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Cheap flights from Denver to Philadelphia

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Flight deals from Denver to Philadelphia

Looking for a cheap last-minute deal or the best return flight from Denver to Philadelphia? If you want to travel next month, return fares start from P3,357. Find the lowest prices on one-way and return tickets right here.
Philadelphia.P3,357 per passenger.Departing Wed, 15 Apr, returning Sat, 18 Apr.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Wed, 15 Apr, arriving in Philadelphia International.Inbound direct flight with Frontier Airlines departs from Philadelphia International on Sat, 18 Apr, arriving in Denver International.Price includes taxes and charges.From P3,357, select.
Philadelphia.P5,053 per passenger.Departing Tue, 21 Apr, returning Sat, 16 May.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Tue, 21 Apr, arriving in Philadelphia International.Inbound direct flight with Frontier Airlines departs from Philadelphia International on Sat, 16 May, arriving in Denver International.Price includes taxes and charges.From P5,053, select.
Philadelphia.P5,094 per passenger.Departing Sat, 2 May, returning Tue, 5 May.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Sat, 2 May, arriving in Philadelphia International.Inbound direct flight with Frontier Airlines departs from Philadelphia International on Tue, 5 May, arriving in Denver International.Price includes taxes and charges.From P5,094, select.
Philadelphia.P7,411 per passenger.Departing Tue, 31 Mar, returning Wed, 8 Apr.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Tue, 31 Mar, arriving in Philadelphia International.Inbound indirect flight with Frontier Airlines, departs from Philadelphia International on Wed, 8 Apr, arriving in Denver International.Price includes taxes and charges.From P7,411, select.
Philadelphia.P8,445 per passenger.Departing Tue, 24 Mar, returning Wed, 25 Mar.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Tue, 24 Mar, arriving in Philadelphia International.Inbound indirect flight with Frontier Airlines, departs from Philadelphia International on Wed, 25 Mar, arriving in Denver International.Price includes taxes and charges.From P8,445, select.
Philadelphia.P11,117 per passenger.Departing Thu, 19 Mar, returning Mon, 23 Mar.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Thu, 19 Mar, arriving in Philadelphia International.Inbound direct flight with Frontier Airlines departs from Philadelphia International on Mon, 23 Mar, arriving in Denver International.Price includes taxes and charges.From P11,117, select.
Philadelphia.P11,117 per passenger.Departing Sun, 31 May, returning Wed, 3 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Sun, 31 May, arriving in Philadelphia International.Inbound indirect flight with Frontier Airlines, departs from Philadelphia International on Wed, 3 Jun, arriving in Denver International.Price includes taxes and charges.From P11,117, select.
Philadelphia.P11,613 per passenger.Departing Sun, 15 Mar, returning Wed, 8 Apr.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Sun, 15 Mar, arriving in Philadelphia International.Inbound direct flight with Frontier Airlines departs from Philadelphia International on Wed, 8 Apr, arriving in Denver International.Price includes taxes and charges.From P11,613, select.
Philadelphia.P11,672 per passenger.Departing Fri, 5 Jun, returning Mon, 8 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Fri, 5 Jun, arriving in Philadelphia International.Inbound indirect flight with Frontier Airlines, departs from Philadelphia International on Mon, 8 Jun, arriving in Denver International.Price includes taxes and charges.From P11,672, select.
Philadelphia.P14,180 per passenger.Departing Thu, 30 Jul, returning Sat, 1 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Thu, 30 Jul, arriving in Philadelphia International.Inbound indirect flight with Frontier Airlines, departs from Philadelphia International on Sat, 1 Aug, arriving in Denver International.Price includes taxes and charges.From P14,180, select.
Philadelphia.P15,508 per passenger.Departing Wed, 15 Jul, returning Thu, 16 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Wed, 15 Jul, arriving in Philadelphia International.Inbound indirect flight with Frontier Airlines, departs from Philadelphia International on Thu, 16 Jul, arriving in Denver International.Price includes taxes and charges.From P15,508, select.
Philadelphia.P16,792 per passenger.Departing Wed, 1 Jul, returning Wed, 8 Jul.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Wed, 1 Jul, arriving in Philadelphia International.Inbound direct flight with Frontier Airlines departs from Philadelphia International on Wed, 8 Jul, arriving in Denver International.Price includes taxes and charges.From P16,792, select.
Philadelphia.P18,240 per passenger.Departing Tue, 23 Jun, returning Tue, 30 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Denver International on Tue, 23 Jun, arriving in Philadelphia International.Inbound direct flight with Frontier Airlines departs from Philadelphia International on Tue, 30 Jun, arriving in Denver International.Price includes taxes and charges.From P18,240, select.
Philadelphia.P21,711 per passenger.Departing Thu, 25 Jun, returning Fri, 3 Jul.Return flight with Allegiant Air and Sun Country Airlines.Outbound indirect flight with Allegiant Air, departs from Denver International on Thu, 25 Jun, arriving in Philadelphia International.Inbound indirect flight with Sun Country Airlines, departs from Philadelphia International on Fri, 3 Jul, arriving in Denver International.Price includes taxes and charges.From P21,711, select.
Philadelphia.P23,072 per passenger.Departing Thu, 20 Aug, returning Mon, 24 Aug.Return flight with Sun Country Airlines.Outbound indirect flight with Sun Country Airlines, departs from Denver International on Thu, 20 Aug, arriving in Philadelphia International.Inbound indirect flight with Sun Country Airlines, departs from Philadelphia International on Mon, 24 Aug, arriving in Denver International.Price includes taxes and charges.From P23,072, select.
Philadelphia.P23,381 per passenger.Departing Fri, 31 Jul, returning Sat, 8 Aug.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Denver International on Fri, 31 Jul, arriving in Philadelphia International.Inbound direct flight with Southwest Airlines departs from Philadelphia International on Sat, 8 Aug, arriving in Denver International.Price includes taxes and charges.From P23,381, select.

