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$99+ 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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to Fort Collins are usually found in September or October, booked 78 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

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 junio 12, 2025.

Round-trip from

$171
(Cheapflightsfares)

One-way from

$99
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$288
From Philadelphia to Fort Collins
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One-way flight from Philadelphia to Fort Collins
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Highest demand for flights based on searches. 5% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in June 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 junio 12, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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.
sáb. 8/166:15 amPHL - DEN
Nonstop4h 13mFrontier
mié. 8/2011:15 pmDEN - PHL
Nonstop3h 39mFrontier
Deal found 6/11$171
This American Airlines deal was found by Cheapflights users on 6/11. 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.
mié. 10/18:33 amPHL - DEN
Nonstop4h 04mAmerican Airlines
mié. 10/12:13 pmDEN - PHL
Nonstop3h 48mAmerican Airlines
Deal found 6/11$192
This Southwest deal was found by Cheapflights users on 6/11. 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.
mar. 9/234:45 pmPHL - DEN
Nonstop4h 00mSouthwest
sáb. 9/2711:05 amDEN - PHL
Nonstop3h 35mSouthwest
Deal found 6/11$212
This Delta deal was found by Cheapflights users on 6/10. 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.
sáb. 8/95:21 pmPHL - DEN
1 stop7h 08mDelta
sáb. 8/164:00 pmDEN - PHL
1 stop5h 50mDelta
Deal found 6/10$257
This JetBlue deal was found by Cheapflights users on 6/11. 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.
jue. 10/23:10 pmPHL - DEN
1 stop8h 39mJetBlue
dom. 10/510:44 pmDEN - PHL
1 stop8h 38mJetBlue
Deal found 6/11$283
This United Airlines deal was found by Cheapflights users on 6/11. 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.
mar. 8/268:00 amPHL - DEN
Nonstop4h 04mUnited Airlines
dom. 8/3111:59 pmDEN - PHL
Nonstop3h 36mUnited Airlines
Deal found 6/11$312

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 junio 12, 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

sáb. 8/16

6:15 am-8:28 am

Nonstop4h 13m

Denver Intl

mié. 8/20

11:15 pm-4:54 am

Nonstop3h 39m

$171

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

mié. 10/1

8:33 am-10:37 am

Nonstop4h 04m

Denver Intl

mié. 10/1

2:13 pm-8:01 pm

Nonstop3h 48m

$192

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

mar. 9/23

4:45 pm-6:45 pm

Nonstop4h 00m

Denver Intl

sáb. 9/27

11:05 am-4:40 pm

Nonstop3h 35m

$212

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

sáb. 8/9

5:21 pm-10:29 pm

1 stop7h 08m

Denver Intl

sáb. 8/16

4:00 pm-11:50 pm

1 stop5h 50m

$257

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

jue. 10/2

3:10 pm-9:49 pm

1 stop8h 39m

Denver Intl

dom. 10/5

10:44 pm-9:22 am

1 stop8h 38m

$283

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

mar. 8/26

8:00 am-10:04 am

Nonstop4h 04m

Denver Intl

dom. 8/31

11:59 pm-5:35 am

Nonstop3h 36m

$312

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

mié. 9/3

3:40 pm-5:53 pm

Nonstop4h 13m

$99

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

mar. 8/12

10:55 am-1:01 pm

Nonstop4h 06m

$109

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

dom. 9/7

8:15 am-1:42 pm

1 stop7h 27m

$116

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

vie. 9/5

3:10 pm-9:49 pm

1 stop8h 39m

$125

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 15 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 June 9, 2025.

To ensure you get the cheapest price possible for a flight from Philadelphia to Fort Collins, you should look to book at least 78 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 junio 12, 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. Monday 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 junio 12, 2025.

The most flights from PHL to FC9 are scheduled on a Thursday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in Fort Collins by month

Plan your trip to Fort Collins by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Fort Collins ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Fort Collins when rainfall is around 0.5 in.

Temperature in Fort Collins by month

Plan your trip to Fort Collins by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Fort Collins, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 junio 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Philadelphia to Fort Collins to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
JetBlue
7.3
Good
2,925 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 12 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 153 times in the past calendar month.

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

    $99 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 American Airlines and Frontier, with prices starting from $109 and $116, 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: Air Canada (79%), Frontier (71%), Southwest( 66%).

  • 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 $768, our data indicates the cheapest price to be $92. The most popular route (Philadelphia - Denver Intl), is priced around $197.

  • 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.

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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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Sun Country AirCheapest$82Average$275FlexibilityNo cancel feeOn-time83%
FrontierCheapest$87Average$214FlexibilityNo cancel feeOn-time62%
DeltaCheapest$134Average$267FlexibilityNo cancel feeOn-timeN/A
Allegiant AirCheapest$154Average$216FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$182Average$364FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$188Average$501FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$194Average$347FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$207Average$325FlexibilityNo cancel feeOn-time62%

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