Find cheap flights from Philadelphia to Colorado

Find cheap flights from Philadelphia to Colorado

Search hundreds of travel sites at once for deals on flights to Colorado. Bundle your flight + hotel and save!

Round-trip
Economy
Philadelphia (PHL)
Colorado
Thu 8/5
Thu 8/12
Any month
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Good to know

Low season

AugustBest time to beat the crowds with an average 4% drop in price.

High season

DecemberMost popular time to fly with an average 17% increase in price.

Average price round-trip

$508(avg. price over the last 2 weeks)

Good deal round-trip

$153or less

Good deal one-way

$98or less

Top tips for finding cheap flights to Colorado

  • Looking for a cheap flight? 25% of our users found tickets from Philadelphia to Colorado for the following prices or less: to Denver $98 one-way - $153 round-trip
  • Book at least 2 weeks before departure in order to get a below-average price.
  • High season is considered to be November and December. The cheapest month to fly to Colorado is August.
  • Morning departure is around 8% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs - booking Colorado flights

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Top 5 airlines serving Philadelphia to Colorado

Scores according to KAYAK customer reviews

7.9
Delta
Overall score based on 29,611 reviews
8.1
Boarding
7.8
Comfort
8.5
Crew
7.8
Entertainment
7.5
Food
Airline reviews

Pros: "Flight attendants were friendly."
Cons: "Luggage that had to be checked at the gate was not immediately available when we landed."

Cons: "Breakfast could have been offered."

Pros: "N/a"

Pros: "The crew was nice. They did a very good job under the circumstance."
Cons: "The flight was delayed over an hour because of an error on Delta‘s part. They did not verify people as they were boarding. Further the person in 17 F was doing video chat as we were preparing to take off and he had very foul language throughout the flight. The crew never said anything."

Cons: "Delayed flight ruined it."

Pros: "Missed it"
Cons: "Give back money"

Pros: "Actually leaving the airport after 2 hours late was the best part."
Cons: "Not be hours late. And then when you finally land have to wait longer for an open gate cause they're doing work on the other ones. A lot of poor planning on this trip. Very disappointed in this experience cause I love to fly."

Pros: "Friendly crew. Landed early."

Pros: "The flight was average, but the quality of travel on Delta this year has been the worst I’ve ever seen. It’s average at best and I’m considering going back to American because I have yet to have a true Delta flight consistent with previous years, the whole reason I switched to Delta."
Cons: "Everything"

Cons: "Safe and happy travel!"

Pros: "Good communication about weather and delay"
Cons: "No delay. Consider dropping the $75 standby fee."

Pros: "VERY small plane and small narrow seats"
Cons: "Yes...not change my flight at the last minute and causing me to miss my connecting flight. Then making me reschedule my flight with only options that I now have (2) layover and then arrive in Korea another day later, that then caused me to miss my college orientation day!"

Cons: "No video screen"

Cons: "The comfort seats are not that comfortable"

Pros: "This was my daughter’s first solo travel home from college. She said the staff was helpful and kind. She loved that the flight was not over crowded. It was a smooth flight."
Cons: "Only negative thing she could say was her flight was delayed an hour. But that isn’t terrible considering all the holiday travelers."

Pros: "Good customer service in person"

Pros: "chwcking in was very easy."
Cons: "No in board beverages. On flight from RDU to PHL beverages were served."

Cons: "I had a 4 hour layover in Minneapolis, there was another flight to Denver that I meant I could’ve been home three hours earlier had I done standby, but because I had a cheaper ticket I was not allowed that opportunity. That makes absolutely no sense to me seeing as my flight was packed. I’m sorry my flight saved me money"

Pros: "Not like"
Cons: "I have Sky Team Elite Plus Platinum but not fare anything!"

Pros: "the flight was quick and it was fine. flight crew was polite and professional."
Cons: "i didn’t like that my knees were in the row in front of me, and we hit some pretty scary bumps. i get really anxious about turbulence."

Pros: "Ease of check in and friendly people"
Cons: "Marta"

Pros: "Did not wait for luggage."
Cons: "Food was marginal. Equipment had low ceiling under carry on shelf. No entertainment."

