Question 1

How far in advance should I book a flight to Denver?

Accepted Answer

You are more likely to see cheaper flights to Denver from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $318 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Philadelphia for as low as $258 on momondo.

Question 2

What airlines fly to Denver?

Accepted Answer

United Airlines, Frontier and American Airlines are the top three most popular airlines that fly to Denver from Philadelphia according to our data. United Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 7 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

Question 3

What is the cheapest time of day to depart on your flight to Denver?

Accepted Answer

The cheapest time of day to fly to Denver is at noon when flights can be purchased for as low as $277. Flights in the afternoon are often more expensive with an average ticket price of $419.

Question 4

Which airport is the most popular layover for flights between Philadelphia and Denver?

Accepted Answer

St. Louis (STL) was the most common stop: 56% of momondo users choosing 1-stop flights on this route connected there.

Question 5

How often are flights from Philadelphia to Denver delayed?

Accepted Answer

Historically, on average around 18% of flights between Philadelphia and Denver have experienced a delay on any given week. The average delay length over the past 12 months has been 159 minutes.

Question 6

What is the cheapest Philadelphia to Denver Intl flight route?

Accepted Answer

Fly from Philadelphia to Denver Intl for the best Philadelphia - Denver Intl flight prices

Question 7

How many flights depart from Philadelphia to Denver on average per day?

Accepted Answer

As of February 2026, 7 flights take off from Philadelphia and land in Denver each day. The most common flight departure time for this route is 6:00PM, with 37% of daily flights taking off in the evening.

Question 8

How many flights depart from Philadelphia to Denver on average per week?

Accepted Answer

The number of flights available between Philadelphia and Denver is 53 per week as of February 2026. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.

Question 9

Which layover airport has the shortest connection time from Philadelphia to Denver?

Accepted Answer

St. Louis (STL) has the shortest average layover time for this route: 2h 35m.

Question 10

What is the cheapest month to fly to Denver?

Accepted Answer

The cheapest month to fly to Denver from Philadelphia is in July. Flight prices, which tend to average around $279, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in July, then you should wait until August to fly from Philadelphia, when ticket prices are also cheap, with an average price of $281.

Question 11

What is the cheapest airline that flies from Philadelphia to Denver Intl?

Accepted Answer

Southwest, Frontier, and United Airlines are the most popular carriers operating from Philadelphia to Denver Intl

Question 12

Which layover airport has the shortest travel time from Philadelphia to Denver?

Accepted Answer

Flights connecting via St. Louis (STL) have the shortest average one-way travel time: 7h 15m.

Question 13

Which airline has the best punctuality record on Philadelphia to Denver flights?

Accepted Answer

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 10% of their flights experiencing any sort of delay.

Question 14

What is the cheapest day to depart on your flight to Denver?

Accepted Answer

The cheapest day to depart on your flight to Denver is on a Friday when prices can be found for as low as $336. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $403.

Question 15

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

Question 16

Can stopping save me money on Philadelphia to Denver flights?

Accepted Answer

No. A direct flight is the cheapest option for a flight between Philadelphia to Denver.

Question 17

What is the most punctual flight time for Philadelphia to Denver flights?

Accepted Answer

Generally, flights departing at night tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Question 18

How have Philadelphia to Denver flight prices changed over time?

Accepted Answer

As of February 2026, prices for Philadelphia to Denver flights are approximately 7% cheaper when compared to flights at the same time last year.

Question 19

What cabin class options are available on Philadelphia to Denver Intl flights?

Accepted Answer

There are 4 cabin classes available to choose from on Philadelphia to Denver Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Question 20

Which layover airport offers the lowest fares from Philadelphia to Denver?

Accepted Answer

Flights via Chicago (ORD) offer the lowest average round-trip price of $170.

Question 21

What are the benefits of the different airports in Philadelphia and Denver?

Accepted Answer

Both Philadelphia International Airport and Denver International Airport are the only airports available for those making trips from Philadelphia to Denver. Philadelphia International Airport offers a number of different parking options for both long and short-term parking. The airport also has seven different charging stations that are capable of charging up to 14 electric vehicles at any time. The airport offers programs designed to help passengers with limited mobility, such as their AIRA service to help connect low vision and blind passengers to remote agents. They also offer the Sorenson BuzzCard app that enhances communication at the airport by allowing passengers to type a message and show it to the person with whom they are communicating. Denver International Airport also offers plenty of different parking options for short and long-term stays, plus they offer 27 different spaces located very close to the terminal building specifically for hybrid vehicles. If you are traveling with children through the Denver International Airport, they offer a children's play area that is on the mezzanine level of Concourse B.

