Question 1

How much does a flight from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) cost?

Accepted Answer

You can find cheap one-way flights from $28 and cheap return flights from $56 Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) with Expedia. One-way flights usually range from $131 to $884, and return flights typically cost between $302 and $1741. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) ticket fares go up or down.

*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.

Question 2

What is the cheapest month to fly from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?

Accepted Answer

The cheapest month to fly from DEN to PHL is May when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.

Question 3

Which airlines fly direct from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?

Accepted Answer

Choose from 3 airlines operating direct flights from DEN to PHL:

United operates around 27 direct flights from DEN to PHL every week
American Airlines operates around 24 direct flights from DEN to PHL every week
Frontier Airlines operates around 7 direct flights from DEN to PHL every week

Question 4

What is the cheapest airline that flies from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?

Accepted Answer

United is one of the cheapest airlines offering nonstop flights from Denver, CO (DEN) to Philadelphia, PA (PHL), with round-trip tickets starting from around $236. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.

*Prices based on flights available on Expedia in the last year.

Question 5

How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?

Accepted Answer

To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

Question 6

What is the best airline to fly with from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?

Accepted Answer

The best airline to fly with from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) will differ from traveler to traveler. If you like to fly early, WN offers early morning flights. If price is the most important factor, Frontier Airlines typically offers the lowest fares. American Airlines offers the most daily flights from DEN to PHL, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.

Question 7

What is the best time to fly from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?

Accepted Answer

The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.

Question 8

How many flights per day from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?

Accepted Answer

On average, there are around 10 nonstop flights per day from Denver Intl. (DEN) to Philadelphia Intl. (PHL). For more options, look at flights that include layovers.

Question 9

What is the earliest flight from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?

Accepted Answer

Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from DEN to PHL. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.

Question 10

What are the most popular departure times for flights from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?

Accepted Answer

The most popular departure times for flights from Denver (DEN) to Philadelphia (PHL) are in the early morning, from 6am to 9am. About 27% of passengers prefer this time window. Many major carriers, including American Airlines and Delta Air Lines, offer flights during this window. This timing is popular because it allows you to maximize your time in Philadelphia upon arrival.

Question 11

How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?

Accepted Answer

Flying nonstop from DEN to PHL takes around 3 hours 30 minutes, with the route covering approximately 1,554 miles. Flights with a layover typically take 4 hours 20 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.

Question 12

Can you fly business or first class from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?

Accepted Answer

First class is available on flights from DEN to PHL. First class cabins are available on:

Delta Air Lines
American Airlines
United Airlines

Question 13

How much is a business class flight from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?

Accepted Answer

A direct, return business class ticket from Denver (DEN) to Philadelphia (PHL) typically costs between $1,308 - $1,960. A non-stop, one-way business class flight is usually around $699 - $908 per adult. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) if you opt for a connecting flight.

*Prices based on flights available on Expedia in the last year.

Question 14

How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) flight with Expedia?

Accepted Answer

It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

Question 15

What airports do you fly into for Philadelphia from Denver Intl. (DEN)?

Accepted Answer

From Denver Intl. (DEN), you can fly into Philadelphia Intl. (PHL) to reach Philadelphia. Some flights may connect through major hubs like Portland Intl. (PDX), San Diego Intl. (SAN), Eppley Field (OMA) before reaching Philadelphia. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Question 16

Is it cheaper to buy a plane ticket from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) at the last minute?

Accepted Answer

Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Question 17

Is it cheaper to book a Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) flight and hotel package?

Accepted Answer

Securing a Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) Philadelphia Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

Question 18

Can I cancel or change the date of my flight from Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?

Accepted Answer

If you booked your Denver, CO (DEN-Denver Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Origin airport	Denver Intl.
Destination airport	Philadelphia Intl.
Airlines serving	Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United
Roundtrip price	$56
Distance	1553 mi
Average flight time	6 hours 3 mins

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$28 Cheap Flights from Denver (DEN) to Philadelphia (PHL)