How popular is this Denver to Philadelphia flight route?

Flights from Denver Intl to Philadelphia have been viewed 56 times in the past calendar month.

How long is the flight from Denver to Philadelphia?

Airlines like Southwest and United Airlines fly from Denver to Philadelphia in about 3h 37m. The time it takes to get you to your destination is usually consistent. The distance from Denver to Philadelphia is about 1553 mi. Generally, flights for this route are nonstop.

What are the cheapest airlines flying from Denver to Philadelphia round-trip?

Currently priced at $115, Frontier will fly you from Denver to Philadelphia and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from $128 and $187, respectively. Users have found that Frontier is 62% cheaper than the other options available to this destination.

How far ahead should I book a flight from Denver to Philadelphia?

To ensure you get the cheapest price possible for a flight from Denver to Philadelphia, you should look to book at least 63 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Denver to Philadelphia?

Currently, August is the cheapest month in which you can book a flight from Denver to Philadelphia (average of $236). Flying from Denver to Philadelphia in March is currently the most expensive (average of $295). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest day to fly from Denver to Philadelphia?

Travelers seeking maximum savings on their Denver to Philadelphia flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Denver to Philadelphia

The most flights from DEN to PHL are scheduled on a Thursday (17 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

In terms of precipitation, rainfall in Philadelphia ranges from 2.7 - 4.4 inches per month. July is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Philadelphia when rainfall is around 2.7 in.

If weather is an important factor for your trip to Philadelphia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

What are the cheapest flights from Denver to Philadelphia?

The cheapest flight price from Denver to Philadelphia is $85. On average you can expect to pay $919. The most popular route, (Denver Intl - Philadelphia), can usually be booked for $148.

What are the most reliable airlines from Denver to Philadelphia?

No one likes to see their flight delayed. When booking a flight from Denver to Philadelphia consider choosing British Airways (74%), United Airlines (74%) or Qatar Airways (72%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from Denver to Philadelphia?

The most popular airlines flying from Denver to Philadelphia are American Airlines, JetBlue and Delta. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from Denver to Philadelphia?

Wednesday is generally a great day to depart. Flying on this day could help you save up to 44%.

How far in advance should I book a flight from Denver to Philadelphia?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 17 days in advance, which can save you up to 36% on flights from Denver to Philadelphia compared to booking the week you need them. Waiting 17 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $286. For sooner than that we have options available in the next 3 days from $402.

What is the cheapest month to fly from Denver to Philadelphia?

The best pricing can be found in the month of September. Prices to Philadelphia from Denver average $306. You can even find prices in September for less than $306, as users have found deals to Philadelphia from as low as $111. The month of December appears to be one of the more expensive times to travel to Philadelphia from Denver. Flying in the targeted month can save you up to 22%.

What is the cheapest time of day to fly from DEN to PHL?

It’s typically best to fly out from Denver to Philadelphia in the afternoon. Doing so could potentially save you 53% on the flight price compared to flying at noon, which is usually more expensive.

What airports do I use to fly from Denver to Philadelphia?

If you book a flight from Denver to Philadelphia, you will be flying from Denver Intl to Philadelphia. Flights to Philadelphia (PHL) from Denver Intl (DEN) take 3h 21m for a nonstop flight. There are 14 flights from Denver Intl to Philadelphia per day from 6 airlines.

Can I find deals for flights from Denver to Philadelphia that include hotel bookings?

Yes. In addition to deals on Denver to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Denver to Philadelphia?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Philadelphia.

Can I find deals for business class flights from Denver to Philadelphia?

Yes. Cheapflights offers flight deals from Denver to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$89+ Flights from Denver to Philadelphia

Round-trip from	$183 (Frontier)
One-way from	$89 (Booking.com)
Popular in	December
Cheapest in	September
Average price	$272
Good round-trip deal	$250 or less
Good one-way deal	$139 or less