Pros: "Delta provided great entertainment options and it felt like endless food and drinks. The seats were also a bit more spacious than usual"

Cons: "They cancelled my ticket and did not inform me. Horrible exlefywith JustFly.com Beware of this organization"

Pros: "The exit row seat on this leg out of PHL to SLC did recline! No need for Delta Comfort+ unless you want to get off of the plane ... faster."
Cons: "For some reason, the pilot couldn't figure out how to adjust the cabin temperature for the first hour or so. This made the flight (and I was sitting in an exit row seat, right by the door which is usually cooler) uncomfortably hot and muggy. Food? No food. Thank goodness for Delta Lounge (even if it was the one in PHL). Just snacks make this a poor option for many. I don't know what is up, but the USB charger on the two monitors didn't work and neither did the outlet between the seats. And I have two different sets of cables "just in case" and they're the 3-in-1 so I can try to charge multiple devices (Apple, Android and Samsung) but nothing worked."

Pros: "Staff personalities"
Cons: "Waited extra 20 mins after door closed to-complete loading luggage"

Pros: "Staff was very courteous, the flight was smooth."
Cons: "There was no TV's on this flight."

Pros: "The staff"
Cons: "Nothing"

Pros: "Uneventful flight - boarding was great and there were no hassles."
Cons: "No food. No onboard entertainment."

Pros: "The flight itself was fine."
Cons: "The flight was delayed and it set off a slew of connection problems."

Pros: "Flight attendants were really kind"
Cons: "We were an hour late to leave so I missed my connecting flight and am currently stuck in Minneapolis for nearly 8 hours now"

Pros: "Stewardesses were sympathetic but could do nothing."
Cons: "A few flurries out of Philadelphia and flight is delayed 2.5 hrs, we therefore miss our connection and all they wanted us to do was spend 2 days in airport until next flight. Finally reached a compassionate soul at customer service who got creative and routed us to BCN via ATL, Miami and Madrid."

Pros: "We were probably in the air for 30 mins; great short flight. Plane wasn’t filled so had plenty of space."

Pros: "Crew was very attentive and curtious. Boarding was a bit more chaotic than usual and the gate agent made no announcement about boarding procedure, which certainly contributed to the scrum resulting. I arrived from the Skyclub several minutes prior to boarding time and was unable to find a path through to the Priority Boarding Lane. As boarding began she had to redirect at least seventy-five percent of those in front of me as they were not in First Class. Had she made one or more clear announcements about boarding procedure I rather doubt such a misunderstanding would have occurred with so many."
Cons: "For the third Delta flight in a row (all First Class) the crew did not make any effort to keep economy class cuctomers form storing bags in the First Class overhead or using the only First Class laveratory during flight. This flight I was unable to utilize the laveratory even once due to this excessive and continuous useage. Trying to do my bit to reduce our carbon footprint, yet I am sorely tempted to return to charter service when disrespect of the airlines own basic service class rules gets piled on top of TSA hassles."

Pros: "I had a window seat"
Cons: "bumpy flight"

Pros: "Flight attendant insisted to take my jacket. She didn’t return led. I forgot jacket in Cincinnati"
Cons: "I need my jacket"

Pros: "one i got to gate i could relax"
Cons: "scary making connection from AA flight arriving int'l terminal"

Pros: "I appreciated the kindness of the staff at each of our stops. From beginning to end they were polite, helpful, and kind!"

Pros: "All crew was great"
Cons: "We lost checked bag or it was taken, will loss a half day shopping for replacements. Compensation policy very unclear, not counting on getting any."

Pros: "Arrived on time crew worked had"
Cons: "my seat was BAD , no recline- right by bathroom one of which was out of order."

Cons: "On time"

Pros: "Liked the plane and the leg room. Had to switch itenary due to weather and the gate agent did a great job."

Pros: "Airplane was good, boarding was fast."

Cons: "The original flight was canceled and a new one substituted - basically they wanted to fly a smaller aircraft (via a different regional carrier) so the flight number changed. PHL did not have the new flight info displayed at the Departures board or on the screen at the gate. Caused a little anxiety."

Cons: "Cramped, uncomfortable tin can of an airplane. Barely tolerable for even an hour’s flight."

