$89 Find Cheap Flights from Pennsylvania to Colorado

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Low seasonApril
High seasonJuly
Cheapest flight$89
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Washington Dulles Airport to Denver

FAQs for booking flights from Pennsylvania to Colorado

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

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

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

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Colorado is Denver Intl Airport (DEN), with an average flight price of $198.

  • What is the cheapest day to fly to Colorado?

    Based on KAYAK data, the cheapest day to fly to Colorado is Wednesday where round-trip tickets can be as cheap as $329. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $386 on average.

  • 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 $226 on average. Morning departures are around 8% cheaper than evening flights, on average. The most expensive time of day to fly to Colorado is generally in the evening, which is peak travel time and where the average cost of a ticket is $423.

  • What is the cheapest flight to Colorado?

    The cheapest ticket to Colorado from Pennsylvania found in the last 72 hours was to Denver, at $106 round-trip. The most popular route is Allentown (ABE) to Denver (DEN) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $106.

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

    The cheapest month for flights from Pennsylvania to Colorado is November, when tickets cost $423 (return) on average. On the other hand, the most expensive months are March and January, when the average cost of round-trip tickets is $598 and $515 respectively.

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

    To get a below average price on the flight from Pennsylvania 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.

  • How long is the flight to Colorado?

    An average nonstop flight from Pennsylvania to Colorado takes 5h 43m, covering a distance of 1632 miles. The shortest route is Pittsburgh (PIT) to Denver (DEN) with an average flight time of 3h 20m.

  • What are the most popular destinations in Colorado?

    Based on KAYAK flight searches, the most popular destination is Denver (87% of total searches to Colorado). The next most popular destinations are Colorado Springs (4%) and Aspen (3%). Searches for flights to Grand Junction (2%), to Montrose (1%) and to Vail (1%) are also popular.

Top 5 airlines serving from Pennsylvania to Colorado

 
Need help choosing which airline to fly with from Pennsylvania 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 4278 reviews
7.1Food
8.2Boarding
8.0Comfort
8.6Crew
7.6Entertainment
Airline reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

10.0 ExcellentMichael, Jun 2025SMF - SEA
Read more Southwest reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

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

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!

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

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.

Tight! Seats are not designed for those of us who wear extra-large clothes.

The non-stop flight from Grand Rapids was excellent. I neither expected or needed a budget flight and Allegiant made the trip easy and for an affordable price, Arriving at the Mesa Airport (AZA) is a delight compared to the international airport. For our return flight, we were able to arrive 75 minutes before the flight, return the rental car, check our bag and make it to the gate in plenty of time. That would never happen at most airports.

Easiest flights I’ve ever taken. Plane was comfortable without overly crowded seating.

Terrible. Still have not received the refund from them. They sent it to some account that I don't even know. Spoke with costumer service and they are unable to help.

I didn’t like it at all. I miss my second flight because of the delay on Allegiant Air now I m stuck in MCO.

Good, but a bit late on take off after loading. Don't like charging for carry ons!

First time flying with them and will definitely fly again in the future. Crew was so nice and friendly, fought was seamless. They are simple planes, no entertainment, but it’s fine for a short flight or if you have personal devices Rates are competitive, and they did so well with keeping the flight on time after a tropical storm, where other airlines had delays and cancellations.

They boarded passengers that sat in the back of the plane first, making boarding very efficient.

I didn't even take this flight. My plans changed and I couldn't get ahold of customer service and the website kept breaking down during the attempt to change the flight. I wound up taking another airline entirely and eating the cost.

The worst flying experience ever 3 delays. No accommodations. Had to deboard the plane after being delayed.

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

It’s a great flight. Service is good. Staff is awesome.

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

Terrible. The flight was delayed two hours due to weather. Then when we got on the plane, the first pilot ended up timing out and we had to wait for a second pilot. Second pile came on board and we tax it out. Had to return back to the gate because of an unruly passenger. Then the copilot timed out. Had to wait for new copilot. Also had to wait for maintenance to check for fuel. Then found out the second pilot timed out and we had to wait for a third pilot. Was ready to go and then needed maintenance again for another issue. In the end, it was 2 o’clock in the morning when they announced that the flight couldn’t go because the third pilot and the second copilot had timed out.

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.

One of the best flights I’ve had. So smooth.

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 liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

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.

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?

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.

Allowed me to chose my seat without extra charge (I purchased full-price ticket) and boarding was in group1. Didn't even serve water.

Stuck in Phoenix for two days, not even a hotel voucher offered.

