Cheap Flights from Philadelphia to Denver International from P6,462

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Flight deals from Philadelphia to Denver International

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

Denver.P6,462 per passenger.Departing Sat, 5 Apr, returning Tue, 8 Apr.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Philadelphia International on Sat, 5 Apr, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Tue, 8 Apr, arriving in Philadelphia International.Price includes taxes and charges.From P6,462, select.

Denver.P8,107 per passenger.Departing Tue, 25 Mar, returning Wed, 26 Mar.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Philadelphia International on Tue, 25 Mar, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Wed, 26 Mar, arriving in Philadelphia International.Price includes taxes and charges.From P8,107, select.

Denver.P8,367 per passenger.Departing Tue, 6 May, returning Wed, 14 May.Return flight with United.Outbound direct flight with United departs from Philadelphia International on Tue, 6 May, arriving in Denver International.Inbound direct flight with United departs from Denver International on Wed, 14 May, arriving in Philadelphia International.Price includes taxes and charges.From P8,367, select.

Denver.P8,465 per passenger.Departing Thu, 27 Mar, returning Tue, 1 Apr.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Philadelphia International on Thu, 27 Mar, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Tue, 1 Apr, arriving in Philadelphia International.Price includes taxes and charges.From P8,465, select.

Denver.P8,813 per passenger.Departing Wed, 23 Apr, returning Wed, 7 May.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia Trenton-Mercer on Wed, 23 Apr, arriving in Denver International.Inbound indirect flight with Frontier Airlines, departs from Denver International on Wed, 7 May, arriving in Philadelphia Trenton-Mercer.Price includes taxes and charges.From P8,813, select.

Denver.P9,037 per passenger.Departing Mon, 9 Jun, returning Wed, 11 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Philadelphia International on Mon, 9 Jun, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Wed, 11 Jun, arriving in Philadelphia International.Price includes taxes and charges.From P9,037, select.

Denver.P9,832 per passenger.Departing Thu, 5 Jun, returning Tue, 8 Jul.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Philadelphia International on Thu, 5 Jun, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Tue, 8 Jul, arriving in Philadelphia International.Price includes taxes and charges.From P9,832, select.

Denver.P10,165 per passenger.Departing Thu, 29 May, returning Wed, 4 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Philadelphia International on Thu, 29 May, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Wed, 4 Jun, arriving in Philadelphia International.Price includes taxes and charges.From P10,165, select.

Find the cheapest month to fly from Philadelphia to Denver International

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

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Direct flights from Philadelphia to Denver International

Philadelphia to Denver International: Alternative routes

Compare routes from Philadelphia to Denver below. You may find an airport to fly into that's cheaper, faster, or easier than Denver International.

Philadelphia to Denver: Flight information

The things to know before you go.

Cheapest flight found	P6,462
Cheapest month to fly	April
Average flight time	4 hrs, 19 mins
Most popular airline	Southwest Airlines
Average flights per week	137

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

How much are return flights from Philadelphia to Denver International?

The best price we found for a return flight from Philadelphia to Denver International is P6,462. 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.

How long does it take to fly from Philadelphia to Denver International?

4 hours and 19 minutes is the average flight time from Philadelphia to Denver International.

Which airlines fly direct from Philadelphia to Denver International?

Southwest Airlines, American Airlines and Qatar Airways fly direct from Philadelphia to Denver International.

How many flights are there a week from Philadelphia to Denver International?

As of March 2025, there are 148 flights per week flying from Philadelphia to Denver International.

When is the cheapest time to fly from Philadelphia to Denver International?

The cheapest month to fly from Philadelphia to Denver International is usually March 2025.

Which upcoming date is cheapest to fly from Philadelphia to Denver International Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Philadelphia to Denver International Airport on Saturday, 5 April 2025.

Can I get a direct flight from Philadelphia to Denver International Airport?

Yes – the average flight time is 4 hours and 19 minutes.

How can I find the best flight deal to Denver International?

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 Denver International 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.

When is the best time to book flights to Denver?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Denver is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Philadelphia to Denver International with?

The cheapest airline that flies to Denver International is Frontier Airlines .

