$80 Find Cheap Flights from Philadelphia to Fort Collins

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Fort Collins departing on 2/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights from Philadelphia to Fort Collins

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Useful Info
Flight Deals

Cheap Flights from Philadelphia to Fort Collins (PHL-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Fort Collins that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Fort Collins

Tue, Dec 23 - Mon, Dec 29
Frontier Logo
1:54 pm - 11:13 pmPHL-DEN
11h 19m1 stop
Frontier Logo
3:45 pm - 1:24 amDEN-PHL
7h 39m1 stop
$152Frontier
Find Deal
Sat, Dec 6 - Mon, Dec 8
Multiple Airlines Logo
4:00 pm - 9:02 amPHL-DEN
19h 02m2 stops
Multiple Airlines Logo
12:59 am - 9:47 amDEN-PHL
6h 48m1 stop
$153Multiple Airlines
Find Deal
Sun, Dec 21 - Sat, Dec 27
Frontier Logo
5:01 am - 2:54 pmPHL-DEN
11h 53m1 stop
Frontier Logo
12:14 am - 12:42 amDEN-PHL
22h 28m1 stop
$154Frontier
Find Deal
Sat, Dec 20 - Tue, Jan 6
Frontier Logo
8:36 pm - 10:59 pmPHL-DEN
4h 23mnonstop
Frontier Logo
6:38 pm - 12:44 pmDEN-PHL
16h 06m2 stops
$155Frontier
Find Deal
Tue, Dec 2 - Tue, Dec 9
Frontier Logo
6:22 pm - 10:18 amPHL-DEN
17h 56m1 stop
Frontier Logo
11:59 pm - 12:49 pmDEN-PHL
10h 50m1 stop
$156Frontier
Find Deal
Tue, Dec 23 - Mon, Jan 5
Frontier Logo
1:54 pm - 11:13 pmPHL-DEN
11h 19m1 stop
Frontier Logo
6:21 pm - 5:40 amDEN-PHL
9h 19m1 stop
$157Frontier
Find Deal
Tue, Dec 16 - Mon, Jan 5
Frontier Logo
8:00 am - 11:04 pmPHL-DEN
17h 04m1 stop
Frontier Logo
6:21 pm - 5:40 amDEN-PHL
9h 19m1 stop
$158Frontier
Find Deal
Tue, Dec 16 - Wed, Dec 17
Southwest Logo
6:35 am - 8:45 amPHL-DEN
4h 10mnonstop
Southwest Logo
5:15 pm - 10:35 pmDEN-PHL
3h 20mnonstop
$159Southwest
Find Deal
Tue, Jan 13 - Fri, Jan 16
Frontier Logo
5:30 am - 12:21 pmPHL-DEN
8h 51m1 stop
Frontier Logo
9:44 am - 12:14 amDEN-PHL
12h 30m1 stop
$160Frontier
Find Deal
Mon, Nov 24 - Mon, Dec 1
Frontier Logo
12:00 pm - 7:13 pmPHL-DEN
9h 13m1 stop
Frontier Logo
6:30 am - 4:24 pmDEN-PHL
7h 54m1 stop
$161Frontier
Find Deal

Everything you should know

Cheapest round-trip
$152
Overall average: $384
Frontier
Tue 12/23Mon 12/29
PHL - DEN • 1 stop
Cheapest non-stop
$152
Typical prices: $243-$474
Frontier
Sun 12/21Mon 1/5
PHL - DEN • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Fort Collins!
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$80
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Philadelphia to Denver

When to book flights from Philadelphia to Fort Collins

Are your dates flexible? Find out the best times to travel from Philadelphia to Fort Collins based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

FAQs for booking flights from Philadelphia to Fort Collins

  • Which airports will I be using when flying from Philadelphia to Fort Collins?

    When flying out of Philadelphia you’ll be using Philadelphia. Fort Collins does not have its own airport so you’ll be flying into nearby Denver Intl airport, which is 54.6 mi away.

  • How long does a flight from Philadelphia to Fort Collins take?

    Direct flights cover the 1,553 miles separating Philadelphia and Fort Collins in about 4h 23m.

  • How many flights are there between Philadelphia and Fort Collins?

    22 direct flights run between Philadelphia and Fort Collins on a daily basis. On average, there are about 159 departures each week.

  • What’s the cheapest day of the week to fly between Philadelphia and Fort Collins?