Cons: "Delta Flight #1661 I paid for 1st class. My first flight was late so I arrived at the gate after boarding began. When the gate attendant scanned my ticket another printed. When he handed me the ticket my seat had changed to seat 25E. I told the attendant that I had paid for first class. He asked me to step aside while he contacted his supervisor, Joe. Then I had to wait until ENTIRE flight had boarded which defeated part of the reason I paid for the upgrade. This was on top of the fact I was so thirsty because 1st flight didn't have drink service and because it was late I had to book it to the connection arriving sweaty, hot and needing to use the bathroom. I was told they had given my seat away to someone as a free upgrade. Joe offered me a $100 voucher to take other seat which was less than I paid for 1st class, plus the seat was a middle seat in the rear of the plane. When I told him as much, he tried to manipulate me by telling me that they would have to kick someone out of my seat. When I declined the downgrade, they made me stand by while they kicked someone out of my seat which was embarrassing and humiliating. Then, when they handed me a new boarding pass, it was not the seat I had paid for and selected, instead it was in the first row, which I’ve always hated because there is no under seat storage and I cannot keep my backpack with me. When I pay for first class, it is primarily so that I can board first and so that I have extra room to work (which I need access to my bag to do). While I was trying to take out the minimum of the things I needed from my bag and figure out how to manage without it, 3 times a flight attendant told me they had to take my bag (since I was the last person to board they tried to prevent me from using the bathroom and they were anxious to leave early). I tried to explain that Delta had prevented me from boarding earlier and that they gave away the seat I paid for which was NOT the first row."

Pros: "Service was great. Seating was OK. It was a brand new vehicle, so the (climate/air handling) was great."
Cons: "Boarding was not well organized."

Pros: "I liked that I didn't have to pay for a carry on and the blanket they gave me in flight to stay warm it was a great flight."
Cons: "Only dislike was that the flight was ending other than that no problems"

Pros: "Flight left on time despite the problems"
Cons: "We waited for one hour to be able to board. The system crashed so we were very lucky to arrive very early to the airport"

Cons: "WiFi"

Pros: "The movie was good and the seat is comfortable"

Pros: "The speed at which everything was handled."
Cons: "It was great"

Pros: "Nothing"
Cons: "Everything"

Cons: "Nothing"

Cons: "Equipment delay"

Pros: "Easy in easy out"
Cons: "Lack of entertainment"

Cons: "Delays sucked."

Pros: "Orderly boarding and on time."
Cons: "Nothing, all was great."

Pros: "good"

Cons: "Beat up baggage"

Pros: "Things went very smoothly."
Cons: "Long layover"

Cons: "Nothing. It was cancelled with little to none explanation"

Pros: "Price"
Cons: "Outdated airplanes"

Cons: "Fo"

Pros: "Arrived on time."
Cons: "Seat space is bad. Food is all for a fee."

Cons: "It was advertised that one can see entertainment through WIFi, but from my iPad, i can't connect to this WiFi. I tried several times until I just gave up."

Cons: "No food, no entertainment, no room for luggage, no good."

Pros: "There was an extra seat and they allowed me to move there. Superb entertainment!!"
Cons: "They guy behind me kept kicking my chair"

Cons: "They broke a wheel on my luggage."

Cons: "Delay due to mechanical glitch which should have been checked before boarding"

Pros: "Took off and arrived on time."

Pros: "All is well."
Cons: "No worthwhile complaints."

Pros: "It was just great"

Pros: "N/A"
Cons: "N/A"

Cons: "Trtvr Rrrrrcffrrcr rr crfrr"

Pros: "Clean equipment and good food"

Pros: "Good food & movies."

Cons: "No priority boarding for people with babies and toddlers"

Pros: "The Spanish staff were nice."
Cons: "Air plain was old."

Pros: "Everything was fine except..."
Cons: "Kosher meals were so so."

Cons: "The video screens weren't very good. You had to tap screen multiple times to select a choice."

Pros: "Very smooth"
Cons: "I didn't not like anything."

Pros: "There were charging outlets. Bravo!"
Cons: "They lost my baggage"

Pros: "Love the new entertainment on your own phone"
Cons: "Boarding took forever due to people's luggage in the overhead."

Cons: "Waiting on the tarmac to move to the gate for 30 minutes. NEVER AGAIN, I AM THROUGH!!!!"

