$55 Find Cheap Flights from Philadelphia to Colorado

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 Colorado 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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KAYAK searches hundreds of travel sites at once for deals on flights to Colorado

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Colorado.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Colorado.
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Best Colorado Flight Deals from Philadelphia

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Denver
Denvernonstop$112
Aspen
Aspen1 stop$439
Vail
Vail1 stop$389
Grand Junction
Grand Junction1 stop$285
Durango
Durango1 stop$320
Montrose
Montrose1 stop$329
Hayden
Hayden1 stop$309
Gunnison
Gunnison1 stop$435
Denver
Denvernonstop$112
Aspen
Aspen1 stop$439
Vail
Vail1 stop$389
Grand Junction
Grand Junction1 stop$285
Durango
Durango1 stop$320
Montrose
Montrose1 stop$329
Hayden
Hayden1 stop$309
Gunnison
Gunnison1 stop$435

Cheap Flights from Philadelphia to Colorado

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Colorado 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 Colorado

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Philadelphia to Colorado.
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
Useful Info

KAYAK's insights & trends for Philadelphia to Colorado flights

Get data-powered insights and trends into flights from Philadelphia to Colorado to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Philadelphia to Colorado flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Philadelphia to Colorado.

The cheapest ticket to Colorado from Philadelphia found in the last 72 hours was to Denver, at $173 round-trip. The most popular route is from Philadelphia (PHL) to Denver (DEN), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $173.

Can I save money by flying with a layover from Philadelphia to Colorado?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $696, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Philadelphia to Colorado?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Colorado, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Philadelphia to Colorado is September, when tickets cost $248 (return) on average. On the other hand, the most expensive months are December and March, when the average cost of round-trip tickets is $380 and $347 respectively.

What’s the cheapest day of the week to fly from Philadelphia to Colorado?

The average price of all round-trip flights from Philadelphia to Colorado clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Colorado on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Philadelphia to Colorado. For your return ticket, we recommend flying on a Wednesday and avoiding Sundays for the best deals.

How far in advance should I book a flight from Philadelphia to Colorado?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Philadelphia to Colorado, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Philadelphia to Colorado, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.


Good to know

Low seasonJanuary
High seasonAugust
Cheapest flight$55
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 16% increase in price.
Flight from Philadelphia to Denver

FAQs - booking Colorado flights

  • How large can a carry-on bag be on a flight from Philadelphia to Colorado?

    A good way to get around spending a small fortune on baggage fees is by only bringing a carry-on bag with you as you fly from Philadelphia to Colorado. But you will need to make sure your bag isn't too big to fit on your plane. Airlines like American Airlines will ask you to bring a carry-on bag no larger than 22 x 14 x 9 inches.

  • Are there any small airports near Philadelphia that might be good alternatives?

    If you would prefer to fly out of a smaller airport than Philadelphia International Airport (PHL), Atlantic City International Airport (ACY) might be a good option. It's not too far away from Philadelphia International Airport, and it offers flights to Denver (DEN), Vail (EGE), Aspen (ASE), and other parts of Colorado.

  • Can you get free Wi-Fi on airlines that fly from Philadelphia to Colorado?

    Most airlines will only provide first-class passengers with free Wi-Fi on flights to Colorado. But if you fly with an airline like Delta, you might be able to get Wi-Fi without paying for it. Simply sign up for the SkyMiles program and you'll get to use Delta's Wi-Fi without paying for it.

  • How can I make a flight from Philadelphia to Colorado more sustainable?

    To make sure your flight from Philadelphia to Colorado is sustainable, fly with an airline like United Airlines. United is in the process of making a push to become carbon-neutral. The airline is doing it by gradually upgrading its fleet and all the equipment it uses on the ground.

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

    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 Colorado.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Philadelphia to Colorado 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 Colorado?

    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 from Philadelphia to Colorado with an airline and back with another airline.

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

    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 from Philadelphia to Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Colorado?

    The cheapest time of day to fly to Colorado is generally at night, when round-trip flights cost $204 on average. Morning departures are around 1% more expensive than evening flights, on average. The most expensive time of day to fly to Colorado is generally in the morning, which is peak travel time and where the average cost of a ticket is $409.

Top tips for finding cheap flights to Colorado

  • Looking for a cheap flight? 25% of our users found tickets from Philadelphia to the following destinations at these prices or less: Denver $147 one-way - $272 round-trip
  • Anyone who would like to fly from Philadelphia International Airport (PHL) to Colorado will be able to do it through a number of different airlines. Delta, Frontier, Spirit Airlines, and United Airlines all have flights that depart from here. However, because Philadelphia International Airport is a hub for American Airlines, it often offers the most flights to Colorado.
  • Outside of thinking about which airline you would like to fly with when traveling from Philadelphia to Colorado, you should also give thought to which airport you want to arrive at Denver International Airport (DEN) is where most airlines will head when en route to Colorado. But you'll also have the option to stop at Denver and catch connecting flights to other Colorado airports such as Eagle County Regional Airport (EGE) and Aspen/Pitkin County Airport (ASE).
  • If you're traveling from Philadelphia to Colorado to go skiing, you might be wondering if you can bring your ski equipment along. You'll be happy to hear that most airlines will allow you to fly with it. You will, however, need to check your ski equipment just like you would check bags and pay extra for them if you aren't flying first class.
  • Those who can swing it should try to fly first class from Philadelphia to Colorado whenever possible. In addition to the fact that you'll be able to check bags for free when you have a first-class ticket, you'll also get amenities like extra legroom and a long list of menu options when you're in first class. It'll allow you to relax as you make your way to your destination.
  • Philadelphia International Airport has places for you to kill time if you arrive early for a flight to Colorado. The Admirals Club will be open to any passengers flying with American Airlines. There are also other lounges like the American Express Centurion Lounge.

Top 5 airlines serving from Philadelphia to Colorado

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Colorado. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Colorado? 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
7.6Entertainment
7.1Food
8.2Boarding
8.6Crew
8.0Comfort
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.

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