    Consider leaving on a Tuesday and avoid Mondays if you are looking for the best rates. For your return to Philadelphia, you’ll find the best rates on Wednesdays and the most expensive ones on Saturdays.

  • How does KAYAK find such low prices on flights from Philadelphia to Fort Collins?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Fort Collins.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Fort Collins?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Fort Collins from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Fort Collins?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Fort Collins with an airline and back to Philadelphia with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Fort Collins?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Fort Collins from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights from Philadelphia to Fort Collins

  • There is no airport in Fort Collins. Instead, you’ll be flying into Denver Airport when flying between Philadelphia and Fort Collins.
  • The cheapest flight from Philadelphia to Fort Collins was found 40 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is August.

Reviews of the top 5 airlines serving Philadelphia to Fort Collins

 
Need help choosing which airline to fly with from Philadelphia to Fort Collins? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4242 reviews
8.1Boarding
8.6Crew
7.5Entertainment
7.0Food
8.0Comfort
Airline reviews

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

10.0 ExcellentMichael, Nov 2025LAX - BWI
Read more Southwest reviews

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

Everything a cheap airline should be at normal airline rates.

Plane crashed into a bus or some other vehicle on the ground while pulling out of the gate. No injuries, but wing tip was damaged and returned to gate for “maintenance issues” and we departed 5 hours later because the plane went out of service and new plane was flown in from a nearby airport, Midway.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Great flight. Outstanding Service. Southwest was able to put us on a direct flight to Denver when the connection could have been affected by a later arrival to Baltimore. The direct flight was less expensive that the flight with the connection in Baltimore.

The ticket agents in West Palm Beach on Friday afternoon Nov. 7th were incredible in getting us on an earlier plane to Atlanta during the government shutdown. Had the taken our original flight we would have missed our connection. She did this on her own, We didn't even have to ask, and she did it all with a smile and showing genuine concern that we would be taken care of. We are very grateful and thankful. We fly often, and now we will be sure to fly Delta.

Flight delayed then cancelled. Misplaced luggage. Still do not have. Rented car 1100 mile drive. I had to buy some overnight Hotels clothes toiletries gas food at my expense. Still not home. Not sure where luggage is. Over 4 hours on hold to Felta

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

My husband and I recently had an unfortunate experience with Lufthansa. At the Philadelphia International airport, the ground staff refused to board us because we didn’t have a current visa stamped on our passports for Frankfurt. We completely understand that this was our mistake. we should have double-checked the visa requirements before our trip. However, the issue that upset us most was how the situation was handled by the staff. They told us they would mark it as “boarding denied due to visa issue”, but instead they recorded it as “no show”. Because of that incorrect entry, our return flight was automatically cancelled as well, which caused additional stress and expense. Mistakes can happen, but we expected more transparency and accuracy from a reputed airline like Lufthansa. It would have made a big difference if the staff had been more careful and considerate in documenting the situation correctly.

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

Terrible. They wouldn't allow me on my flight on the 14th..

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

The Phildalphia to Allentown portion was a BUS, not a plane. All was as expected.

Excellent - explanations were clear staff was nice and flight was comfortable

Flight was delayed not sure why no explanation given and no apologies either. Otherwise the flight was fine

Did not get the seat I selected and paid for.

Plane was delayed for 6 hours, at first by weather, which is understandable, but was further delayed with NO given reason for 2 1/2 hours more. We had no clue when we were going to depart actually until they opened the ramp. VERY POOR to ZERO COMMUNICATION!!!

Flight was delayed and after being in the airport for like seven hours, it was canceled.

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

Terrible. Flight cancelled with no reasoning and no flights to rebook. Employees were useless and did nothing to help. Did not even know where to retrieve luggage from the cancelled flight. Flyers beware.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

The experience was good. No frills but I got there safe and sound and on time.

sluggish boarding and arrival procedures, fake nice flight attendants, and lots of delays.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

First of all, we never got on the connecting flight to Denver. They delayed our flight for two hours. If we would have gotten on that flight, we would have been stuck in Denver for 13 hours. So we re- routed our flight for a straight through flight to Oklahoma two days later. THEN, they delayed that flight for two hours. After that we were able to finally get on our flight and come home. Frontier Airlines - one of the worst airlines I have ever been on.

Terrible communication with weather delay, lost baggage, near impossible to reach customer service

Everything you need to know for your flight from Philadelphia to Fort Collins

Complete your trip to Fort Collins with a hotel stay or car rental