$83 Find Cheap Flights from Philadelphia to Estes Park

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 Estes Park departing on 11/15. 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
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights from Philadelphia to Estes Park

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

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

Free to useThere are no hidden charges or fees.

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

Flight Deals
Useful Info
Flight Deals

Cheap Flights from Philadelphia to Estes Park (PHL-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Estes Park 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Estes Park

Mon, Oct 27 - Tue, Oct 28
Frontier Logo
5:48 pm - 12:51 amPHL-DEN
9h 03m1 stop
Frontier Logo
12:59 am - 5:40 pmDEN-PHL
14h 41m2 stops
$158Frontier
Find Deal
Wed, Nov 12 - Sat, Nov 15
United Airlines Logo
8:08 am - 10:29 amPHL-DEN
4h 21mnonstop
United Airlines Logo
5:37 pm - 11:09 pmDEN-PHL
3h 32mnonstop
$159United Airlines
Find Deal
Tue, Oct 28 - Mon, Nov 10
Frontier Logo
9:30 pm - 9:03 amPHL-DEN
13h 33m1 stop
Frontier Logo
6:25 am - 9:09 pmDEN-PHL
12h 44m1 stop
$160Frontier
Find Deal
Fri, Nov 7 - Tue, Nov 11
Frontier Logo
6:19 am - 8:35 amPHL-DEN
4h 16mnonstop
Frontier Logo
11:26 am - 12:21 amDEN-PHL
10h 55m1 stop
$161Frontier
Find Deal
Sat, Oct 25 - Thu, Oct 30
Frontier Logo
6:42 am - 8:58 amPHL-DEN
4h 16mnonstop
Frontier Logo
11:15 pm - 4:49 amDEN-PHL
3h 34mnonstop
$162Frontier
Find Deal
Sat, Oct 25 - Wed, Oct 29
Frontier Logo
11:00 am - 8:43 amPHL-DEN
23h 43m1 stop
Frontier Logo
8:41 pm - 11:39 amDEN-PHL
12h 58m1 stop
$164Frontier
Find Deal
Tue, Nov 11 - Sat, Nov 15
Frontier Logo
1:18 pm - 8:37 amPHL-DEN
21h 19m2 stops
Frontier Logo
7:59 pm - 8:23 amDEN-PHL
10h 24m1 stop
$165Frontier
Find Deal
Wed, Nov 5 - Sat, Nov 8
United Airlines Logo
9:45 am - 12:07 pmPHL-DEN
4h 22mnonstop
United Airlines Logo
5:37 pm - 11:09 pmDEN-PHL
3h 32mnonstop
$179United Airlines
Find Deal
Wed, Dec 3 - Wed, Dec 10
American Airlines Logo
8:45 pm - 11:05 pmPHL-DEN
4h 20mnonstop
American Airlines Logo
7:00 am - 12:38 pmDEN-PHL
3h 38mnonstop
$194American Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 8
American Airlines Logo
10:29 am - 12:45 pmPHL-DEN
4h 16mnonstop
American Airlines Logo
7:00 am - 12:34 pmDEN-PHL
3h 34mnonstop
$204American Airlines
Find Deal

Everything you should know

Cheapest round-trip
$158
Overall average: $299
Frontier
Mon 10/27Tue 10/28
PHL - DEN • 1 stop
Cheapest non-stop
$159
Typical prices: $217-$437
United Airlines
Wed 11/12Sat 11/15
PHL - DEN • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Estes Park!
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$83
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Philadelphia to Denver

When to book flights from Philadelphia to Estes Park

Are your dates flexible? Find out the best times to travel from Philadelphia to Estes Park based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

FAQs for booking flights from Philadelphia to Estes Park

  • Which airports will I be using when flying from Philadelphia to Estes Park?

    When flying out of Philadelphia you’ll be using Philadelphia. Estes Park does not have its own airport so you’ll be flying into nearby Denver Intl airport, which is 57.3 mi away.

  • How long does a flight from Philadelphia to Estes Park take?

    Direct flights cover the 1,553 miles separating Philadelphia and Estes Park in about 4h 16m.

  • How many flights are there between Philadelphia and Estes Park?

    21 direct flights run between Philadelphia and Estes Park on a daily basis. On average, there are about 148 departures each week.

  • What’s the cheapest day of the week to fly between Philadelphia and Estes Park?

    Consider leaving on a Monday and avoid Fridays if you are looking for the best rates. For your return to Philadelphia, you’ll find the best rates on Thursdays and the most expensive ones on Sundays.

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

    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 Estes Park.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Estes Park 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 Estes Park?

    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 Estes Park 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 Estes Park?

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

  • Which airlines provide the cheapest flights from Philadelphia to Estes Park?

    In the last 72 hours, the cheapest one-way ticket between Philadelphia and Estes Park found on KAYAK was with Frontier for $83. Frontier offered a round-trip connection from $158 and United Airlines from $159.

Top tips for finding cheap flights from Philadelphia to Estes Park

  • There is no airport in Estes Park. Instead, you’ll be flying into Denver Airport when flying between Philadelphia and Estes Park.
  • The cheapest flight from Philadelphia to Estes Park was found 40 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is August.

