Cheap Flights from Denver International to Philadelphia

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Flight deals from Denver International to Philadelphia

Looking for a cheap last-minute deal or the best return flight from Denver International to Philadelphia? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Denver International to Philadelphia

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver International to Philadelphia flights are currently cheapest in April.

Direct flights from Denver International to Philadelphia

Denver to Philadelphia: Flight information

The things to know before you go.
Cheapest flight foundج.م.‏ 1,627
Cheapest month to flyApril
Average flight time3 hrs, 37 mins
Most popular airlineAmerican Airlines
Average flights per week132

Finding cheap flights from Denver International to Philadelphia: Frequently asked questions

There are 6 airports in Philadelphia: Philadelphia International, Blue Bell, Philadelphia Trenton-Mercer, Greater Wilmington, Atlantic City International, and Allentown.
The best price we found for a return flight from Denver International to Philadelphia is ج.م.‏ 3,255. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 37 minutes is the average flight time from Denver International to Philadelphia.
American Airlines, Southwest Airlines and United fly direct from Denver International to Philadelphia.
As of February 2026, there are 266 flights per week flying from Denver International to Philadelphia.
The cheapest month to fly from Denver International to Philadelphia is usually April.
If you're flying from Denver International Airport, the cheapest airport near Philadelphia is Philadelphia International – which is 11.2 km away from the centre of Philadelphia. We've found flights into this airport from ج.م.‏ 3,255.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Denver International Airport to Philadelphia on Monday, 13 April 2026.
Yes – the average flight time is 3 hours and 37 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Philadelphia but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Philadelphia is around 40 days in advance, so don’t leave your flight to the last minute.
In February, the average temperature is usually around 0°C. July is typically the warmest month in Philadelphia, when it usually averages around 30°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -5°C. The rainiest month is July.
Currently, Frontier Airlines offers the cheapest flight tickets to Philadelphia.

Travelling from Denver International Airport (DEN) to Philadelphia: what you need to know

  • Hop on a direct flight from Denver International Airport to Philadelphia and you'll be in the air for an average of 4 hours 10 minutes.

  • The timezone in Philadelphia is UTC-4. The city is two hours ahead of Denver, where Denver International Airport is located.

  • The most popular route is from Denver International Airport (DEN) to Philadelphia International Airport (PHL). Choose from 50 weekly services between these two airports. If you want to take off as soon as possible, the earliest flight from DEN to PHL is the 00:20 American Airlines service. If you prefer to leave later in the day, the final departure is at 23:59 with Frontier Airlines.

  • For stress-free travel, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This will give you enough time to catch your DEN to Philadelphia flight.

  • If you're travelling during a major holiday or another peak period, give yourself extra time. A good general rule is two hours before domestic flights and up to four hours before international departures. Check-in and security lines will be longer.

  • You can book a direct Denver International Airport to Philadelphia ticket. Begin your journey at DEN and land at Philadelphia International Airport (PHL).

  • Well-known carriers that operate direct flights from Denver International Airport to Philadelphia include:

  • Located around 31 kilometres from the centre of Denver, DEN can be reached in about 35 minutes by car, depending on traffic. Travelling on public transport will take roughly 1 hour 30 minutes.

  • Get your flight from Denver International Airport to Philadelphia off to a stress-free start. Just a quick drive from DEN, book a night at The Westin Denver International Airport and you'll be well-rested for the journey ahead.

  • 80.23% of flights leaving Denver International Airport arrive at their destination on time. Given its strong on-time stats, you're unlikely to face delays when flying out of DEN.

  • You'll find DEN at 8500 Pena Boulevard.

How to find the cheapest flights from Denver International Airport (DEN) to Philadelphia

  • ج.م.‏ 1,627 is currently the lowest price for a one-way Denver International Airport to Philadelphia flight. Return flight tickets start at ج.م.‏ 3,255. These prices can change depending on availability.

  • Book one month before you want to fly. Pricing trends show that this is the ideal window for finding cheap flights from DEN to Philadelphia.

  • The best month for landing cheap Denver International Airport to Philadelphia tickets is May. Use the 'Whole month' tool to compare flight prices, then choose the dates offering the lowest fares.

  • Picking up a cheap flight from DEN to Philadelphia is a breeze with Price Alerts. Simply set up one of these automatic notifications and we'll notify you as soon as a deal gets even better.

  • Tailor your flights with filters. Select your departure and arrival times, total journey duration and airlines. You can also sort the results by 'Cheapest,' 'Best' or 'Fastest' flights from Denver International Airport to Philadelphia.

Airports in Philadelphia

Philadelphia International Airport (PHL)

  • Philadelphia International Airport (PHL) to central Philadelphia takes around 15 minutes to reach by car. The centre is roughly 19 kilometres away.

  • Travelling to the centre by public transport will take you around 45 minutes.

  • If you're coming in on a late flight from Denver International Airport to Philadelphia, few things beat the convenience of staying close to the terminal. Pick up your bags from the carousel and then be showered and snoozing not long after at one of these accommodation options near PHL:

  • Go where the road takes you with a Philadelphia International Airport rental car. Pick up a set of wheels from Dollar, Thrifty or Budget and experience more of Philadelphia and beyond.

  • For the best deal, book your vehicle from Philadelphia International Airport around three weeks ahead of your flight from DEN to Philadelphia.

  • PHL is located at 8500 Essington Ave.

Trenton-Mercer Airport (TTN)

  • The centre of Philadelphia is about 56 kilometres from Trenton-Mercer Airport (TTN). After your flight from Denver International Airport to Philadelphia has hit the runway and you've made your way to arrivals, the drive should take about 40 minutes.

  • If you travel by public transport, you'll get to the city centre in 1 hour 45 minutes or so.

  • There are some comfortable places ready to welcome you near TTN. Unwind and get cosy after your DEN to Philadelphia flight at one of these well-located options:

  • Forget about public transport schedules or long cab lines. Pick up a Trenton-Mercer Airport rental car and let your trip unfold on your terms. Compare offers from Budget, National and Enterprise.

  • Call dibs on the best options. Booking your ride from TTN four weeks ahead of time often means better prices and a wider selection of vehicles.

  • The address for Trenton-Mercer Airport is Scotch Road, Terminal Building.

Best time to go to Philadelphia

  • Travel to Philadelphia during the high season if you want a lively atmosphere, but remember that prices are generally higher. Alternatively, book your flights from Denver International Airport to Philadelphia during low season when prices are cheaper and it's quieter.

  • Lock in a Denver International Airport to Philadelphia flight ticket with a departure in July to experience the city during its warmest month. You can expect temperatures to range from 18ºC to 32ºC.

  • January has average temperatures of between -7ºC and 9ºC. Look for a cheap ticket from DEN to Philadelphia around that time if you want to travel when it's cooler.

More about Philadelphia

Explore more of United States

  • Philadelphia has its own special appeal, but there are so many other corners of United States just waiting to be explored. Around 129 kilometres north-east of Philadelphia, a visit to New York will fill your itinerary to the brim. Don't miss top attractions like Statue of Liberty, Central Park and Empire State Building.

  • If there's time to check out another well-known destination in United States, head for Boston, roughly 434 kilometres north-east of Philadelphia. Freedom Trail, Museum of Fine Arts Boston and Boston Tea Party Ships & Museum are highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.