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Fort Collins

$85+ 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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to Fort Collins are usually found in August or July, booked 40 days in advance, depart on a Friday or Thursday and return on a Thursday

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 November 5, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/3. 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 12/610:00 pmPHL - DEN
1 stop12h 24mFrontier
Tue 12/910:50 amDEN - PHL
1 stop25h 31mFrontier
Deal found 11/3$160
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 11/249:48 amPHL - DEN
1 stop15h 55mMultiple Airlines
Thu 11/2711:15 pmDEN - PHL
Nonstop3h 30mMultiple Airlines
Deal found 11/3$162
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 12/610:00 pmPHL - DEN
1 stop12h 24mMultiple Airlines
Mon 12/812:59 amDEN - PHL
2 stops11h 45mMultiple Airlines
Deal found 11/3$163
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 11/246:00 amPHL - DEN
Nonstop4h 25mMultiple Airlines
Tue 12/25:01 pmDEN - PHL
3 stops19h 20mMultiple Airlines
Deal found 11/3$164
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 11/256:00 amPHL - DEN
Nonstop4h 25mFrontier
Thu 11/2711:15 pmDEN - PHL
Nonstop3h 30mFrontier
Deal found 11/3$166
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 12/710:00 pmPHL - DEN
1 stop12h 24mMultiple Airlines
Mon 12/812:59 amDEN - PHL
2 stops11h 45mMultiple Airlines
Deal found 11/3$167
This Priceline deal was found by Cheapflights users on 11/4. 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 11/276:00 amPHL - DEN
Nonstop4h 25mFrontier
Mon 12/111:15 pmDEN - PHL
Nonstop3h 30mFrontier
Deal found 11/4$168
This American Airlines deal was found by Cheapflights users on 11/4. 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 11/249:23 pmPHL - DEN
Nonstop4h 25mAmerican Airlines
Wed 12/37:00 amDEN - PHL
Nonstop3h 38mAmerican Airlines
Deal found 11/4$169
This Frontier deal was found by Cheapflights users on 11/3. 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 11/246:00 amPHL - DEN
Nonstop4h 25mFrontier
Mon 12/16:30 amDEN - PHL
1 stop7h 54mFrontier
Deal found 11/3$170
This Cheapflightsfares deal was found by Cheapflights users on 11/2. 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 11/156:19 amPHL - DEN
Nonstop4h 16mFrontier
Sat 11/2211:20 pmDEN - PHL
Nonstop3h 30mFrontier
Deal found 11/2$171
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 11/183:10 pmPHL - DEN
2 stops19h 53mMultiple Airlines
Wed 11/1912:44 amDEN - PHL
1 stop6h 33mMultiple Airlines
Deal found 11/4$172

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 November 5, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$160
(Kiwi.com)

One-way from

$85
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$327
Provider with most accurate pricing for Philadelphia-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Denver Intl flights.
Search Deals
From Philadelphia to Fort Collins
Search Deals
One-way flight from Philadelphia to Fort Collins
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 5, 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

Sat 1/17

12:40 pm-5:50 pm

1 stop7h 10m

Denver Intl

Sat 1/24

10:00 am-3:40 pm

Nonstop3h 40m

$214

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 12/4

8:00 am-10:22 am

Nonstop4h 22m

Denver Intl

Sun 12/7

5:50 pm-11:22 pm

Nonstop3h 32m

$237

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 12/3

4:32 pm-10:59 pm

1 stop8h 27m

Denver Intl

Sun 12/7

11:59 pm-9:39 am

1 stop7h 40m

$245

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 12/3

6:00 am-10:18 am

1 stop6h 18m

Denver Intl

Sun 12/7

12:50 am-9:27 am

1 stop6h 37m

$247

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 1/27

5:00 pm-7:20 pm

Nonstop4h 20m

Denver Intl

Tue 2/3

4:35 pm-10:00 pm

Nonstop3h 25m

$249

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 1/28

5:00 pm-7:20 pm

Nonstop4h 20m

Denver Intl

Sat 1/31

10:00 am-3:40 pm

Nonstop3h 40m

$249

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 1/30

3:43 pm-6:12 pm

Nonstop4h 29m

Denver Intl

Sat 2/7

5:55 pm-11:30 pm

Nonstop3h 35m

$253

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 1/14

1:50 pm-7:20 pm

1 stop7h 30m

Denver Intl

Wed 1/21

4:35 pm-10:00 pm

Nonstop3h 25m

$259

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Mon 12/8

6:00 am-11:15 am

2 stops7h 15m

Denver Intl

Tue 12/16

8:05 am-5:20 pm

2 stops7h 15m

$267

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 1/28

6:51 pm-12:28 am

1 stop7h 37m

Denver Intl

Wed 2/4

4:43 pm-12:23 am

1 stop5h 40m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 22 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 October 31, 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 $89). Flying from Philadelphia to Fort Collins in May is currently the most expensive (average of $143). 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 November 5, 2025.

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 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 December 16, 2024.

Travelers seeking maximum savings on their Philadelphia to Fort Collins flight should consider departing on Thursday 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 November 5, 2025.

The most flights from PHL to FC9 are scheduled on a Monday (14 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 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 November 5, 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
4,240 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

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
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

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
7.9
Good
8,004 reviews
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

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
9,002 reviews
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

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
11,042 reviews
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

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
3,116 reviews
Southwest
8.0
Very good
4,240 reviews

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

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 11 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 124 times in the past calendar month.

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

    Southwest, United Airlines, and JetBlue can get you from Philadelphia to Fort Collins in just under 4h 22m. Your travel time can differ by up to 4h 05m. There are 1553 mi between Philadelphia and Fort Collins. This flight may include one or multiple stops.

  • 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: United Airlines (93%), Air Canada (91%), Frontier( 83%).

  • 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 $746, our data indicates the cheapest price to be $81. The most popular route (Philadelphia - Denver Intl), is priced around $138.

  • 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 $89). Flying from Philadelphia to Fort Collins in May is currently the most expensive (average of $143). 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 November 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$106Average$194FlexibilityNo cancel feeOn-time88%
FrontierCheapest$118Average$228FlexibilityNo cancel feeOn-time62%
DeltaCheapest$134Average$315FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$177Average$275FlexibilityNo cancel feeOn-time83%
United AirlinesCheapest$191Average$486FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$197Average$343FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$201Average$372FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$207Average$293FlexibilityNo cancel feeOn-time62%

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