$71 Find Cheap Flights from Colorado to Pennsylvania

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Low seasonJanuary
High seasonJuly
Cheapest flight$71
Best time to beat the crowds with an average 0% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Denver to Philadelphia

FAQs for booking flights from Colorado to Pennsylvania

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

    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 Colorado to Pennsylvania.

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

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

    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 Colorado to Pennsylvania 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 Colorado to Pennsylvania?

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

  • Which is the cheapest airport to fly into in Pennsylvania?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Pennsylvania is Allentown-Bethlehem Airport (ABE), with an average flight price of $151.

  • What is the cheapest day to fly to Pennsylvania?

    Based on KAYAK data, the cheapest day to fly to Pennsylvania is Wednesday where round-trip tickets can be as cheap as $299. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $454 on average.

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

    The cheapest time of day to fly to Pennsylvania is generally at night, when round-trip flights cost $245 on average. Morning departures are around 66% more expensive than evening flights, on average. The most expensive time of day to fly to Pennsylvania is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $529.

  • What is the cheapest flight to Pennsylvania?

    The cheapest ticket to Pennsylvania from Colorado found in the last 72 hours was to Allentown, at $50 round-trip. The most popular route is Denver (DEN) to Philadelphia (PHL) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $119.

  • What is the cheapest month to fly from Colorado to Pennsylvania?

    The cheapest month for flights from Colorado to Pennsylvania is August, when tickets cost $353 (return) on average. On the other hand, the most expensive months are November and October, when the average cost of round-trip tickets is $734 and $623 respectively.

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

    To get a below average price on the flight from Colorado to Pennsylvania, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

  • How long is the flight to Pennsylvania?

    An average nonstop flight from Colorado to Pennsylvania takes 6h 10m, covering a distance of 1610 miles. The shortest route is Denver (DEN) to Pittsburgh (PIT) with an average flight time of 2h 50m.

  • What are the most popular destinations in Pennsylvania?

    Based on KAYAK flight searches, the most popular destination is New York (68% of total searches to Pennsylvania). The next most popular destinations are Washington, D.C. (16%) and Philadelphia (11%). Searches for flights to Pittsburgh (4%), to Harrisburg (1%) and to Elmira (0%) are also popular.

Top 5 airlines serving from Colorado to Pennsylvania

 
Need help choosing which airline to fly with from Colorado to Pennsylvania? 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 4287 reviews
7.1Food
8.2Boarding
8.6Crew
7.6Entertainment
8.0Comfort
Airline reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

6.0 GoodDavid, Jun 2025BWI - COS
Read more Southwest reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

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

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

I am still upset that my bag was lost on a recent trip to Rome ; we were inconvenienced and out €150 Euros ; delta has refused to reimburse us

I am very bothered by the events today. I can't believe the flight attendants allowed someone to take my seat and made me move. It was embarrassing. I was in the right. The lady just didn't want move. I can't believe delta would allow this to stand and disrespect my rights as a passenger. The lady complained about her leg and that she couldn't move. Firstly somehow she was able to make it to row 24. Not sure how much her leg could have hurt. Secondly, I'm in plenty of pain myself. I just finished chemotherapy a several weeks ago. My body is constantly sore. Yet deltas flight attendants didn't appropriately protect my rights. In the end they found me a seat on the plane but I want to understand how delta can operate this way. They in essence allowed a bully to get their way.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

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

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

I don’t understand the purpose of the orange “priority” tag on my bag. This tagged, my bag is last or near to the last bag to come down the carousel at IAH.

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Overall, a good experience. The food, however, was subpar. The breakfast was a joke.

I was late from Jacksonville, FL but the limited interaction I had with the Philly crew was great.

The delays and cancellations kept me stuck in Miami for an additional 24 hours, and the whole thing seemed extremely disorganized

Everything was great except British airways lost our luggage that was gate checked all the way through to Italy. No one knows currently where one is and the other one may be in route to Amsterdam to meet us but not sure. If you can Hale’s it would be awesome. The website is not helpful.

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

the pilot that landed this flight in Philadelphia did an amazing job, the weather was absolutely terrible and we landed safely.

The flight was just perfect! We left a few minutes early, had a smooth flight and fortunately had landed before the terrible accident that took off from North Philadelphia airport shortly thereafter.

Staff at the gate were incredibly rude, hostile and threatening. Never fly American Airlines.

I never got to experience the flight because they delayed my first flight and I missed this one. Then Frontier didn't want to help me rebook a flight to get me to my final destination.

The Boarding process in Denver was chaotic, and since the line was so long, we were lined up very far from the gate. If there were any announcements from the gate staff, we didn't hear them. The flight attendants were spectacular. The only negative part of the flight was sitting by a 2 1/2 year old who was unruly and unfortunately had parents that matched his behaviors. Also, the restaurants in Denver on the E concourse, they didn't have food (passengers could only order 1 item on the entire menu) or the restaurants had 12-14 people waiting for orders to be prepared and another 6 people waiting to order. If you have a layover in Denver and need to grab food, be prepared to visit the shops with pre-packaged sandwiches, or you can visit another concourse but it may take a while to transit throughout the airport.

