Find flights
Deals
When to book
FAQs & Tips
Airlines

Find cheap flights from Philadelphia to Colorado from $44

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 5/14. 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
0 bags
Fri 5/31
Fri 6/7

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

In the last 7 days travelers have searched 44,052,950 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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

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

Bundle and saveSave money when you bundle your flight + hotel.

Best Colorado Flight Deals

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

Denver
Denvernonstop$86
Aspen
Aspen1 stop$350
Grand Junction
Grand Junction1 stop$367
Vail
Vail1 stop$467
Durango
Durango1 stop$452
Montrose
Montrose1 stop$342
Hayden
Hayden1 stop$473
Gunnison
Gunnison2 stops$685

Good to know

Low season

November

High season

August

Cheapest flight

$44
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly and prices are also 3% lower on average.
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 to Colorado 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 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 to Colorado 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 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 to Colorado from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

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 $113 one-way - $181 round-trip
  • Morning departure is around 1% cheaper than an evening flight, on average*.
  • 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.
See more tips
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Philadelphia to Colorado

 
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
DeltaOverall score based on 10874 reviews
7.9Comfort
8.2Boarding
8.6Crew
8.0Entertainment
7.4Food
Airline reviews

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

6.0 GoodJames, Apr 2024TPA - RDU
Read more about Delta reviews

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

I had a wonderful experience flying with delta. The gentleman taking care of us on our flight was so nice, accommodating, and attentive. He always was smiling and giving pins to the kids which made me smile. The flight was quick too and without turbulence. Thank you for the great flying experience.

Delta is one of the best airlines I have flown

Made the Atlanta to Pittsburgh trip many times, with Delta no issues

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

Positive: Entertainment via phone on the short was great and my first time. Good food and wine and head phones for free. Negative: Seat hardly reclined on the long flight. Breakfast was an egg with a bun. No egg choices and rather have something sweet like bun/jam and Youghurt.

They did get us booked on a later flight, but it made us miss our connecting flight. So, we had to stay and another state overnight with no luggage or clothes. Because they kept our luggage at airport for next flight on the next day.

Flight was on time. Staff were friendly. I paid for Economy Plus but was required to check my standard carry-on luggage due to lack of space on the aircraft. This cost me 30 minutes, unexpectedly, in waiting at the baggage claim. This experience did not meet my expectations.

Crew is way too many times on the intercom re explaining the same thing

Amazing comfortable chairs great snacks super friendly staff pilots did excellent job. Smooth sailing all the way. Definitely be flying United more.

We waited too long to get water while the plane was on the Tarmac awaiting de-icing.

Easy peasy. Crew was great. Take-off and landing nice anc chill (good job by the pilot). Thank you UA!

The plane was delayed coming in and on the tarmac. I was coming from another flight so it made for a very long day. The stewardess kept trying to slam the overhead bins closed and I was worried that she had damaged my new luggage. They ran out of snacks and lccdsddd me a hummus box which was nice. It took them a very long time to pick up the garbage so I could not go to the washroom and had little time. To prepare for disbarment. The TV system was hard to control from the armrest and picture wasn’t clear. The crew did apologize several times for the lateness. It took the Denver airport an unusually long time to de-ice the plane.

By in large it was a good experience. The flight crew was great and that's the most important to me. Boarding was fine.

It was fine. Everything ran on time, crew was great.

Not being able to purchase my check in baggage online was a negative.

LATE LATE LATE!!! Plagued by late AA flights on this trip. Such a drag. This one was by far the worst.

Same basket of unhealthy prepackaged snacks (junk food) which was depleted by the time it got to my row!!

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

Flight from PHL to PHX arrived 50 minutes early and a gate was available. First class flight attendant Stephanie was very friendly and polite. Sanitizing wipes should be provided with meals in addition to refresher towels.

flight delayed so missed connection and this had to rebook for next day

Flight departed PHL one hour late due to late arrival of aircraft. On board services were okay. First class menu does not offer any new items; same desserts (cheese & crackers or Mango sorbet). At least there were no credit card promotions during the flight.

