$55 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 7/1. 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.
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Cheap Flight Deals 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.

Recent round-trip flight deals from Philadelphia to Fort Collins

KAYAK's recommended round-trip deals from the most popular airlines that fly from Philadelphia to Fort Collins.
Discover the best prices for you by selecting your travel dates on KAYAK.
Frontier Logo
6:15 am - 8:37 amPHL-DEN
4h 22mnonstop
Frontier Logo
11:30 pm - 5:10 amDEN-PHL
3h 40mnonstop
$112Frontier
Find Deal
Tue, May 27 - Tue, Jun 3
Frontier Logo
6:15 am - 8:37 amPHL-DEN
4h 22mnonstop
Frontier Logo
11:30 pm - 5:07 amDEN-PHL
3h 37mnonstop
$115Frontier
Find Deal
Sat, May 24 - Wed, May 28
United Airlines Logo
3:39 pm - 5:58 pmPHL-DEN
4h 19mnonstop
United Airlines Logo
11:59 pm - 5:37 amDEN-PHL
3h 38mnonstop
$204United Airlines
Find Deal
Fri, Jul 4 - Wed, Jul 9
United Airlines Logo
8:15 am - 2:46 pmPHL-DEN
8h 31m1 stop
United Airlines Logo
5:40 pm - 11:19 pmDEN-PHL
3h 39mnonstop
$210United Airlines
Find Deal
Wed, Jul 2 - Wed, Jul 9
American Airlines Logo
7:20 am - 2:19 pmPHL-DEN
8h 59m1 stop
American Airlines Logo
2:00 pm - 7:50 pmDEN-PHL
3h 50mnonstop
$213American Airlines
Find Deal
Tue, May 27 - Tue, Jun 10
American Airlines Logo
7:40 pm - 9:53 pmPHL-DEN
4h 13mnonstop
American Airlines Logo
12:16 pm - 8:08 pmDEN-PHL
5h 52m1 stop
$223American Airlines
Find Deal
Sat, May 24 - Wed, May 28
Southwest Logo
5:25 am - 7:35 amPHL-DEN
4h 10mnonstop
Southwest Logo
7:10 pm - 12:45 amDEN-PHL
3h 35mnonstop
$235Southwest
Find Deal
Wed, Jun 4 - Sun, Jun 8
Southwest Logo
5:55 am - 2:30 pmPHL-DEN
10h 35m2 stops
Southwest Logo
12:10 pm - 5:45 pmDEN-PHL
3h 35mnonstop
$244Southwest
Find Deal
Wed, Jun 11 - Tue, Jun 17
Delta Logo
6:00 am - 9:44 amPHL-DEN
5h 44m1 stop
Delta Logo
12:59 am - 11:04 amDEN-PHL
8h 05m1 stop
$257Delta
Find Deal
Wed, Jun 11 - Mon, Jun 16
Delta Logo
7:05 pm - 11:22 pmPHL-DEN
6h 17m1 stop
Delta Logo
12:55 am - 8:34 amDEN-PHL
5h 39m1 stop
$265Delta
Find Deal
Fri, Jun 20 - Fri, Jun 27
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Good to know

Low seasonJanuary
High seasonAugust
Cheapest flight$55
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 4% 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 04m.

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

    18 direct flights run between Philadelphia and Fort Collins on a daily basis. On average, there are about 129 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 Fridays 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 Thursdays.

  • 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.

  • Which airlines provide the cheapest flights from Philadelphia to Fort Collins?

    In the last 72 hours, the cheapest one-way ticket between Philadelphia and Fort Collins found on KAYAK was with Frontier for $55. Frontier offered a round-trip connection from $112 and United Airlines from $204.

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 56 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 September.

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 4294 reviews
8.2Boarding
7.6Entertainment
8.6Crew
8.0Comfort
7.1Food
Airline reviews

It is southwest seat was ok. Not the most comfortable seat

8.0 ExcellentJohn, Apr 2025PVD - FLL
Read more Southwest reviews

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

The seats were a bit cramped and worn, but otherwise okay.

I would have liked to arrive on time - not 5 hours late!

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

It was a perfect flight in all aspects! Both legs!

Only one drink pass through the cabin for a 4 hour flight. Quite rough and bumpy landing.

WiFi on the flight was not working. Thus, entertainment options were limited.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Received an email the night before showing that there would be seatback entertainment on our flight. We get on and there was no seatback entertainment. And then it was a scramble to try to set up the iPads for the kids before takeoff so they could watch something for the four hour flight.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

The food for long haul was poor compared to Singapore airlines economy. Pasta plain with tomato sauce . Singapore airlines give me Hagen dash small ice cream cup it was great. The choices of dinner course Singapore air also much better The crew mostly friendly. The economy seat are as expected.

The plane was clean. The staff was excellent. The flight attendants were very good. Enjoyable flight. Overall. The seats in the back are too small but, will always be.