Question 22

Which airlines fly direct from Philadelphia to Denver?

Accepted Answer

When searching for flights from Philadelphia to Denver, you'll be happy to learn that there are several airlines that offer nonstop flights between these two cities. Frontier Airlines, United Airlines, American Airlines, and Southwest Airlines all offer nonstop service between Philadelphia International Airport (PHL) and Denver International Airport (DEN), and these are all great examples of airlines offering cheap flights from Philadelphia to Denver. Spirit Airlines also offers a one-stop flight that has a layover at Fort Lauderdale (FLL), Frontier Airlines has a one-stop flight that has a layover at Orlando (MCO), and United Airlines offers a one-stop flight with a layover at Houston George Bush Intercontinental (IAH). You can also get Philadelphia to Denver flights via American Airlines that have a layover at either Charlotte Douglas (CLT) or Orlando.

Question 23

What is the best way to get in and out of airports in Philadelphia and Denver?

Accepted Answer

When you are traveling from Philadelphia to Denver, one of the most convenient ways to get to the Philadelphia International Airport from downtown Philadelphia is aboard the SEPTA light rail Airport Line train. Another convenient option is to travel on the SEPTA Line 37 bus that will take you from downtown Philadelphia to the Philadelphia International Airport. There are also plenty of taxis in downtown Philadelphia to make the trip to the airport. Once you arrive at Denver International Airport the Regional Transportation District light rail Train A can take you from the airport to downtown Denver. Another option is to take the local airport bus from Denver Airport Station Gate Number 9 to the Nine Mile Station Gate H and then take either route 83L to 83D to downtown Denver. If you prefer to travel by car, there are plenty of taxi and rideshare car options available at the airport to conveniently take you into Denver.

Which cities can you get to from Denver International Airport?

One of the best things about traveling on one-way flights from Philadelphia to Denver is the location of Denver International Airport and how convenient it is for a number of other cities in Colorado. These include suburbs around the city of Denver such as Aurora, Littleton, and Lakewood. This is also a great airport to use if you are traveling to smaller Colorado towns such as Boulder, Loveland, Fort Collins, Colorado Springs, or Pueblo. This even makes a good airport choice if you want to go to the cities of Cheyenne and Laramie in Wyoming.

Question 24

When did momondo last update prices for flights from Philadelphia Airport to Denver Intl Airport?

Accepted Answer

Prices for flights from Philadelphia Airport to Denver Intl Airport refresh daily.

Question 25

How many operators does momondo search for flights from Philadelphia Airport to Denver Intl Airport?

Accepted Answer

There are 7 operators available for flights from Philadelphia Airport to Denver Intl Airport as of February 2026.

Question 26

How old do you have to be to fly from Philadelphia Airport to Denver Intl Airport?

Accepted Answer

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Philadelphia Airport to Denver Intl Airport.

Question 27

What documentation or ID do you need to fly to Denver Intl Airport?

Accepted Answer

The required travel and health documents for your Denver Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Denver Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best Price Found	$174
Fastest flight time	3h 50m
Direct flights	Every day
Airports in Denver	1 airport

Airline	Rating	Free Cancellation	Price
Allegiant Air	PriceFrom $106	Free Cancellation	Rating 7.2 709 reviews	Search Allegiant Air flights
Frontier	PriceFrom $110	Free Cancellation	Rating 5.7 3,052 reviews	Search Frontier flights
Delta	PriceFrom $128	Free Cancellation	Rating 7.9 8,138 reviews	Search Delta flights
United Airlines	PriceFrom $188	Free Cancellation	Rating 7.4 9,232 reviews	Search United Airlines flights
Southwest	PriceFrom $198	Free Cancellation	Rating 8.0 4,272 reviews	Search Southwest flights
American Airlines	PriceFrom $206	Free Cancellation	Rating 7.2 11,215 reviews	Search American Airlines flights
JetBlue	PriceFrom $208	Free Cancellation	Rating 7.2 2,893 reviews	Search JetBlue flights

Cheap flights from Philadelphia to Denver from $92

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