$64 Cheap Flights from Denver (DEN) to Philadelphia (PHL)

View $64 flight on Sun, Dec 14, 2025Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL)

Cheap Flights from Denver to Philadelphia (DEN-PHL)

Prices were available within the past 7 days and start at $64 for one-way flights and $97 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Fri, Feb 20 - Mon, Mar 2
DEN
Denver
PHL
Philadelphia
$97 Roundtrip, found 3 days ago
$97
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Fri, Feb 20 from Denver to Philadelphia, returning Mon, Mar 2, priced at $97 found 3 days ago
Frontier Airlines
Wed, Nov 19 - Sun, Dec 7
DEN
Denver
PHL
Philadelphia
$103 Roundtrip, found 6 days ago
$103
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Wed, Nov 19 from Denver to Philadelphia, returning Sun, Dec 7, priced at $103 found 6 days ago
Frontier Airlines
Fri, Feb 20 - Sun, Feb 22
DEN
Denver
PHL
Philadelphia
$118 Roundtrip, found 1 day ago
$118
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, Feb 20 from Denver to Philadelphia, returning Sun, Feb 22, priced at $118 found 1 day ago
Frontier Airlines
Fri, Nov 28 - Mon, Dec 8
DEN
Denver
PHL
Philadelphia
$123 Roundtrip, found 4 hours ago
$123
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Fri, Nov 28 from Denver to Philadelphia, returning Mon, Dec 8, priced at $123 found 4 hours ago
Frontier Airlines
Fri, Nov 28 - Mon, Dec 8
DEN
Denver
PHL
Philadelphia
$124 Roundtrip, found 4 hours ago
$124
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Fri, Nov 28 from Denver to Philadelphia, returning Mon, Dec 8, priced at $124 found 4 hours ago
Frontier Airlines
Wed, Dec 3 - Sun, Dec 7
DEN
Denver
PHL
Philadelphia
$126 Roundtrip, found 12 hours ago
$126
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Wed, Dec 3 from Denver to Philadelphia, returning Sun, Dec 7, priced at $126 found 12 hours ago
United
Tue, Dec 2 - Tue, Dec 9
DEN
Denver
PHL
Philadelphia
$159 Roundtrip, found 7 hours ago
$159
Roundtrip
found 7 hours ago
Select United flight, departing Tue, Dec 2 from Denver to Philadelphia, returning Tue, Dec 9, priced at $159 found 7 hours ago
Southwest Airlines
Sat, Jan 17 - Sun, Jan 18
DEN
Denver
PHL
Philadelphia
$159 Roundtrip, just found
$159
Roundtrip
just found
Select Southwest Airlines flight, departing Sat, Jan 17 from Denver to Philadelphia, returning Sun, Jan 18, priced at $159 just found
JetBlue Airways
Fri, Dec 5 - Sat, Dec 6
DEN
Denver
PHL
Philadelphia
$245 Roundtrip, just found
$245
Roundtrip
just found
Select JetBlue Airways flight, departing Fri, Dec 5 from Denver to Philadelphia, returning Sat, Dec 6, priced at $245 just found
Alaska Airlines
Fri, Dec 5 - Sun, Dec 7
DEN
Denver
PHL
Philadelphia
$365 Roundtrip, just found
$365
Roundtrip
just found
Select Alaska Airlines flight, departing Fri, Dec 5 from Denver to Philadelphia, returning Sun, Dec 7, priced at $365 just found

Find the cheapest month to fly from Denver (DEN) to Philadelphia (PHL)

March is typically the cheapest month to fly

From $93 - $471 per traveler.

Alternative airports near Philadelphia

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Philadelphia Intl. PHL. Cheapest and Closest option available. Average driving time to city center is 17 minutes. Flights from $138
PHL
Philadelphia Intl.
CheapestClosest
Average driving time to city center17 min
Flights from $138

Frequently asked questions

How much does a flight from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL) cost?
Grab a cheap one-way flight from $64 or cheap return flight from $97 from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL)?
Planning your trip for February may help you find better deals, as it's the cheapest month for flights between DEN and PHL. You'll typically find the lowest prices during off-peak months.
Which airlines fly direct from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL)?
You can pick from 4 carriers that fly direct from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL). Including:

  • United Airlines
  • American Airlines
  • Southwest Airlines

What is the cheapest airline that flies from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL)?
Frontier Airlines and Southwest Airlines are some well-known airlines offering reasonable fares. Remember that flight prices from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL) can change depending on demand, travel dates and how early you book. With Expedia's search tool, you can easily find a DEN to PHL flight that fits your preferences and budget.
How many flights per day from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL)?
With, on average, 6 direct flights departing from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL) each day, you'll be soaring through the skies in no time.
What are the most popular departure times for flights from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL)?
More people fly between DEN and PHL at 5 PM than at any other time of day. Prefer a quieter experience? Consider flying outside peak hours and it's possible you'll save on your fare as well.
What day of the week has the most flights from DEN to PHL?
Depart on a Sunday if you're after the best choice of flights from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL).
What is the earliest flight from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL)?
Hop on the earliest flight at around 6:37AM UTC-7, departing from Denver Intl. Airport (DEN). You'll be traveling for around 3h 49m, arriving at Philadelphia Intl. Airport (PHL) at approximately 12:26PM UTC-5.
How long does it take to fly from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL)?
It takes approximately 3 hours and 35 minutes to travel the 1,550 mi from DEN to PHL.
What airline has the least delays from DEN to PHL?
American Airlines has the best performance for on-time direct flights from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL), with an on-time score of 84%. Use the Expedia App to see your flight status before you head off and get real-time alerts about any trip changes.
What is the best time to fly from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL)?
To reach Philadelphia Intl. Airport (PHL) on time, pick a flight that leaves Denver Intl. Airport (DEN) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Philadelphia from Denver Intl. Airport (DEN)?
Philadelphia Intl. Airport (PHL) is the only airport in Philadelphia with direct flights from Denver Intl. Airport (DEN). Browse the available options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL) last-minute?
Last-minute fares from DEN to PHL are typically more expensive. To lock in the lowest prices, start searching for flights as early as possible. That said, if you're flexible with your travel plans, it's possible to land a cheap fare right before you leave.
Is it cheaper to book a DEN to PHL flight and hotel package?
You'll typically save money by securing a DEN to PHL flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. Once you've chosen your ideal flights and accommodations, you can add extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to Philadelphia Intl. Airport (PHL)?
Typically, you can cancel or reschedule your DEN to PHL flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you need more details, go to our Customer Service portal.

Travel 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
$97
Distance
1553 mi
Average flight time
5 hours 39 mins

Book with confidence

Denver to Philadelphia Flights

The cheapest times to fly from Denver to Philadelphia

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to Philadelphia are during the month of February. You can find some of the cheapest flights from Denver to Philadelphia with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Philadelphia

Sunday is one of the best days to book for cheap flights from Denver to Philadelphia: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Denver to Philadelphia

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to Philadelphia in 2025. You can also book with separate airlines for your outbound and return journeys, from $64 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to Philadelphia flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to Philadelphia airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Denver to Philadelphia Flights

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*Available to One Key members.