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Fort Collins

$87+ 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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
Oct 19 — Oct 261
Sun 10/19
Sun 10/26
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to Fort Collins are usually found in August or October, booked 40 days in advance, depart on a Thursday or Friday and return on a Thursday

Cheap flight deals from Philadelphia to Fort Collins

Keep the following information in mind while searching for Philadelphia to Fort Collins flight deals. Data was last updated September 19, 2025.

Round-trip from

$167
(CheapOair)

One-way from

$87
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$290
From Philadelphia to Fort Collins
Search Deals
One-way flight from Philadelphia to Fort Collins
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Philadelphia to Fort Collins

Cheapest flights from Philadelphia to Fort Collins
Explore the most affordable flight options available from Philadelphia to Fort Collins. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 19, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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.
Sun 9/285:01 amPHL - DEN
1 stop17h 03mFrontier
Sun 10/511:59 pmDEN - PHL
1 stop12h 39mFrontier
Deal found 9/17$167
This Priceline deal was found by Cheapflights users on 9/18. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/175:12 pmPHL - DEN
1 stop7h 47mFrontier
Mon 10/2011:59 pmDEN - PHL
1 stop8h 35mFrontier
Deal found 9/18$168
This CheapOair deal was found by Cheapflights users on 9/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:45 amPHL - DEN
Nonstop4h 12mFrontier
Sun 10/511:59 pmDEN - PHL
1 stop20h 34mFrontier
Deal found 9/18$169
This CheapOair deal was found by Cheapflights users on 9/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:42 amPHL - DEN
Nonstop4h 16mFrontier
Wed 10/2212:36 amDEN - PHL
1 stop14h 56mFrontier
Deal found 9/17$170
This Frontier deal was found by Cheapflights users on 9/17. 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 10/175:12 pmPHL - DEN
1 stop7h 47mFrontier
Fri 10/1712:59 amDEN - PHL
1 stop8h 01mFrontier
Deal found 9/17$171
This CheapOair deal was found by Cheapflights users on 9/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/175:05 pmPHL - DEN
1 stop17h 28mFrontier
Sun 10/2612:34 amDEN - PHL
1 stop10h 00mFrontier
Deal found 9/18$172
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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.
Sat 9/276:45 amPHL - DEN
Nonstop4h 12mFrontier
Sun 10/511:59 pmDEN - PHL
1 stop12h 39mFrontier
Deal found 9/17$173
This Kiwi.com deal was found by Cheapflights users on 9/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/158:15 amPHL - DEN
1 stop9h 26mFrontier
Fri 10/1711:45 pmDEN - PHL
Nonstop3h 34mFrontier
Deal found 9/18$174
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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.
Fri 9/266:15 amPHL - DEN
1 stop15h 03mFrontier
Fri 9/2611:59 pmDEN - PHL
1 stop11h 56mFrontier
Deal found 9/17$175
This Frontier deal was found by Cheapflights users on 9/17. 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.
Wed 10/158:15 amPHL - DEN
1 stop9h 26mFrontier
Mon 10/2011:59 pmDEN - PHL
1 stop8h 35mFrontier
Deal found 9/17$176
This Frontier deal was found by Cheapflights users on 9/18. 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.
Thu 11/66:19 amPHL - DEN
Nonstop4h 16mFrontier
Mon 11/106:25 amDEN - PHL
1 stop12h 44mFrontier
Deal found 9/18$179

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 September 19, 2025.
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

