What airlines fly to Philadelphia?

United Airlines, Frontier and Delta are the top three most popular airlines that fly to Philadelphia from Denver according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 6 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

How many flights depart from Denver to Philadelphia on average per week?

As of May 2026, there are 90 flights per week flying from Denver to Philadelphia. The most common day of the week flights depart is Wed, with 20% of flights taking off on this day.

What is the cheapest airline that flies from Denver Intl to Philadelphia?

United Airlines, Frontier, and Southwest are the most popular carriers operating from Denver Intl to Philadelphia

How many flights depart from Denver to Philadelphia on average per day?

The number of flights available between Denver and Philadelphia is 12 per day as of May 2026. The most frequent departure time is 8:00AM, with 42% of daily flights leaving at noon.

When did momondo last update prices for flights from Denver Intl Airport to Philadelphia Airport?

Prices for flights from Denver Intl Airport to Philadelphia Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Denver Intl Airport to Philadelphia Airport?

There are 6 operators available for flights from Denver Intl Airport to Philadelphia Airport as of May 2026.

How old do you have to be to fly from Denver Intl Airport to Philadelphia Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to Philadelphia Airport.

What documentation or ID do you need to fly to Philadelphia Airport?

The required travel and health documents for your Philadelphia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Philadelphia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$115 Cheap Flights from Denver to Philadelphia in 2026