Find the cheapest month to fly from Denver to Philadelphia

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver to Philadelphia flights are currently cheapest in April.
Mar
from P8,445
Apr
from P3,357
May
from P5,094
Jun
from P11,672
Jul
from P15,508
Aug
from P23,072
Sep
from P25,991
Oct
from P25,991
Nov
from P27,782
Dec
from P28,651
Jan
Find prices
Feb
Find prices

Direct flights from Denver to Philadelphia

Alternative Denver to Philadelphia routes

Looking for the cheapest, fastest or easiest route from Denver to Philadelphia? You could fly into the following airports instead.

Philadelphia International

11km from central Philadelphia
ClosestCheapest
from P3,357
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Blue Bell

22km from central Philadelphia
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Philadelphia Trenton-Mercer

47km from central Philadelphia
from P10,913
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Greater Wilmington

49km from central Philadelphia
from P33,452
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Atlantic City International

75km from central Philadelphia
from P33,506
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Allentown

81km from central Philadelphia
from P13,258
Search flights

Denver to Philadelphia: Flight information

The things to know before you go.
Cheapest flight foundP3,357
Cheapest month to flyApril
Average flight time3 hrs, 38 mins
Most popular airlineAmerican Airlines
Average flights per week536

Finding cheap flights from Denver 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 to Philadelphia is P3,357. 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 38 minutes is the average flight time from Denver to Philadelphia.
American Airlines, Southwest Airlines and United fly direct from Denver to Philadelphia.
As of March 2026, there are 134 flights per week flying from Denver to Philadelphia.
The cheapest month to fly from Denver to Philadelphia is usually April.
If you're flying from Denver, 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 P3,357.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Denver to Philadelphia on Wednesday, 15 April 2026.
Yes – the average flight time is 3 hours and 38 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 March, the average temperature is usually around 4°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.
The cheapest airline that flies to Philadelphia is Frontier Airlines .

Travelling from Denver to Philadelphia: what you need to know

  • Many exciting adventures kick off from Denver's main airport, Denver International Airport (DEN). Explore your options for catching a flight from Denver to Philadelphia departing from this base.

  • Philadelphia International Airport (PHL) and Trenton-Mercer Airport (TTN) are the chief entry points to Philadelphia.

  • The average duration of a direct Denver to Philadelphia flight is 3 hours 35 minutes.

  • The timezone in Philadelphia is UTC-4, which is two hours ahead of Denver.