Pros: "Did not travel from Phillies to Minneapolis. Due to change in program."

Cons: "Refer to above. Both flights were horrible."

Cons: ":)"

Pros: "All if the gate staff & on board staff that I interacted with were very friendly & efficient."
Cons: "Very tight/small & crowded waiting area."

Pros: "On time"
Cons: "Nothing"

Pros: "Engaged with customers no matter the seat preference"
Cons: "Boarding system not good !"

Cons: "Always delayed"

Pros: "Boarding was quick and got there on time to make connection"
Cons: "Nothing it was fine"

Cons: "I wasn't allowed on"

Cons: "last minute seat change to front of eco cabin (no foot room or small bag allowed)"

Cons: "Everything"

Cons: "It was constantly delayed and the airline was poorly treating its passengers in helping them get to their final destination. I was originally supposed to get into my final destination at 6pm, but I didn't get in until after 10pm central time due to those delays."

Pros: "First time traveling with my service dog. It was a very pleasant experience and everything went wonderfully!"

Pros: "No cancellations"

Pros: "It got me on the way"
Cons: "An outlet and letting me get into Canada"

Cons: "The plane was extremely full. No chance of social distancing."

Pros: "The text messages from United"

Cons: "Delay for 3 hours"

Pros: "Not much"
Cons: "Cheap seats. And why were we not seated together when we booked way in advance?"

Pros: "Minimal turbulence"

Pros: "Friendly staff and efficiency"
Cons: "None that I can think of"

Pros: "That I could take a traditional sized carry on and personal bag onto the flight for no additional charge. Flight crews very nice. Also complimentary beverage included. So nice to not get nickel and dimes to death."
Cons: "Happy to get free WiFi but couldn’t get it to work. Also, a GF snack like nuts that don’t contain wheat would be nice"

Pros: "Crew was great, and boarding was a breeze."
Cons: "For the price, there should be better food, and a bit more breathing room."

Pros: "Everything was on time and it was a good flight"

Cons: "Flight was uncomfortable. Airline lost my luggage and were very rude when i only asked questions as to what could have happened! Never flying with United again. I still don't have my luggage."

Pros: "Nothing"
Cons: "4 hrs late departure - missed my appointment"

Pros: "My father passed away earlier that day and I needed a ticket quickly to fly home. At the airport I was a mess and the airline counter attendant was so amazing helping me ( I had never flown United and had no idea about their luggage policies ect..). She quickly pulled me aside.. helped me with checking in and did her best to fine me another seat thatvwas better than the one I had already chosen.Also, she gave me a hug and her condolences. Flying with an airline that has heart helped me so much during one of the most difficult times of my life. I will absolutely fly with them again."
Cons: "No complaints ... but I paid for a movie to take my mind off of my father's passing during the flight and there was a short in my monitor for our whole row. It kept cutting in and out and "searching for signal", I only was able to see 1/4 of the movie I paid for with all the interruptions in signal."

Pros: "Well organized."

Cons: "Uncomfortably warm!!"

Pros: "Food was good"
Cons: "Seating and maybe some different reading material"

Pros: "It had movie screens quite old but better than none"

Pros: "Clean aircraft, swift flight"
Cons: "Seat was changed to last row/middle seat (not what initially booked or confirmed with online check-in). Before takeoff, attendant moved all passengers in back row to alternate seats. Which meant that I was no longer traveling with my colleague. Unfortunately, that made our intended meeting time impossible."

Pros: "Stewardess was nice"
Cons: "Delayed, then when we got here no lanes to land. Seats are way to small for normal sized people."

Pros: "On time, crew was very friendly"

Cons: "Just give free wi fi already"

Cons: "Very bumpy ride....but I realize that can't be helped"

Pros: "Stroopwaffle!"
Cons: "Cramped plane. Not enough space. Late boarding and then sat on the tarmac for a while."

