£96 Cheap Flights from Philadelphia (PHL) to Denver (DEN)

View £96 flight on Thu, 28 May 2026Opens in a new window

Popular airlines from Philadelphia International Airport (PHL) to Denver International Airport (DEN)

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

Prices were available within the past 7 days and start at £96 for one-way flights and £324 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sun, 17 May - Thu, 21 May
PHL
Philadelphia
DEN
Denver
£324 Return, found 1 day ago
£324
Return
found 1 day ago
Select Delta flight, departing Sun, 17 May from Philadelphia to Denver, returning Thu, 21 May, priced at £324 found 1 day ago
JetBlue Airways
Sat, 16 May - Wed, 20 May
PHL
Philadelphia
DEN
Denver
£407 Return, found 9 hours ago
£407
Return
found 9 hours ago
Select JetBlue Airways flight, departing Sat, 16 May from Philadelphia to Denver, returning Wed, 20 May, priced at £407 found 9 hours ago
Alaska Airlines
Thu, 27 Aug - Fri, 28 Aug
PHL
Philadelphia
DEN
Denver
£500 Return, found 1 day ago
£500
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 27 Aug from Philadelphia to Denver, returning Fri, 28 Aug, priced at £500 found 1 day ago
JetBlue Airways
Sat, 16 May - Wed, 20 May
PHL
Philadelphia
DEN
Denver
£530 Return, found 9 hours ago
£530
Return
found 9 hours ago
Select JetBlue Airways flight, departing Sat, 16 May from Philadelphia to Denver, returning Wed, 20 May, priced at £530 found 9 hours ago
Alaska Airlines
Wed, 10 Jun - Sun, 14 Jun
PHL
Philadelphia
DEN
Denver
£561 Return, found 11 hours ago
£561
Return
found 11 hours ago
Select Alaska Airlines flight, departing Wed, 10 Jun from Philadelphia to Denver, returning Sun, 14 Jun, priced at £561 found 11 hours ago
JetBlue Airways
Wed, 10 Jun - Sun, 14 Jun
PHL
Philadelphia
DEN
Denver
£564 Return, found 11 hours ago
£564
Return
found 11 hours ago
Select JetBlue Airways flight, departing Wed, 10 Jun from Philadelphia to Denver, returning Sun, 14 Jun, priced at £564 found 11 hours ago
Alaska Airlines
Sat, 16 May - Wed, 20 May
PHL
Philadelphia
DEN
Denver
£573 Return, found 9 hours ago
£573
Return
found 9 hours ago
Select Alaska Airlines flight, departing Sat, 16 May from Philadelphia to Denver, returning Wed, 20 May, priced at £573 found 9 hours ago
Alaska Airlines
Wed, 10 Jun - Sun, 14 Jun
PHL
Philadelphia
DEN
Denver
£576 Return, found 11 hours ago
£576
Return
found 11 hours ago
Select Alaska Airlines flight, departing Wed, 10 Jun from Philadelphia to Denver, returning Sun, 14 Jun, priced at £576 found 11 hours ago
JetBlue Airways
Sat, 16 May - Wed, 20 May
PHL
Philadelphia
DEN
Denver
£579 Return, found 9 hours ago
£579
Return
found 9 hours ago
Select JetBlue Airways flight, departing Sat, 16 May from Philadelphia to Denver, returning Wed, 20 May, priced at £579 found 9 hours ago
Alaska Airlines
Mon, 3 Aug - Sun, 9 Aug
PHL
Philadelphia
DEN
Denver
£589 Return, found 6 hours ago
£589
Return
found 6 hours ago
Select Alaska Airlines flight, departing Mon, 3 Aug from Philadelphia to Denver, returning Sun, 9 Aug, priced at £589 found 6 hours ago

Alternative airports near Denver

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

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city centre is 32 minutes. Flights from £688
DEN
Denver Intl.
Cheapest
Average driving time to city centre32 min
Flights from £688

