed 9/23
6:25 am-12:45 pm
1 stop8h 20m
Denver Intl
Mon 9/28
5:37 pm-11:20 pm
Nonstop3h 43m
$331
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Thu 8/20
10:20 am-3:35 pm
1 stop7h 15m
Denver Intl
Thu 8/27
7:00 am-4:00 pm
2 stops7h 00m
$346
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Mon 8/24
2:05 pm-7:50 pm
2 stops7h 45m
Denver Intl
Mon 8/31
7:00 am-5:55 pm
2 stops8h 55m
$351
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Fri 9/11
6:20 am-11:00 am
2 stops6h 40m
Denver Intl
Tue 9/15
11:15 am-9:00 pm
2 stops7h 45m
$360
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Thu 10/8
7:40 pm-11:10 pm
1 stop5h 30m
Denver Intl
Tue 10/13
1:30 pm-9:45 pm
2 stops6h 15m
$380
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Wed 8/19
1:45 pm-7:45 pm
2 stops8h 00m
Denver Intl
Sun 8/23
2:10 pm-11:15 pm
2 stops7h 05m
$406
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Fri 10/16
5:10 pm-1:35 am
2 stops10h 25m
Denver Intl
Tue 10/20
11:15 am-9:30 pm
2 stops8h 15m
$406
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Tue 9/15
10:45 am-5:15 pm
2 stops8h 30m
Denver Intl
Mon 9/28
12:10 pm-10:05 pm
2 stops7h 55m
$406
PhiladelphiaDenver
PHL - DEN
PHLDEN
Philadelphia
Thu 9/3
5:55 am-1:45 pm
2 stops9h 50m
Denver Intl
Tue 9/8
11:15 am-9:00 pm
2 stops7h 45m
$406
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 July 28, 2026.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 38% 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 July 28, 2026.
The most flights from PHL to FC9 are scheduled on a Monday (18 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 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 $252 and $457 in September.The cheapest round-trip price found within the last 5 days was $225 on Multiple Airlines (Sep 13-Sep 17).
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 July 25, 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. Tuesday at noon 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 July 28, 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.
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
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 July 28, 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 July 28, 2026.
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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 2,558,603 searches. Data last updated July 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$94 | Average$253 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$197 | Average$422 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$217 | Average$424 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$220 | Average$312 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$227 | Average$413 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$236 | Average$416 | FlexibilityNo cancel fee | On-timeN/A |