Thu 12/11

6:15 am-10:07 am

1 stop5h 52m

Denver Intl

Sun 12/14

6:20 pm-5:50 am

1 stop9h 30m

$257

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 10/25

6:00 am-12:30 pm

2 stops8h 30m

Denver Intl

Sat 11/1

6:45 am-4:25 pm

1 stop7h 40m

$262

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 10/8

5:25 am-9:45 am

1 stop6h 20m

Denver Intl

Sat 10/11

5:40 pm-11:10 pm

Nonstop3h 30m

$297

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 1/23

1:10 pm-5:57 pm

1 stop6h 47m

Denver Intl

Wed 1/28

5:55 pm-11:30 pm

Nonstop3h 35m

$301

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 10/15

7:20 am-9:30 am

Nonstop4h 10m

Denver Intl

Mon 10/20

11:45 pm-12:10 pm

1 stop10h 25m

$303

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 1/21

3:55 pm-8:30 pm

1 stop6h 35m

Denver Intl

Mon 1/26

10:45 am-6:19 pm

1 stop5h 34m

$336

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 12/17

4:32 pm-11:04 pm

1 stop8h 32m

Denver Intl

Sat 12/27

10:40 pm-7:51 am

1 stop7h 11m

$344

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 11/28

5:45 am-10:45 am

2 stops7h 00m

Denver Intl

Fri 12/5

5:15 pm-10:35 pm

Nonstop3h 20m

$345

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 1/16

11:45 am-4:55 pm

1 stop7h 10m

Denver Intl

Sat 1/24

7:15 am-5:20 pm

1 stop8h 05m

$350

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 1/1

12:31 pm-6:14 pm

1 stop7h 43m

Denver Intl

Sun 1/4

7:08 pm-10:57 am

1 stop13h 49m

$355

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/18

Showing 1-10 of 23 results
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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.
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

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 September 12, 2025.

To ensure you get the cheapest price possible for a flight from Philadelphia to Fort Collins, you should look to book at least 40 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, October is the cheapest month in which you can book a flight from Philadelphia to Fort Collins (average of $197). Flying from Philadelphia to Fort Collins in March is currently the most expensive (average of $278). 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 September 19, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Philadelphia to Fort Collins as you normally would.

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 December 16, 2024.

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 September 19, 2025.

The most flights from PHL to FC9 are scheduled on a Monday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 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 September 19, 2025.
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.
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,964 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,926 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,171 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • What airport do you fly from for flights from Philadelphia to Fort Collins?

    If you book a flight to Fort Collins from Philadelphia, you will be flying from Philadelphia, which is the city’s only airport. Philadelphia (PHL) is located 7.0 mi from the center of Philadelphia. There are 13 flights from Philadelphia to Fort Collins per day from 8 different airlines.

  • How popular is this Philadelphia to Fort Collins flight route?

    Flights from Philadelphia to Fort Collins have been viewed 127 times in the past calendar month.

  • How long is the flight from Philadelphia to Fort Collins?

    JetBlue, Delta, and Southwest can get you from Philadelphia to Fort Collins in just under 5h 52m. Your travel time can differ by up to 2h 40m. There are 1553 mi between Philadelphia and Fort Collins. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Philadelphia to Fort Collins one-way?

    $90 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Southwest and Frontier, with prices starting from $90 and $94, respectively.

  • What are the most reliable airlines from Philadelphia to Fort Collins?

    Before booking your flight to Fort Collins from Philadelphia, check out the most reliable airlines to get you to your destination on time: Aer Lingus (100%), Air Canada (86%), Qatar Airways( 85%).

  • What are the cheapest flights from Philadelphia to Fort Collins?

    Looking for the cheapest flight from Philadelphia to Fort Collins? While on average our users pay $686, our data indicates the cheapest price to be $85. The most popular route (Philadelphia - Denver Intl), is priced around $144.

  • Can I find deals for flights from Philadelphia to Fort Collins that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Fort Collins flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Fort Collins?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Fort Collins.

  • Can I find deals for business class flights from Philadelphia to Fort Collins?

    Yes. Cheapflights offers flight deals from Philadelphia to Fort Collins by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Philadelphia to Fort Collins?

    Currently, October is the cheapest month in which you can book a flight from Philadelphia to Fort Collins (average of $197). Flying from Philadelphia to Fort Collins in March is currently the most expensive (average of $278). 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.

See more FAQs

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Alternative routes for Philadelphia to Fort Collins

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Philadelphia to Fort Collins

Discover the top 8 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 September 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$106Average$197FlexibilityNo cancel feeOn-time88%
FrontierCheapest$111Average$229FlexibilityNo cancel feeOn-time62%
DeltaCheapest$134Average$272FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$193Average$338FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$195Average$481FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$196Average$368FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$207Average$314FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$251Average$280FlexibilityNo cancel feeOn-time83%

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