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

Begin your trip planning by checking out the ideal departure point for your flight from Philadelphia to Denver International Airport (DEN). Explore the options for setting off from Philadelphia International Airport (PHL) or Trenton-Mercer Airport (TTN), two of the city's main airports.
The average duration of a direct flight from Philadelphia to Denver International Airport is 4 hours 12 minutes.
Denver International Airport is located in Denver. The city operates in the UTC-6 timezone and is 2 hours behind Philadelphia.
Philadelphia International Airport (PHL) to Denver International Airport (DEN) is the most popular route. There are 75 direct flights a week to choose from. If you prefer starting your day later, take the last flight with American Airlines at 20:45. Opt for the first PHL to DEN departure operated by Southwest Airlines at 05:00 if you want to get going earlier.
For hassle-free travel, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This ensures you have enough time to catch your flight from Philadelphia to DEN.
With more travellers during peak months like August, get to the terminal earlier than usual. Two hours for domestic flights and up to four for international journeys will help you stay ahead of the crowds. Remember things also get busy during major holidays like Fourth of July.

Airports in Philadelphia

Philadelphia International Airport (PHL)

Get to your destination in one go from Philadelphia International Airport (PHL). Nonstop flights from Philadelphia to Denver International Airport (DEN) can be booked from here.
At PHL, you'll find a variety of airlines that offer direct flights from Philadelphia to Denver International Airport, such as:
The distance from central Philadelphia to PHL is approximately 19 kilometres. Check out Google Maps for the quickest way to get there, whether you want to drive or use public transport.
Have an early flight from Philadelphia to Denver International Airport? Avoid the last-minute rush to the terminal (and enjoy a little extra shut-eye) by picking one of these stays close to Philadelphia International Airport:

About Denver International Airport (DEN)

Once your flight from Philadelphia to Denver International Airport has touched down, relax at a hotel close by. SpringHill Suites Denver Airport is a convenient option that's a quick drive from DEN.

Getting from Denver International Airport (DEN) to central Denver

Denver International Airport is approximately 40 kilometres from the centre of Denver. With your own car rental or if you're catching a cab, the drive is around 34 minutes.
Getting to the centre on public transport takes roughly 1 hour and 31 minutes.

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

The lowest price we've seen for a one-way ticket from Philadelphia to Denver International Airport is P2,516. The cheapest price for a return flight is P6,462. Remember fares may change due to availability at the time of booking.
Book 8 months before flying. After crunching the numbers on our calendar, this is how far you should book ahead to secure cheap tickets from Philadelphia to DEN.
To get the best deal on your tickets from Philadelphia to Denver International Airport, plan your trip for May (it's when flights are cheapest). Flexible with your dates? Use the 'Whole month' search function to see the most affordable day to fly.
Log into your online account or use the app to set up a Price Alert. You'll be notified straight away if the price has dropped. It's simple to do, and it'll save you time looking for cheap tickets from Philadelphia to DEN every day.
Tailor your trip with filters. Choose your preferred arrival and departure times, airlines and total journey duration. You can also sort the results by 'Best,' 'Cheapest' or 'Fastest' flights from Philadelphia to Denver International Airport.

The best time to fly from Philadelphia to Denver International Airport (DEN)

April is the quietest time of year to travel to Denver. Alternatively, follow the crowds and take off in July. This is the most popular month for flights from Philadelphia to Denver International Airport.
The warmest month in Denver is July, with temperatures ranging between 14ºC and 32ºC. Lock in your flights from Philadelphia to DEN in this month if you enjoy this type of weather.
January has average temperatures of between -9ºC and 7ºC. Look for cheap flights from Philadelphia to Denver International Airport sometime around then if you like cooler conditions.

More about Denver

Start your Denver trip off on the right foot by choosing the ideal place to stay. Once you've booked your flight from Philadelphia to Denver International Airport, check out our selection of accommodation options including:
One of the best ways to get to know Denver is to check out its top sights. Highlights include Denver Art Museum, Union Station and Denver Botanic Gardens.

Complete your Denver trip with a car rental

Exit all those tabs and let us do the hard work for you. We can also help you find deals on car rentals in Denver once you've booked your cheap flight from Philadelphia to Denver International Airport. Easily compare prices all in one place and drive away with the perfect rental for less.