Pros: "service on time"
Cons: "snacks very little amounr"

Pros: "I fly weekly, but try never to book United because there are always issues with my support animal. Without fail, regardless of the city, the agents at check-in do not know what to do. Each time I'm met with annoyance at having to check me in, and I usually end up calling either the disabilities desk and handing the agent my phone, or asking for the CRO. I have to leave an extra 45 minutes to accommodate flying United every time -- ridiculous. This time I also got a load of unprofessional gate agents cooing and awwing at my my support animal, and trying to pet him. When this happens I always simply state, "please don't" and this was key with rudeness as well. United please provide us with more professional and adequately trained staff at the airports. Once we're on the planes it's fine. But you seem to have VERY low hiring standards for airport staff"

Pros: "All good, no complaints!"

Pros: "Everything went smoothe!"
Cons: "Not 1 thing."

Pros: "Tv"
Cons: "The tv kept shutting on and off"

Pros: "Flew on Delta Airlines"
Cons: "Had to run to Delta and barely made that connection."

Pros: "Updated interior. Those new seats make it feel like a lot more room."

Pros: "The crew was nice and great with the three very young kids sitting in front of me. Left and landed on time!"
Cons: "Very cramped seating. The on flight entertainment kept searching for a satillite signal, only ever staying on for 30 seconds before searching for the next 3 minutes."

Pros: "Seats are comfy"
Cons: "Food service sucks"

Cons: "The 2 hour delay"

Pros: "I like that they waited for me before they took off"

Pros: "I'm handicapped and the help getting from terminal to terminal. The people were very helpful."
Cons: "I have metal leg braces. I had to remove them to get in the seat. So the flight was uncomfortable. It would be nice if the plane could have handicapped seating.I know I wouldn't have minded paying a little more for comfortable seating."

Pros: "Pilots and some flight attendants were kind and friendly."
Cons: "On the return home, I was seated in the last row right next to the lavatory. I was bumped into at least 25 times by other passengers and flight attendants. I would suggest removing the aisle seat on both sides."

Cons: "Flight was delayed, missed connection, chose to go to Minneapolis and was booked on a flight that I didn't have time to get to the terminal, so was rebooked a 3rd time, missed my shuttle, have no idea where my luggage is"

Cons: "My connection to YYZ was cancelled and I was not even rebooked to the next flight. I needed to buy a ticket on Air Canada in order to get there. Every time I fly United I find myself asking "why in the hell am I flying United?""

Pros: "Getting off the plane"
Cons: "Very delayed flight No updates for departure, empty desk until it was time to depart, for why we sat on the runway for so long, no update on landing time or that we were starting descent"

Pros: "Good service"

Cons: "Where do I start. Let's start with booking and the lack of knowledge, inability to listen and respond in an appropriate manner, and the fact that after I asked to speak to a manager due to the previous issues with the agent, and after being transferred all I needed was some understanding and support due to a family emergency and instead I get a short rude push back and then hung up on by the manager after I expressed my struggle and desperation for help. The lack of empathy and just the overall experience was beyond horrible, and if it wasn't for the desperate situation I was in I would have never used your services."

Pros: "On time bags made connection"

Pros: "Great"

Pros: "Everything was perfect"

Pros: "Got me safely to my destination. Other passengers were friendly and helpful. Sf and Vic airports nice. flight attendants passably pleasant. No food that I was aware of. Entertainment at least there was a wifi option since there were no screens."
Cons: "Check in agents all might as well have been robots, but with bad attitude. Even at the star alliance gold checkin desk the agent was clearly unhappy/furious (seem to be ongoing issues with the system/ machine frustrating him) and was consistently abrupt and cold though our interaction. He did help by lifting bags onto weigh and to press buttons to get the tickets issued, but I would have a much better experience of United if he has shown any sign of warmth or even smiled. I was struggling with a baby in a carrier, and several suitcase, and he didn't show any sign of humanity. The guy who labeled our bags was a bit nicer. The team overal though just barked instructions at the customers, never looked them in the eyes, and seemed to all hate their jobs. We got our boarding passes issues successfully, yes, but I felt on pins and needles like I had to be very careful not to offend anyone.... Which I don't think is what you want your passengers to feel at the start of a flight."

Pros: "Friendly service, nice and comfortable."

Cons: "The seat cushions were in terrible condition!!!"

Pros: "Departures and arrivals were on time. Boarding was efficient. Baggage arrived in claim area quickly. No stress or hassle."

Pros: "Female pilot was the best I've ridden with"
Cons: "The delay was horrible."