Every day about it was very different all the boarding pass where all wrong l miss flight no refund all crazy

Book cheap flights from Pennsylvania to Colorado

Recent round-trip flight deals

7/15Tue
nonstopFrontier
4h 13mPHL-DEN
7/22Tue
nonstopFrontier
3h 39mDEN-PHL
$170
7/21Mon
nonstopFrontier
3h 56mDCA-DEN
7/26Sat
nonstopFrontier
3h 26mDEN-DCA
$176
8/16Sat
nonstopSouthwest
3h 40mIAD-DEN
8/20Wed
nonstopSouthwest
3h 20mDEN-IAD
$177
8/6Wed
1 stopSouthwest
7h 35mIAD-DEN
8/11Mon
nonstopSouthwest
3h 20mDEN-IAD
$187
9/13Sat
1 stopAmerican Airlines
6h 29mIAD-DEN
9/13Sat
1 stopAmerican Airlines
6h 47mDEN-IAD
$191
9/13Sat
1 stopAmerican Airlines
6h 53mDCA-DEN
9/13Sat
1 stopAmerican Airlines
6h 33mDEN-DCA
$191
10/7Tue
1 stopUnited Airlines
7h 23mLGA-DEN
10/25Sat
nonstopUnited Airlines
3h 48mDEN-LGA
$234
8/8Fri
1 stopAllegiant Air
16h 30mIAD-DEN
8/10Sun
1 stopAllegiant Air
18h 41mDEN-IAD
$238
7/29Tue
nonstopUnited Airlines
4h 36mLGA-DEN
8/3Sun
1 stopUnited Airlines
6h 11mDEN-LGA
$242
7/22Tue
1 stopAllegiant Air
26h 21mEWR-DEN
7/26Sat
1 stopAllegiant Air
22h 59mDEN-EWR
$244

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Recent one-way flight deals

8/21Thu
nonstopUnited Airlines
3h 49mIAD-DEN
$89
7/12Sat
nonstopFrontier
4h 20mLGA-DEN
$89
9/13Sat
nonstopUnited Airlines
3h 56mDCA-DEN
$89
7/15Tue
nonstopFrontier
4h 13mPHL-DEN
$90
10/15Wed
nonstopAmerican Airlines
4h 19mPHL-DEN
$94
8/13Wed
1 stopSouthwest
5h 15mDCA-DEN
$94
10/11Sat
nonstopAmerican Airlines
4h 19mPHL-DEN
$95
8/11Mon
2 stopsSouthwest
7h 25mDCA-DEN
$104
7/18Fri
1 stopAllegiant Air
16h 30mIAD-DEN
$112
9/7Sun
1 stopAllegiant Air
21h 55mEWR-DEN
$113

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Last minute flights from Pennsylvania to Colorado

Last minute flight, train and bus deals

6/21Sat
multi-stopFrontier
7h 04mIAD-DEN
6/26Thu
multi-stopFrontier
8h 18mDEN-IAD
$200
6/21Sat
multi-stopFrontier
12h 42mJFK-DEN
6/29Sun
multi-stopFrontier
8h 25mDEN-JFK
$200
6/21Sat
nonstopUnited Airlines
4h 18mEWR-DEN
6/30Mon
nonstopUnited Airlines
3h 44mDEN-EWR
$333
6/21Sat
multi-stopSouthwest
9h 55mLGA-DEN
6/28Sat
nonstopSouthwest
3h 45mDEN-LGA
$347
6/20Fri
multi-stopAmerican Airlines
6h 44mLGA-DEN
7/3Thu
multi-stopAmerican Airlines
7h 05mDEN-LGA
$353
6/21Sat
multi-stopSouthwest
9h 55mLGA-DEN
6/30Mon
nonstopSouthwest
3h 45mDEN-LGA
$357
6/21Sat
multi-stopAmerican Airlines
7h 03mLGA-DEN
7/7Mon
multi-stopAmerican Airlines
7h 04mDEN-LGA
$363
6/21Sat
nonstopUnited Airlines
4h 18mEWR-DEN
6/28Sat
nonstopUnited Airlines
3h 53mDEN-EWR
$413
6/20Fri
multi-stopAllegiant Air
21h 28mIAD-DEN
6/22Sun
multi-stopAllegiant Air
22h 14mDEN-IAD
$530
6/20Fri
multi-stopAllegiant Air
21h 28mIAD-DEN
6/22Sun
multi-stopAllegiant Air
22h 14mDEN-IAD
$587

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Everything you need to know for your flight to Colorado

Cabin class types available on flights to Pennsylvania

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

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