After sitting on plane for 7+ hours, flight was canceled. And to makes matters worse, my suitcase is in baggage hell!

Terrible Ticketing and Check in process. I learned that AA unilaterally cancelled my premium seating from PHL to CLT and from CLT to JAN. They did, however, refund my money, but my seating was subsequently severely downgraded. They didn’t have a seat for my unless I paid for it! Not cool! Consequently, Check-in took 45 min. AA is usually great, but this was my worst experience with AA ever. Appalling they they arbitrarily cancel my seats threatening loss of flight if I didn’t pay for a seat!!!! -John

We liked quick boarding and on time departure. Seats were very uncomfortable.

The guy with severe body odor sat next to me. For the whole duration of the flight it was a torture. The airline should have better policy on limiting people with bad body odor to board the flight. Passengers should not be the ones to endure bad odor for the whole duration of the flight. The airline should be e the one to ensure decent air quality for ever passenger.

Overall it was a miserable experience... I will never fly spirit for more than a 3 hour flight or overnight.

The boarding attendant was slightly rude when I asked about checking our stroller. Made me feel like I was bothering her.

My wife and I are both handicapped and at boarding they upgraded us to a seat closer to the front rather than all the way towards the back. Much appreciated.

Not much seat room, but that was unexpected. But the seat headrest was very uncomfortable.

First the good, everyone was friendly and efficient. Flight was smooth and plane was very clean and new. Now the bad, seats have almost no padding on your behind. I was in exit row so I had tons of leg room for a 6' 2" bean pole with long legs. Everything was extra - water, soda, snacks everything besides oxygen. Ya get what you pay for, and my flight was cheap as you could ever want it, so no worries.

First the good, everyone was friendly and efficient. Flight was smooth and plane was very clean and new. Now the bad, seats have almost no padding on your behind. I was in exit row so I had tons of leg room for a 6' 2" bean pole with long legs. Everything was extra - water, soda, snacks everything besides oxygen. Ya get what you pay for, and my flight was cheap as you could ever want it, so no worries. They dont really bother you about carry-on size, I brought a descent sized backpack and they didnt even check.

Spirit canceled the flight in March and never notified me!

First....my trip was from Ft. Myers to Philly (not the other way around). Plane was clean, staff was friendly and flight was efficient with boarding and flight time. Thumbs up all around.

Seats are very small and extremely hard. Too close together. The person next to me had average shoulders and was very far into my 'space'.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Not have to pay for every single item to take a flight. Seating and delays sucked.

Terrible. Seats are bad and the baggage policy is inconsistent

Everything was good, and most importantly on time. They have been extremely tardy in some of my flights

They lost my baggage on my connection flight, it’s been 24 hours since I put my claim in and still no update on my bags.

It’s a cheap airline. I wish they had better seats.

The only issues had were outside of Frontier’s control or weren’t expected. It was a two hour flight they completed fast. We landed almost an hour ahead of schedule. The issues with no entertainment or food weren’t issues since there was no expectations. The issue of the loud or crying babies was outside of frontiers control.

Seats are cramped and very uncomfortable. You have to pay for everything and it is too expensive.

Smooth process and flight. My favorite kind. Uneventful and on-time!

Xmas Day- Flights were on time for departure and arrival, baggage check in and boarding process were hassle free, baggage also arrived without any delay. Satisfied customer on this journey.