Pros: "It was awesome fckin amazing"
Cons: "Nothing"

Pros: "Fast and easy"
Cons: "Nothing"

Pros: "Complimentary something! Entertainment options would be nice."
Cons: "No complimentary anything! No entertainment:("

Cons: "Good"

Cons: "Everything!!!!"

Pros: "Yes!"
Cons: "N/A"

Pros: "Personnel"

Pros: "Estaba todo bien."
Cons: "Pero no me gusto q havia mucha turbulencia. Y mis photos queria esplotar."

Pros: "Boarding was easy and efficient Staff was friendly Space was clean"
Cons: "The plane had a few concerning sounds ."

Pros: "Good"

Pros: "Kind attentive staff"
Cons: "We had to wait a half hour, or so, On the tarmac before we could leave Philly"

Cons: "Late boarding and take off.... lost 40 min"

Pros: "Noting"

Pros: "Getting to my destination. Newer plane. Crew nice, helpful."
Cons: "Seats too crowded. Knees hit seat in front of me. Difficult to get into seat because of front/back crowding. Tray is a joke."

Cons: "No wifi"

Pros: "frontier was the best"

Cons: "Rude service"

Cons: "Kid vomit"

Pros: "Cost"
Cons: "App did not work to get boarding pass. No food not even a glass of water. Give people drinks! Let people have a carry on. Probably not fly Frontier again. It was better when you could have a carry on."

Cons: "Only 1 carry on allowed ( purse counts!)."

Pros: "No seat back lowering!"
Cons: "One hour late"

Pros: "Courteous staff and easy boarding on he brand new plane!"
Cons: "You have to pay for any food or drink on the plane."

Pros: "Boarding was organized. The plane was clean. Staff were courteous."

Pros: "Tried to get a refund voucher. No luck. Sad."

Pros: "Not one thing"
Cons: "FRONTIER."

Pros: "We were at our destination 40 minutes early!"
Cons: "paying for any beverage other than water"

Pros: "Nice staff."
Cons: "Delay later than delay. Then another delay on tarmac."

Pros: "No problems whatsoever."
Cons: "Traffic getting to the airport."

Cons: "Not enough staff in the boarding area to ask about luggage etc"

Pros: "Everything"
Cons: "Nothing"

Cons: "DELAYED"

Cons: "Charged me $200 for name change that I did not nerd"

Pros: "I had a baggage that met the online specifications- 14X8 but they still charged me $60 because it was not a "personal bag" -- they kept referring to it as a carryon."

Pros: "They share food no baby asked me, even to buy."

Cons: "That we had to buy drinks and snacks"

Pros: "The employees were all fantastic, very friendly and helpful"
Cons: "Would like wifi."

Cons: "Delayed almost 2 hrs....sitting on the plane..."

Cons: "Not enough leg room. It really sucked!"

Pros: "Low cost tickets"
Cons: "High cost for luggage"

Pros: "Nothing"
Cons: "The hassle with my bag"

Cons: "the pilot almost crashed the plane"

Cons: "Nothing was complimentary"

Cons: "Charging ridiculous amounts for a carryon...60 dollars is ridiculous! Never again."

Cons: "Bag fee is expensive."

Pros: "And it was cheap"

Cons: "Paying for a seat assignment on line before going to airport. Baggage charges too high. These extra costs added an additional 49% to my ticket. Unhappy with your airline"

Pros: "The attention"
Cons: "No free soda and snack"

Pros: "Decent legroom"
Cons: "Everyone costs additional"

Pros: "Rates"

Pros: "Everything"

Pros: "Everyone were really nice. The service was good."
Cons: "I didn't like the following fact. I was charged $35.00 for a carrying on bag. When the bag met all the requirements needed for a carry on. When other customers had larger bag and they were not charged. The bag was small enough to fit under the seat. I should be re-enburse the $35.00 I was charged. Thank you"

Pros: "The spirit employees were very helpful when I checked in"

Pros: "Uncomfortable seat"
Cons: "Turbulence"

Pros: "Yes"
Cons: "Yes"

Pros: "The price"
Cons: "Communication"

Cons: "Spirit is unorganized and understaffed"

Pros: "EVERYthing"

Cons: "No Wifi, no seat reclining, late departure and delays"

Cons: "20 min Delayed departure"

Pros: "Everything was fantastic. Did get any food or drink tho. Staff was phenomenal!"

