$97 Cheap United flights Denver (DEN) to Philadelphia (PHL)

Use the “Price (lowest to highest)” filter on Expedia to search for cheap United Airlines return flights from $193 from DEN to PHL. Affordable one-way tickets from $97 are available as well.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Look for one-way or round-trip flights to Philadelphia in January or February. You could find a cheap fare with United Airlines during these off-peak travel months.

Search for cheap United Airlines flights from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL) one to three months prior to your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare type and journey, the ideal day to book a domestic flight is generally Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Easily travel from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL) on one of United Airlines’s 14 weekly direct flights. Apply Expedia’s “Nonstop” and “Airline” filters to find the United Airlines flight that’ll take you to PHL at your preferred time.

Depart Denver Intl. Airport (DEN) for Philadelphia Intl. Airport (PHL) on a direct United Airlines flight, and you’ll be in the sky for around 3h 34m.

Sunday has the most United Airlines flights from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL). With 2 daily departures, this is the best day of the week to find something that will work for your schedule.

The first United Airlines flight from DEN to PHL departs at 10:10AM UTC-7, touching down at 3:44PM UTC-5. If you’d like to set off later in the day, the last United Airlines flight leaves DEN at 5:50PM UTC-7 and touches down at PHL at 11:24PM UTC-5. Flying before midday is often a smart option as morning flights tend to experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Philadelphia Intl. Airport (PHL) is the main Philadelphia gateway for United Airlines flights from Denver Intl. Airport (DEN).

A rewarding loyalty program and the opportunity to collect points through United Mileage Plus are the start of the reasons to leave from DEN to PHL with United Airlines. Plus, when you sign up to Expedia’s free One Key™ program, you can earn OneKeyCash™* on top of any airline loyalty program earnings. It’s yours to spend on future travel plans.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Jet off on a United Airlines flight from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL), and you’ll probably be on a Boeing 737-900. Bear in mind though, that the aircraft type can change due to operational needs.

Depending on the type of ticket you purchased, a fee generally applies if you cancel or change your flight more than 24 hours after it has been confirmed. To find plane tickets with more flexibility, select our “Changes included” and “No cancel fee” boxes when you look for flights. For more information on canceling or changing your reservation, visit “Trips,” select your flight and click on “Manage Booking.”