Flight was 3 1/2 hour delayed with no credit or meal vouchers

late departure due to some unspecified issue with ventilating the cabin. They got it running but it was FREEZING for the whole flight. I asked for a blanket but they didn't provide one. They could not turn up the heat. it was quite miserable.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

Everyone was nice. It was on time and the food was. Airplane food, but not horrible

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

late again! but its my only option to not take 9 hours to get to Memphis

Almost everything was outstanding. First, we boarded on time and the flight crew did a great job getting everyone seated. Then the pilots took their time and care to make sure the plane was full de-iced three times as there was a bad ice storm a few hours earlier. The plane ride was smooth and comfortable and even the economy seats had decent room and comfort. Flight Attendant Lisa went above and beyond to make sure I was comfortable - she is outstanding. The only thing wrong with the flight, and it is something which needs to be addressed, is that the gate to gate time was over 6.5 hours and not one meal was served. The only thing offered to eat were two small cookies for a transcontinental flight - unacceptable. Charge me more but give me a meal for a long flight. Thankfully Lisa found something for me.

Very poor. Our special services attendant gave us incorrect information. I also was mishandled at landing. There was no wheelchair waiting. I fell deboarding the plane. Appalling!

I had a very unpleasant encounter with one man from customer service: he was extremely rude and miserable. And his condition was reflected on his decision to send me to the worst airport hotel and get an awful flight connection. My hotel shuttle had never arrived and I had to book another hotel. People served by other representatives got a much better treatment and deal.

The flight left a bit late, but arrived close to time expected…With the flight being close to full the crew did well serving drinks to all in a very timely fashion. The flight was a pleasure…

They didn't have any gluten-free snacks, oddly, which I require...or any flavored soda water or decaf tea options, which seems to be standard.

My flight back my reservations were list because they said I didn't pay my pet fee when I had a receipt

Not very good. Paid in excess of $400 for assigned seating for my family and that was not provided. I want that money back.

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

The plane failed preflight inspection, so we sat there for 90 mins while they tried to fix it. Ultimately, everything was remedied and we made our connecting flight; instead of a 2 hour layover at the airport, we spent it waiting on the plane.

Check in at Philadelphia international was absolutely terrible! I fly 2 to 3 times a month and avoid frontier at all cost and will never fly Frontier again! The night before travel, I tried checking in however, the app was giving me an error, so I went to the desktop, which instructed you that you need to use the app. The next day I presented at the check-in gate after trying at least a half dozen times prior to getting into the airport and continuing to getting the error in the app. I actually had rebooted my phone numerous times and reinstall the app just in case. My phone is only one generation older than the current model. It has no problems completing a frontier flight purchase or any other app issues. There was only three frontier employees working at check-in and a huge line while I was in line I continued to try and check in via the app. As I approach the desk, I was dreading dealing with the agent. He was extremely unprofessional, anti-semantic & very ignorant, and mean to the people in front of me, as well as the people who ended up being behind me. He literally told people “Man I don’t care bout y’all” in his native dialect! Maintaining my composure I approached and explained the situation. To which he replied, you’re gonna have to pay then! I don’t understand. It’s an issue with their app not allowing me to check in! Not my issue! He told me if I pay cash it would be $15, $25 if I pay credit card. I don’t understand a $10 difference for paying with a credit card? I am completely cashless so I continued to try using the app to avoid the $25 fee, Which I still don’t believe that I should be responsible for since it was Frontier’s technical issue!!! I continued to check in via the app a couple more times after he verified I was doing everything right he proceeded to continue to belittle the people behind me. Yelling at them saying I don’t care about you people! I cannot believe that this is the way that businesses would treat its customers! Unfortunately, the black mail with dreadlocks did not have a name tag all he had was a frontier sweater on! For the $25 fee that I ended up getting charged on my credit card. I should’ve just booked originally with Spirit or any other carrier! I have no problem paying fees that I should be responsible for, but when it’s due to a technical failure of a company, the customer should not be responsible for it! I cannot believe that it’s not frontier going out of business!

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

The seats were extremely hard and uncomfortable. It was disappointing even for a budget airline.

Delayed each time on a round trip with no significant weather interference. Updates to flight times came after the fact. 30 min behind in boarding and board and phone still show an on time departure. Some mysterious extra 300 miles that came so surprising they had to fuel while we were already on board?

terrible cascading delays and unhelpful customer service. uncomfortable plane. crew was great, however!

Booked direct in July '24. Turned into a 14 hr layover (both ways) in Denver. My 5 day vaca turned into a 1 day . Not good, BUT,... Thank you for the people @ Frontier who were professionally friendly & approachable.

Our flight was canceled for no known reason. We weren’t told until we were checking in at 5:00 am. This was after our last flight with Frontier where we sat on the plane for three hours (not an exaggeration) before we took off because of a mechanical issue. We won’t be flying Frontier again.

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

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