Pros: "Got what paid for"

Pros: "Price was right"
Cons: "Reserved my seat but didn't get it; cramped."

Cons: "I wasn't flying to hawaii"

Pros: "It was better than Frontier Airlines."

Pros: "NOTHING"
Cons: "Everything"

Cons: "Very uncomfortable ride. We a t-shirt hard ,zero leg room"

Pros: "They suck so bad!!!"
Cons: "They just suck really bad!!!"

Pros: "Nothing"
Cons: "The airplane"

Pros: "Nothing"
Cons: "Everything about it"

Pros: "Everything."

Pros: "Nothing"

Pros: "Nothing!"
Cons: "The plane was delayed! They have all these secret fees"

Pros: "Needs more room. Packed like sardines"

Pros: "Cheap and quick"
Cons: "Impersonal"

Cons: "No internet option to my knowledge."

Pros: "Good seat, enough room"
Cons: "Cost for food"

Pros: "Nothing"
Cons: "Fees, late arrival"

Pros: "Price was good. i ]will fly Spirit whenever possible and I will rnecomend often"
Cons: "Delay other than I did get a reminder ."

Cons: "Flights delayed multiple times both ways."

Pros: "The whole experience. Very friendly."
Cons: "No complaints"

Pros: "I got to Minnesota for cheap"
Cons: "Nothing was unexpected"

Pros: "good folks wo4rk there, kind and helpful"
Cons: "cost too high for no comfort/frills"

Pros: "Low fares. Great service."
Cons: "Nothing."

Pros: "All was great but the extra large seat did not recline?"

Pros: "IT WAS FAST TO GET SEATED"
Cons: "There was no leg space at all"

Pros: "Nothing"
Cons: "Everything"

Cons: "Tiny tray tables"

Cons: "Did not do final leg"

Pros: "Zero."
Cons: "everything."

Pros: "Nothing"
Cons: "Everything"

Cons: "So late!"

Pros: "the service was wonderful, the l8nes wwnt by quickly"

Pros: "No frills or hassles"

Pros: "The pilot made jokes about how cheap spirit airlines is."

Pros: "Low cost"
Cons: "Crowded seating"

Pros: "Nothing"
Cons: "Everything, the staff was rude and unpleasing."

Cons: "Late boarding."

Cons: "The plane smelled overwhelmingly like urine."

Cons: "Delayed like many spirit flights I have been on in the past"

Pros: "The ticket price was wonderful."
Cons: "Paying for luggage, seat, etc. - everything is an up charge."

Cons: "Hidden added fees"

Read more about Delta
COVID-19 information

Safety measures for airlines flying from Philadelphia to Colorado

Airlines flying from Philadelphia to Colorado have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights from Philadelphia to Colorado

Mandatory masks

Masks required on board, masks provided on flights from Philadelphia to Colorado

Social distancing seating

Middle seats unavailable to book on flights from Philadelphia to Colorado

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from Philadelphia to Colorado