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4:25 pm - 6:00 am

DEN

PHL

11h 35m

1 stop

12:44 pm - 2:58 pm

PHL

DEN

4h 14mnonstop

$203Frontier

Tue, Jul 21 - Wed, Jul 22

10:39 pm - 9:16 am

DEN

PHL

8h 37m

1 stop

12:42 pm - 2:56 pm

PHL

DEN

4h 14mnonstop

$208Frontier

Fri, Jul 3 - Sat, Jul 4

8:40 am - 2:02 pm

DEN

PHL

27h 22m

1 stop

8:44 pm - 11:04 pm

PHL

DEN

4h 20mnonstop

$209Frontier

Tue, Sep 15 - Wed, Sep 16

11:59 pm - 5:38 am

DEN

PHL

3h 39mnonstop

11:00 am - 6:04 pm

PHL

DEN

9h 04m

1 stop

$211Frontier

Mon, Jun 15 - Tue, Jun 16

5:17 pm - 2:25 pm

DEN

PHL

19h 08m

1 stop

8:44 pm - 11:04 pm

PHL

DEN

4h 20mnonstop

$213Frontier

Tue, Sep 15 - Wed, Sep 16

11:59 pm - 5:39 am

DEN

PHL

3h 40mnonstop

8:30 am - 2:00 pm

PHL

DEN

7h 30m

1 stop

$224Frontier

Mon, Aug 10 - Tue, Aug 11

11:59 pm - 5:39 am

DEN

PHL

3h 40mnonstop

8:30 am - 2:00 pm

PHL

DEN

7h 30m

1 stop

$229Frontier

Mon, Jul 27 - Tue, Jul 28

11:59 pm - 5:39 am

DEN

PHL

3h 40mnonstop

8:30 am - 2:00 pm

PHL

DEN

7h 30m

1 stop

$230Frontier

Fri, Jul 10 - Sat, Jul 11

6:05 am - 11:47 am

DEN

PHL

3h 42mnonstop

8:44 pm - 11:04 pm

PHL

DEN

4h 20mnonstop

$240Frontier

Sat, Sep 5 - Sat, Sep 12

6:05 am - 11:47 am

DEN

PHL

3h 42mnonstop

12:44 pm - 2:58 pm

PHL

DEN

4h 14mnonstop

$241Frontier

Sat, Jul 4 - Tue, Jul 21

Frontier flights from Denver to Philadelphia

Our best Frontier deals on Denver to Philadelphia flight tickets

Frontier

Jul 21

DEN4:25 pmDenver Intl

11h 35m

1 stop

PHL6:00 amPhiladelphia

Jul 22

PHL12:44 pmPhiladelphia

4h 14m

DEN2:58 pmDenver Intl

$203

Frontier

Jul 3

DEN10:39 pmDenver Intl

8h 37m

1 stop

PHL9:16 amPhiladelphia

Jul 4

PHL12:42 pmPhiladelphia

4h 14m

DEN2:56 pmDenver Intl

$208

Frontier

Sep 15

DEN8:40 amDenver Intl

27h 22m

1 stop

PHL2:02 pmPhiladelphia

Sep 16

PHL8:44 pmPhiladelphia

4h 20m

DEN11:04 pmDenver Intl

$209

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Tue 7/21

4:25 pm-6:00 am

1 stop11h 35m

Philadelphia

Wed 7/22

12:44 pm-2:58 pm

Nonstop4h 14m

$203

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Fri 7/3

10:39 pm-9:16 am

1 stop8h 37m

Philadelphia

Sat 7/4

12:42 pm-2:56 pm

Nonstop4h 14m

$208

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Tue 9/15

8:40 am-2:02 pm

1 stop27h 22m

Philadelphia

Wed 9/16

8:44 pm-11:04 pm

Nonstop4h 20m

$209

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Mon 6/15

11:59 pm-5:38 am

Nonstop3h 39m

Philadelphia

Tue 6/16

11:00 am-6:04 pm

1 stop9h 04m

$211

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Tue 9/15

5:17 pm-2:25 pm

1 stop19h 08m

Philadelphia

Wed 9/16

8:44 pm-11:04 pm

Nonstop4h 20m

$213

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Mon 8/10

11:59 pm-5:39 am

Nonstop3h 40m

Philadelphia

Tue 8/11

8:30 am-2:00 pm

1 stop7h 30m

$224

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Mon 7/27

11:59 pm-5:39 am

Nonstop3h 40m

Philadelphia

Tue 7/28

8:30 am-2:00 pm

1 stop7h 30m

$229

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Fri 7/10

11:59 pm-5:39 am

Nonstop3h 40m

Philadelphia

Sat 7/11

8:30 am-2:00 pm

1 stop7h 30m

$230

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Sat 9/5

6:05 am-11:47 am

Nonstop3h 42m

Philadelphia

Sat 9/12

8:44 pm-11:04 pm

Nonstop4h 20m

$240

Quickest round-trip

DenverPhiladelphia

DEN - PHL

DENPHL

Denver Intl

Sat 7/4

6:05 am-11:47 am

Nonstop3h 42m

Philadelphia

Tue 7/21

12:44 pm-2:58 pm

Nonstop4h 14m

$241

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Denver to Philadelphia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Denver and Philadelphia?

What is the cheapest month to fly to Philadelphia?

The cheapest month to fly to Philadelphia from Denver is in February. Flight prices, which tend to average around $263, are often lower during this time because this is during the off-season. The month of September is another great option to travel to Philadelphia, with average flight prices from Denver averaging around $277.

What is the cheapest day to depart on your flight to Philadelphia?

The cheapest day to depart from Denver to Philadelphia is on a Thursday. Travelers who choose to depart for Philadelphia on a Thursday will often find tickets for as low as $347. On the other hand, Monday is the most expensive day to depart from Denver because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $485.

What is the cheapest time of day to depart on your flight to Philadelphia?

According to our data, the cheapest time of day to fly to Philadelphia is in the evening. momondo users have found flights departing from Denver to Philadelphia in the evening for as low as $260. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is at noon when prices are around $468.

What is the cheapest Denver Intl to Philadelphia flight route?

Fly from Denver Intl to Philadelphia for the best Denver Intl - Philadelphia flight prices

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

You are more likely to see cheaper flights to Philadelphia from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $327 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from Denver for as low as $282 on momondo.

What cabin class options are available on Denver to Philadelphia flights?

There are 4 cabin classes available to choose from on Denver to Philadelphia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Denver to Philadelphia flights?

You could potentially save up to 26% on your flight if you consider stops on a Denver to Philadelphia flight.

How have Denver to Philadelphia flight prices changed over time?

As of May 2026, prices for Denver to Philadelphia flights are approximately 94% more expensive when compared to flights at the same time last year.