Reviews of the top 5 airlines serving Philadelphia to Estes Park

 
Need help choosing which airline to fly with from Philadelphia to Estes Park? 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 4238 reviews
7.0Food
8.1Boarding
8.0Comfort
8.6Crew
7.5Entertainment
Airline reviews

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

4.0 OkayAnnette, Oct 2025LGA - MCI
Read more Southwest reviews

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

mandatory demand customer to check their carry on because not enough people check bags.

Connecting flight is on time and boarding was a breeze!

Excellent. Would encourage Southwest to keep current boarding procedures with free style seating. Makes for a fantastic experience

As always, the entire Southwest experience was perfect. Purchasing the tickets on the Southwest web site was effortless, departure and arrival gates were spotless and comfortable, plane was clean and comfortable, crew was excellent and flight was on time. Wheelchair service in Las Vegas at departure was somewhat chaotic and disjointed, but I am not sure if that was Southwest problem, airport problem or combination.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

The Southwest employees (all two of them) were very nice and cheerful despite the fact the line to self-check a bag (simply drop it off) was hundreds of people long. Thank God I arrived early to the airport because I stood in this line for at least an hour. Once on the flight that had been delayed by an hour, we had no Wi-Fi and thus no entertainment. Finally, I hope the investor strong arm tactics against Southwest pay off in a short-term windfall to your C-Suite because the rest of you are screwed. I have been a faithful Southwest customer for 15 years due to everything you just got rid of. I'm flying to Idaho and Washington in October, both places I used to simply book with Southwest without a second thought now with Frontier (Washington) and United (Idaho) because they offer everything the "new" Southwest does but cheaper and at better times, destinations, etc. This really makes me sad...

For my birthday trip this was my second time ever flying, this trip was the best.

Flights delayed by 4-6 hours. Boarding was a mess and unclear. Bags were not at arrival airport and had never even been put on the plane. No idea when I’ll get them. Don’t fly into Denver!

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.

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

The boarding process needs to be refined. Sometimes the gate crew call out the boarding zone, and then flip to the monitor to show which zones are boarding. So unless everyone is gathered around to see the monitor there is usually confusion as wi which zones are boarding.

On time flight. Seat comfort could be better in the Comfort section.

My issue was with TSA agents for delta airlines. My luggage got flagged. The agent was going thru another persons first. He took 20 min to go thru hers. I asked them to bring mine closer so I could sit down . They said you can go sit it will be fine. I said I am supposed to keep my eyes on my bags at all times. The agent was meticulously unwrapping 2 gifts that the lady had and then tried to re warp it. He was trying to be kind i get it but 20 min for me to stand watching him do that was ridiculous. It was 6 am and there were a ton of travelers. Mine was flagged for some air packed tea that I bought in Turkey. My previous delta flight and 2 others before didn’t flag it. Consistency would be nice. Also on the flight the window shades were down for take off and landing - I thought that was very odd I thought they had to remain open for take off and landing.

The flight was an hour and a half late departing which was inconvenient

Delay in SLC jammed us up in Chicago. Got caught up in rush hour traffic

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

The flight was great. The gate location was way to far away!!!

The flight attendant in first class was beyond rude and didn't care at all about her job. AND the gate agent was even worse than the flight attendant for rudeness. She was awful.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

Terrible. They wouldn't allow me on my flight on the 14th..

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

The Phildalphia to Allentown portion was a BUS, not a plane. All was as expected.

Excellent - explanations were clear staff was nice and flight was comfortable

Flight was delayed not sure why no explanation given and no apologies either. Otherwise the flight was fine

Did not get the seat I selected and paid for.

Plane was delayed for 6 hours, at first by weather, which is understandable, but was further delayed with NO given reason for 2 1/2 hours more. We had no clue when we were going to depart actually until they opened the ramp. VERY POOR to ZERO COMMUNICATION!!!

Flight was delayed and after being in the airport for like seven hours, it was canceled.

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

We started with trouble checking in 24 hours early. Then my husband did not get his TSA precheck. Finally flight delayed due to no crew. I know things happen

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

The experience was good. No frills but I got there safe and sound and on time.

sluggish boarding and arrival procedures, fake nice flight attendants, and lots of delays.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

First of all, we never got on the connecting flight to Denver. They delayed our flight for two hours. If we would have gotten on that flight, we would have been stuck in Denver for 13 hours. So we re- routed our flight for a straight through flight to Oklahoma two days later. THEN, they delayed that flight for two hours. After that we were able to finally get on our flight and come home. Frontier Airlines - one of the worst airlines I have ever been on.

Terrible communication with weather delay, lost baggage, near impossible to reach customer service

My tickets got canceled on me by your site and I didn't have a flight. Then you kept sending me emails on the status of q flight I didn't have tickets for.

Flight was late. Missed connecting in Denver. My new flight is more than 24 hours later and I have no room, vouchers, or compensation, and might also be bumped from the one tomorrow.

Everything you need to know for your flight from Philadelphia to Estes Park

Complete your trip to Estes Park with a hotel stay or car rental

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.