Book cheap flights from Philadelphia to Colorado

Recent round-trip flight deals

9/14
Tue
1 stop
Spirit Airlines
17h 48m
PHL - DEN
9/21
Tue
1 stop
Spirit Airlines
7h 56m
DEN - PHL
9/25
Sat
1 stop
Spirit Airlines
8h 13m
PHL - DEN
9/28
Tue
1 stop
Spirit Airlines
7h 56m
DEN - PHL
9/18
Sat
1 stop
Spirit Airlines
8h 13m
PHL - DEN
9/25
Sat
1 stop
Spirit Airlines
8h 33m
DEN - PHL
8/24
Tue
1 stop
Spirit Airlines
12h 08m
PHL - DEN
8/31
Tue
1 stop
Spirit Airlines
7h 52m
DEN - PHL
9/14
Tue
1 stop
Spirit Airlines
11h 38m
PHL - DEN
9/18
Sat
1 stop
Spirit Airlines
8h 33m
DEN - PHL
9/4
Sat
1 stop
Spirit Airlines
12h 08m
PHL - DEN
9/7
Tue
1 stop
Spirit Airlines
7h 56m
DEN - PHL
8/28
Sat
1 stop
Spirit Airlines
12h 08m
PHL - DEN
8/31
Tue
1 stop
Spirit Airlines
10h 37m
DEN - PHL
9/29
Wed
1 stop
Spirit Airlines
11h 38m
PHL - DEN
10/4
Mon
1 stop
Spirit Airlines
7h 56m
DEN - PHL
8/25
Wed
1 stop
Spirit Airlines
12h 08m
PHL - DEN
8/28
Sat
1 stop
Spirit Airlines
10h 37m
DEN - PHL
8/21
Sat
1 stop
Spirit Airlines
12h 08m
PHL - DEN
8/28
Sat
1 stop
Spirit Airlines
10h 37m
DEN - PHL
8/23
Mon
1 stop
Spirit Airlines
12h 08m
PHL - DEN
8/30
Mon
1 stop
Spirit Airlines
7h 52m
DEN - PHL
9/20
Mon
1 stop
Spirit Airlines
19h 27m
PHL - DEN
9/25
Sat
1 stop
Spirit Airlines
8h 33m
DEN - PHL
9/15
Wed
2 stops
Spirit Airlines
22h 37m
PHL - DEN
9/21
Tue
1 stop
Spirit Airlines
8h 33m
DEN - PHL
9/20
Mon
1 stop
Spirit Airlines
19h 27m
PHL - DEN
9/24
Fri
1 stop
Spirit Airlines
7h 56m
DEN - PHL
8/24
Tue
1 stop
Multiple Airlines
7h 00m
PHL - DEN
9/1
Wed
1 stop
Multiple Airlines
7h 52m
DEN - PHL
9/28
Tue
2 stops
Multiple Airlines
24h 06m
PHL - COS
10/4
Mon
3 stops
Multiple Airlines
18h 17m
COS - PHL
8/26
Thu
1 stop
Frontier
16h 20m
PHL - DRO
9/4
Sat
1 stop
Frontier
16h 00m
DRO - PHL
9/28
Tue
1 stop
United Airlines
28h 40m
PHL - COS
10/4
Mon
2 stops
United Airlines
15h 17m
COS - PHL
1/26
Wed
1 stop
American Airlines
7h 15m
PHL - GJT
1/30
Sun
1 stop
American Airlines
6h 40m
GJT - PHL
1/25
Tue
1 stop
Delta
8h 45m
PHL - EGE
1/26
Wed
1 stop
Delta
7h 37m
EGE - PHL
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Recent one-way flight deals

9/14
Tue
1 stop
Spirit Airlines
11h 38m
PHL - DEN
8/24
Tue
1 stop
Spirit Airlines
12h 08m
PHL - DEN
8/24
Tue
1 stop
Spirit Airlines
12h 08m
PHL - DEN
8/28
Sat
1 stop
Spirit Airlines
12h 08m
PHL - DEN
8/18
Wed
1 stop
Spirit Airlines
12h 08m
PHL - DEN
8/17
Tue
1 stop
Spirit Airlines
12h 03m
PHL - DEN
8/31
Tue
1 stop
Spirit Airlines
12h 08m
PHL - DEN
8/19
Thu
1 stop
Spirit Airlines
12h 08m
PHL - DEN
8/17
Tue
1 stop
Spirit Airlines
29h 15m
PHL - DEN
8/30
Mon
1 stop
Spirit Airlines
11h 55m
PHL - DEN
8/21
Sat
1 stop
Spirit Airlines
12h 08m
PHL - DEN
8/17
Tue
1 stop
Frontier
17h 30m
PHL - DEN
9/1
Wed
1 stop
Multiple Airlines
16h 47m
PHL - DEN
9/8
Wed
2 stops
Frontier
26h 36m
PHL - DEN
9/14
Tue
2 stops
Multiple Airlines
24h 06m
PHL - COS
9/21
Tue
2 stops
Multiple Airlines
24h 06m
PHL - COS
9/14
Tue
3 stops
Multiple Airlines
21h 42m
PHL - COS
8/31
Tue
1 stop
United Airlines
18h 37m
PHL - ALS
9/14
Tue
2 stops
American Airlines
9h 21m
PHL - GJT
9/13
Mon
2 stops
Delta
10h 56m
PHL - GJT
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