When to book flights from Denver to Philadelphia

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Philadelphia according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Denver to Philadelphia (DEN to PHL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to Philadelphia

Best Price Found	$193
Fastest flight time	3h 30m
Direct flights	Every day
Airports in Philadelphia	1 airport

The best one-way flight to Philadelphia from Denver in the past 72 hours is $193. The best round-trip flight deal from Denver to Philadelphia found on momondo in the last 72 hours is $353.

The fastest flight from Denver to Philadelphia takes 3h 30m

Direct flights go from Denver to Philadelphia every day.

There is 1 airport in Philadelphia. From Denver there are direct flights to Philadelphia (PHL).

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Frequently asked questions about flying from Denver to Philadelphia

How far is Denver Intl to Philadelphia by plane?
Denver Intl and Philadelphia are 1574.0 mi apart from one another. Typically, this will take 3h 30m by plane in normal conditions.
When did momondo last update prices for flights from Denver Intl Airport to Philadelphia Airport?
Prices for flights from Denver Intl Airport to Philadelphia Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Denver Intl Airport to Philadelphia Airport?
There are 6 operators available for flights from Denver Intl Airport to Philadelphia Airport as of May 2026.
How old do you have to be to fly from Denver Intl Airport to Philadelphia Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to Philadelphia Airport.
What documentation or ID do you need to fly to Philadelphia Airport?
The required travel and health documents for your Philadelphia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Philadelphia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Denver to Philadelphia?
momondo data reveals that the most frequently booked plane model on the route from Denver to Philadelphia is Boeing 737-800, representing 21.27% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 17.80%, Boeing 737-800 Passenger/BBJ2 (winglets) at 10.70%, and Airbus A320neo at 10.52%.
What is the most popular airline from Denver to Philadelphia?
momondo data reveals that the most frequently booked airline on the route from Denver to Philadelphia is Frontier, representing 38% of all bookings. The subsequent popular airlines are American Airlines at 33%, United Airlines at 16%, and Southwest at 13%.

Best airlines flying from Denver to Philadelphia

Compare and see reviews for airlines that fly from Denver to Philadelphia with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $118	Free Cancellation	Rating 5.6 2,932 reviews	Search Frontier flights
JetBlue	PriceFrom $122	Free Cancellation	Rating 7.1 2,982 reviews	Search JetBlue flights
Delta	PriceFrom $128	Free Cancellation	Rating 7.9 8,425 reviews	Search Delta flights
United Airlines	PriceFrom $197	Free Cancellation	Rating 7.4 9,749 reviews	Search United Airlines flights
Southwest	PriceFrom $216	Free Cancellation	Rating 7.9 4,265 reviews	Search Southwest flights
American Airlines	PriceFrom $216	Free Cancellation	Rating 7.1 11,639 reviews	Search American Airlines flights

Southwest Flights From Denver to Philadelphia
Southwest flight deals from Denver to Philadelphia start from $216 round-trip. Over the 10 Southwest flights for this route in a normal week, average airfare is usually $401 round-trip - but some users have found much cheaper deals with momondo.
United Airlines Flights From Denver to Philadelphia
$197 is the best United Airlines flight deal from Denver to Philadelphia found on momondo over the last 72 hours. The average United Airlines ticket price found was closer to $460, however, with flight time and availability significantly affecting the price. United Airlines (7.4/10 from 9,749 user reviews) flies into Philadelphia from Denver 18 times in an average week so prices can vary.

Wildwood

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Cape May

Wildwood Crest

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Cherry Hill

King of Prussia

Newark

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Reading

Dover

North Wildwood

Avalon

Lewes

Stone Harbor

Essington

New Castle

Vineland

Chester

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Why use momondo?

Why should I use momondo to find a flight deal from Denver to Philadelphia?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Philadelphia from Denver.

Can I find flights from Denver to Philadelphia with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Denver to Philadelphia flights to just show those with flexible booking policies.

How can momondo help me find flights from Denver to Philadelphia?

Once you have performed a search for Denver to Philadelphia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Denver to Philadelphia right now. Can momondo alert me if prices change?

Price alerts on flights to Philadelphia from Denver are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.