Frequently asked questions

How much does a flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.) cost?
One-way flights typically cost between £394 and £869 and return flights often range between £592 and £1,225. 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 Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
What is the cheapest month to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
September is typically the cheapest month to fly from Philadelphia International Airport (PHL) to Denver International Airport (DEN), with average return fares of approximately £415. This is about 13% lower than the average price throughout the year. September often sees lower prices as the summer travel rush ends and before the holiday season begins, leading to reduced demand. Other cheap months to fly from Philadelphia International Airport (PHL) to Denver International Airport (DEN) include January and February.
Which airlines fly direct from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
Enter PHL to DEN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
To find a cheap flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver 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.
What is the best airline to fly with from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
The best airline to fly with from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.) will differ from traveller to traveller. If you like to fly early, F9 offers early morning flights. If price is the most important factor, F9 typically offers the lowest fares. WN offers the most daily flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.), which is brilliant 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.
What is the best time to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
The best time to fly from Philadelphia International Airport (PHL) to Denver International Airport (DEN) is September. This month offers a great balance, as it's both one of the cheapest and most popular times to travel. You can expect return flights to be around £415, and with September being popular, you'll find plenty of flight options to suit your schedule. This information is based on booking data from the past year.
How many flights per day from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
There are approximately 14 nonstop flights per day from Philadelphia International Airport (PHL) to Denver International Airport (DEN). For even more choice, look at flights that include layovers. You'll find around 96 connecting flights per day. Some common connection points include O'Hare International Airport (ORD), Midway International Airport (MDW), and Seattle - Tacoma International Airport (SEA).
What is the earliest flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
The earliest flight from Philadelphia International Airport (PHL) to Denver International Airport (DEN) typically departs at approximately 5:00 AM local time, operated by American Airlines. This is a seasonal service active in April and May. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
You'll typically find the most flights from Philadelphia Intl. (PHL) to Denver Intl. (DEN) on a Thursday, with around 94 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, Delta Air Lines, and Frontier Airlines. Thursdays offer notably more flight options compared to other days of the week.
What are the most popular departure times for flights from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
The most popular departure times for flights from Philadelphia International Airport (PHL) to Denver International Airport (DEN) are in the early morning, from 6am to 9am. About 29% of passengers prefer this time. Many major carriers, including Frontier Airlines, American Airlines and Delta Air Lines, offer flights during this window. This timing works well because it allows you to get an early start on your travel day and arrive in Denver with plenty of time to settle in.
How long does it take to fly from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
Direct flights from PHL to DEN usually take about 4 hours 20 minutes, traveling roughly 1,554 miles. If you opt for a connecting flight, expect to add around 2 hours 10 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
Select the "Business class" and "First class" filters when looking for PHL to DEN flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How much is a business class flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
A non-stop, one-way business class flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.) is usually around £714 - £938. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Anaa (AAA) (AAA) to Toronto, ON (YYZ-Pearson Intl.) (YYZ) if you opt for a connecting flight.
How do I earn miles on a Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.) flight with Expedia?
It's easy to earn miles on a Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver 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.
What airports do you fly into for Denver from Philadelphia Intl. (PHL)?
From Philadelphia Intl. (PHL), you can fly directly into Denver Intl. (DEN) to reach Denver. Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Midway Intl. (MDW), Nashville Intl. (BNA) before reaching Denver. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.) at the last minute?
Typically, booking a last minute flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver 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.
Is it cheaper to book a Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.) flight and hotel package?
Securing a Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.) flight and hotel package 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.
Can I cancel or change the date of my flight from Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver Intl.)?
If you booked your Philadelphia, PA (PHL-Philadelphia Intl.) to Denver, CO (DEN-Denver 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.

Travel information

Origin airport
Philadelphia Intl.
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, JetBlue Airways
Return price
£323
Distance
2485 km
Average flight time
2 hours 19 mins

Book with confidence

Compare flights from Philadelphia to Denver easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Philadelphia to Denver. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Denver Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Philadelphia Intl. to Denver Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Philadelphia Intl. (PHL) to Denver Intl. (DEN)

The easiest way to view the best deals on flights from Philadelphia to Denver today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Philadelphia Intl. to Denver Intl. start at just £324 and range up to £589.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Philadelphia and Denver
  • booking your flight during May, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Philadelphia to Denver flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Philadelphia Intl. to Denver Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Philadelphia to Denver easily and book with confidence

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