Everything went as planned. Crew was great. Seats were still not that comfortable.

they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation

The seats were extremely hard and uncomfortable, even for a budget airline.

Boarding was very well executed. Got my bag right away.

Overall experience good. There was no food and seats were not terribly comfortable.

There was nothing to like, flight delayed had to move to different departure areas, disorganized to say the leasr

There were a lot of issues every step of the process. Check in, security, boarding, and dealing with luggage. Plus the money you think you are saving you end up using in hidden fees.

The flight attendant was arguing with a passenger before takeoff. The passenger was frustrated but the flight attendant should have handled it with grace, but instead she was nasty and rude. The seats were comfortable and the flight was uneventful. I wish we didn’t have to pay for drinks or snacks but that’s what you get with a budget airline.

Book cheap flights from Colorado to Pennsylvania

Recent round-trip flight deals

9/19Fri
nonstopFrontier
3h 26mDEN-DCA
9/22Mon
nonstopFrontier
4h 07mDCA-DEN
$176
7/15Tue
nonstopFrontier
3h 39mDEN-PHL
7/22Tue
nonstopFrontier
4h 13mPHL-DEN
$176
8/19Tue
nonstopSouthwest
3h 20mDEN-IAD
8/23Sat
nonstopSouthwest
3h 50mIAD-DEN
$177
9/23Tue
1 stopAmerican Airlines
7h 54mDEN-DCA
10/1Wed
1 stopAmerican Airlines
7h 21mDCA-DEN
$197
8/23Sat
nonstopAmerican Airlines
3h 41mDEN-PHL
8/27Wed
nonstopAmerican Airlines
4h 20mPHL-DEN
$197
8/28Thu
nonstopSouthwest
3h 20mDEN-IAD
9/10Wed
nonstopSouthwest
3h 40mIAD-DEN
$197
9/3Wed
nonstopDelta
3h 47mDEN-LGA
9/20Sat
nonstopDelta
4h 31mLGA-DEN
$197
11/12Wed
nonstopDelta
3h 48mDEN-LGA
11/17Mon
nonstopDelta
4h 33mLGA-DEN
$217
10/8Wed
1 stopUnited Airlines
5h 43mDEN-IAD
10/14Tue
nonstopUnited Airlines
3h 48mIAD-DEN
$233
7/10Thu
nonstopUnited Airlines
3h 52mDEN-EWR
7/14Mon
nonstopUnited Airlines
4h 21mEWR-DEN
$247

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Recent one-way flight deals

9/16Tue
1 stopFrontier
9h 44mDEN-PHL
$71
10/25Sat
1 stopFrontier
8h 00mDEN-LGA
$71
8/20Wed
nonstopUnited Airlines
3h 23mDEN-IAD
$89
10/11Sat
nonstopAmerican Airlines
3h 30mDEN-PHL
$94
10/15Wed
1 stopAmerican Airlines
6h 44mDEN-IAD
$98
8/13Wed
nonstopUnited Airlines
3h 38mDEN-PHL
$99
7/22Tue
nonstopSouthwest
3h 20mDEN-IAD
$99
7/15Tue
nonstopSouthwest
3h 35mDEN-PHL
$104
7/22Tue
nonstopDelta
3h 44mDEN-LGA
$109
8/4Mon
1 stopDelta
6h 04mDEN-IAD
$119

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Last minute flights from Colorado to Pennsylvania

Last minute flight, train and bus deals

6/17Tue
nonstopFrontier
3h 40mDEN-PHL
6/24Tue
nonstopFrontier
4h 14mPHL-DEN
$224
6/17Tue
nonstopFrontier
3h 40mDEN-PHL
6/20Fri
nonstopFrontier
4h 28mPHL-DEN
$244
6/13Fri
multi-stopAmerican Airlines
7h 45mDEN-EWR
6/15Sun
multi-stopAmerican Airlines
8h 20mEWR-DEN
$257
6/13Fri
multi-stopAmerican Airlines
7h 45mDEN-EWR
6/20Fri
multi-stopAmerican Airlines
7h 48mEWR-DEN
$267
6/16Mon
multi-stopDelta
7h 01mDEN-JFK
7/16Wed
nonstopDelta
4h 54mJFK-DEN
$337
6/15Sun
multi-stopDelta
7h 01mDEN-JFK
7/15Tue
nonstopDelta
4h 27mJFK-DEN
$338
6/17Tue
nonstopSouthwest
3h 40mDEN-LGA
6/18Wed
multi-stopSouthwest
6h 45mLGA-DEN
$373
6/17Tue
multi-stopSouthwest
7h 25mDEN-LGA
6/18Wed
multi-stopSouthwest
8h 10mLGA-DEN
$397
6/17Tue
nonstopUnited Airlines
3h 45mDEN-EWR
7/15Tue
nonstopUnited Airlines
4h 27mEWR-DEN
$413
6/17Tue
nonstopUnited Airlines
3h 26mDEN-IAD
6/18Wed
nonstopUnited Airlines
3h 56mIAD-DEN
$417

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Everything you need to know for your flight to Pennsylvania

Cabin class types available on flights to Colorado

Cabin classes available on flights to Colorado. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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