Sat 9/277:55 amDEN - PHL

Nonstop3h 40mSouthwest

Tue 9/307:45 amPHL - DEN

Nonstop3h 50mSouthwest

Deal found 9/8

$197

Sat 10/45:32 pmDEN - PHL

Nonstop3h 37mUnited Airlines

Sat 10/1110:00 amPHL - DEN

Nonstop4h 06mUnited Airlines

Deal found 9/8

$228

Wed 10/811:59 pmDEN - PHL

1 stop7h 34mJetBlue

Mon 10/137:00 amPHL - DEN

1 stop7h 49mJetBlue

Deal found 9/9

$245

Thu 10/1612:55 amDEN - PHL

1 stop5h 46mDelta

Thu 10/237:05 amPHL - DEN

1 stop9h 41mDelta

Deal found 9/10

$257

Thu 12/48:15 amDEN - PHL

1 stop4h 50mSouthwest

Mon 12/86:35 amPHL - DEN

Nonstop4h 10mSouthwest

Deal found 9/9

$207

Thu 10/21:58 pmDEN - PHL

Nonstop3h 37mUnited Airlines

Wed 10/153:45 pmPHL - DEN

Nonstop4h 12mUnited Airlines

Deal found 9/9

$247

Fri 10/176:55 pmDEN - PHL

Nonstop3h 25mSouthwest

Thu 10/235:00 amPHL - DEN

Nonstop4h 10mSouthwest

Deal found 9/10

$225

Tue 10/75:05 pmDEN - PHL

Nonstop3h 25mSouthwest

Tue 10/146:30 pmPHL - DEN

1 stop5h 35mSouthwest

Deal found 9/9

$226

Mon 10/611:59 pmDEN - PHL

1 stop7h 47mUnited Airlines

Wed 10/158:00 amPHL - DEN

Nonstop4h 06mUnited Airlines

Deal found 9/9

$257

Fri 11/76:20 pmDEN - PHL

Nonstop3h 25mSouthwest

Sun 11/97:00 amPHL - DEN

Nonstop4h 10mSouthwest

Deal found 9/9

$245

Thu 10/26:55 pmDEN - PHL

Nonstop3h 25mSouthwest

Tue 10/77:20 amPHL - DEN

Nonstop4h 10mSouthwest

Deal found 9/9

$251

Mon 11/249:10 amDEN - PHL

1 stop6h 45mSouthwest

Wed 12/312:05 pmPHL - DEN

1 stop6h 35mSouthwest

Deal found 9/10

$257

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$115	Average$234	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$128	Average$306	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$187	Average$445	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$197	Average$336	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$198	Average$349	FlexibilityNo cancel fee	On-time63%
JetBlue	Cheapest$228	Average$325	FlexibilityNo cancel fee	On-time62%

$89+ Cheap flights from Denver to Philadelphia (DEN - PHL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Denver to Philadelphia with Cheapflights

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Cheapflights Tip: The best prices from Denver Intl to Philadelphia are usually found in September or October, booked 63 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Cheap flight deals from Denver to Philadelphia

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Cheapest flights from Denver to PhiladelphiaExplore the most affordable flight options available from Denver to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Explore the most affordable flight options available from Denver to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

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The best insider tips for Denver to Philadelphia flights

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Best time to book a flight from Denver to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Denver with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Denver to Philadelphia

How far ahead should I book a flight from Denver to Philadelphia?

What is the cheapest month to book a flight from Denver to Philadelphia?

What is the cheapest time of day to fly from DEN to PHL?

What is the cheapest day to fly from Denver to Philadelphia?

Weekly flight availability from Denver to Philadelphia

Reviews of airlines servicing Philadelphia

Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Denver to Philadelphia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Denver to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airports do I use to fly from Denver to Philadelphia?

How popular is this Denver to Philadelphia flight route?

How long is the flight from Denver to Philadelphia?

What are the cheapest airlines flying from Denver to Philadelphia round-trip?

What are the most reliable airlines from Denver to Philadelphia?

What are the cheapest flights from Denver to Philadelphia?

Can I find deals for flights from Denver to Philadelphia that include hotel bookings?

How can I find direct flights from Denver to Philadelphia?

Can I find deals for business class flights from Denver to Philadelphia?

What is the cheapest month to book a flight from Denver to Philadelphia?

Traveling to a place near Philadelphia?

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Alternative routes for Denver to Philadelphia

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Top 6 airlines flying from Denver to Philadelphia

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Cheapest flights from Denver to Philadelphia
Explore the most affordable flight options available from Denver to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.