  • The busiest route for flights from Denver to Philadelphia is from Denver International Airport (DEN) to Philadelphia International Airport (PHL). Choose from 50 weekly services between these two airports. If you want to get going as soon as possible, the earliest flight from DEN to PHL is the 00:20 American Airlines option. If you prefer travelling later, the last scheduled departure is at 23:59 with Frontier Airlines.

  • To ensure you don't miss your Denver to Philadelphia flight, allow plenty of time to check in and find your gate. Arriving two hours ahead of international departures and one hour before domestic flights is the standard rule.

  • Travelling during a popular month like July? Public holidays and other high seasons can mean longer queues and delays at security. Be extra cautious and arrive up to four hours ahead of international flights and two hours before domestic departures.

How to find the cheapest flights from Denver to Philadelphia

  • Right now, P1,678 is the best price we've found for a one-way ticket from Denver to Philadelphia. The cheapest price for a return flight is P3,357. Keep in mind fares can change due to demand at the time of booking.

  • Book two months before your departure date. Pricing trends show that this is the ideal window for finding cheap Denver to Philadelphia flights.

  • Organise your trip for May. That's the best month for landing an incredible deal on plane tickets from Denver to Philadelphia. If you're flexible with your dates, use the 'Whole month' tool to see the lowest price across each month.

  • There's no need to check back in every day to find out if fares have dropped when you set up a Price Alert. We'll notify you as soon as there's a better deal on cheap flights from Denver to Philadelphia.

  • Find a cheap Denver to Philadelphia flight with the help of our filters. Select your ideal departure time, duration and airlines, then sort the results by 'Cheapest' to see the best deals.

Flying from Denver

Denver International Airport (DEN)

  • If you're looking for a direct flight from Denver to Philadelphia, you can leave from Denver International Airport (DEN). Get from DEN to Philadelphia International Airport (PHL) without any stops.

  • Choose from a variety of airlines offering direct Denver to Philadelphia plane tickets with departures from DEN, including:

  • DEN is around 31 kilometres from central Denver. If you're driving, ride-sharing or catching a cab from the centre, it'll take 35 minutes or so to get there, depending on traffic. If you're using public transport, expect the journey time to be around 1 hour 30 minutes.

  • Booking a hotel room for the night can take the hassle out of reaching the airport on time. If you're looking for somewhere to stay before your flight from Denver to Philadelphia, consider Baymont by Wyndham Denver International Airport. It's a quick drive from Denver International Airport.

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

  • The address for DEN is 8500 Pena Boulevard.

Arriving in Philadelphia

Philadelphia International Airport (PHL)

Trenton-Mercer Airport (TTN)

  • After your flight from Denver to Philadelphia has landed, you can make your way to the city centre in around 40 minutes by car. Central Philadelphia is roughly 48 kilometres from Trenton-Mercer Airport (TTN).

  • Public transport will get you there in around 1 hour 45 minutes.

  • Budget, National and Enterprise make collecting a Trenton-Mercer Airport rental car quick and easy. These trusted companies are located around or in the terminal and will have you behind the wheel before you know it.

  • Snap up a deal by reserving your ride from TTN four weeks ahead of time. You can also expect to have a bigger selection of vehicles.

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

Best time to go to Philadelphia

  • February is the quietest month for flights from Denver to Philadelphia, while August is the most popular. Work out the ideal time to visit Philadelphia based on whether you want a bustling atmosphere or a more laid-back vibe.

  • When booking your Denver to Philadelphia tickets, think about what kind of weather you prefer. July is the warmest month in Philadelphia, with temperatures ranging from 18ºC (64ºF) to 32ºC (90ºF).

  • Look for cheap flights from Denver to Philadelphia in January if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between -7ºC (19ºF) and 9ºC (48ºF) on average.

More about Philadelphia

Explore more of United States

  • New York is just one of the many cities in United States waiting to be explored once you've taken in the sights of Philadelphia. Around 129 kilometres to the north-east, its top attractions include Statue of Liberty, Central Park and Empire State Building.

  • Boston is another well-known destination in United States and is around 434 kilometres north-east of Philadelphia. No journey is complete without seeing Freedom Trail, Museum of Fine Arts Boston and Boston Tea Party Ships & Museum.

Plan the rest of your trip from Denver to Philadelphia

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