Book cheap flights from Philadelphia to Colorado

Recent round-trip flight deals

5/11Sat
nonstopFrontier
4h 26mPHL-DEN
5/18Sat
nonstopFrontier
3h 39mDEN-PHL
$86
5/11Sat
nonstopFrontier
4h 26mPHL-DEN
5/15Wed
nonstopFrontier
3h 38mDEN-PHL
$87
5/13Mon
nonstopFrontier
4h 26mPHL-DEN
5/14Tue
nonstopFrontier
3h 34mDEN-PHL
$97
5/13Mon
nonstopAmerican Airlines
4h 22mPHL-DEN
5/14Tue
nonstopAmerican Airlines
3h 32mDEN-PHL
$226
7/13Sat
1 stopDelta
6h 55mPHL-DEN
7/18Thu
1 stopDelta
7h 51mDEN-PHL
$236
6/8Sat
1 stopJetBlue
8h 20mPHL-DEN
6/21Fri
1 stopJetBlue
8h 27mDEN-PHL
$242
7/15Mon
1 stopDelta
10h 21mPHL-DEN
7/20Sat
1 stopDelta
9h 06mDEN-PHL
$246
5/29Wed
1 stopAmerican Airlines
7h 00mPHL-COS
6/5Wed
1 stopAmerican Airlines
6h 08mCOS-PHL
$320
5/17Fri
1 stopUnited Airlines
6h 13mPHL-COS
5/21Tue
1 stopUnited Airlines
7h 34mCOS-PHL
$468
6/1Sat
1 stopUnited Airlines
7h 45mPHL-MTJ
6/8Sat
1 stopUnited Airlines
5h 45mMTJ-PHL
$468

Search by stops

Search by airline

Search by price

Recent one-way flight deals

5/14Tue
nonstopFrontier
4h 26mPHL-DEN
$44
5/14Tue
nonstopFrontier
4h 26mPHL-DEN
$45
5/25Sat
1 stopSun Country Air
21h 35mPHL-DEN
$68
6/3Mon
1 stopSun Country Air
7h 23mPHL-DEN
$92
5/14Tue
nonstopUnited Airlines
4h 16mPHL-DEN
$110
5/7Tue
1 stopUnited Airlines
9h 04mPHL-DEN
$111
6/4Tue
1 stopDelta
6h 56mPHL-DEN
$121
6/18Tue
1 stopDelta
6h 27mPHL-DEN
$123
5/28Tue
1 stopAmerican Airlines
6h 26mPHL-DEN
$128
5/13Mon
nonstopAmerican Airlines
4h 22mPHL-DEN
$152

Search by stops

Search by airline

Search by price

Last minute flights from Philadelphia to Colorado

Last minute flight, train and bus deals

5/6Mon
nonstopFrontier
4h 26mPHL-DEN
5/7Tue
nonstopFrontier
3h 34mDEN-PHL
$145
5/4Sat
nonstopFrontier
4h 26mPHL-DEN
5/7Tue
nonstopFrontier
3h 34mDEN-PHL
$156
5/4Sat
nonstopFrontier
4h 26mPHL-DEN
5/7Tue
nonstopFrontier
3h 34mDEN-PHL
$157
5/6Mon
multi-stopUnited Airlines
8h 21mPHL-DEN
5/9Thu
nonstopUnited Airlines
3h 36mDEN-PHL
$202
5/2Thu
nonstopAmerican Airlines
4h 16mPHL-DEN
5/7Tue
nonstopAmerican Airlines
3h 40mDEN-PHL
$311
5/6Mon
nonstopAmerican Airlines
4h 15mPHL-DEN
5/9Thu
nonstopAmerican Airlines
3h 32mDEN-PHL
$321
5/6Mon
nonstopUnited Airlines
4h 16mPHL-DEN
5/8Wed
nonstopUnited Airlines
3h 36mDEN-PHL
$331
5/3Fri
multi-stop
23h 19mPHL-DEN
5/11Sat
multi-stop
21h 07mDEN-PHL
$475
5/3Fri
multi-stop
23h 19mPHL-DEN
5/6Mon
multi-stop
24h 57mDEN-PHL
$483
5/6Mon
multi-stopDelta
7h 39mPHL-DEN
5/7Tue
multi-stopDelta
7h 03mDEN-PHL
$484

Search by stops

Search by airline

Search by price