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Cheap flights from Philadelphia to Denver from C$ 222

PHL — DEN
4 Oct — 11 Oct1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Philadelphia to Denver Intl are usually found in January or April, booked 28 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap flight deals from Philadelphia to Denver

Enter your travel dates to find the best prices.

Cheapest flights from Philadelphia to Denver

Sat 3/103:52 p.m. -
Nonstop4h 07m
Sat 10/105:37 p.m. -
Nonstop3h 43m
Deal found 3/9C$ 443
Wed 28/101:16 p.m. -
1 stop6h 57m
Wed 4/1110:10 a.m. -
Nonstop3h 36m
Deal found 3/9C$ 451
Wed 9/129:55 a.m. -
Nonstop4h 20m
Mon 14/129:48 a.m. -
1 stop6h 04m
Deal found 1/9C$ 454
Tue 29/911:20 a.m. -
1 stop5h 57m
Sat 3/1010:05 a.m. -
Nonstop3h 43m
Deal found 2/9C$ 457
Fri 2/105:15 p.m. -
Nonstop4h 05m
Mon 5/107:35 p.m. -
Nonstop3h 35m
Deal found 3/9C$ 460
Wed 14/106:00 a.m. -
2 stops7h 25m
Tue 20/106:00 p.m. -
Nonstop3h 35m
Deal found 3/9C$ 464
Fri 2/103:55 p.m. -
Nonstop4h 12m
Tue 6/108:51 a.m. -
1 stop7h 03m
Deal found 2/9C$ 468
Thu 17/126:00 a.m. -
1 stop5h 45m
Tue 5/11:35 p.m. -
1 stop7h 21m
Deal found 2/9C$ 471
Sat 12/129:55 a.m. -
Nonstop4h 20m
Wed 30/125:25 p.m. -
Nonstop3h 34m
Deal found 2/9C$ 472
Fri 13/115:15 p.m. -
Nonstop4h 15m
Mon 16/116:30 a.m. -
1 stop5h 30m
Deal found 1/9C$ 474
Fri 2/105:20 a.m. -
Nonstop4h 05m
Fri 9/107:35 p.m. -
Nonstop3h 35m
Deal found 3/9C$ 476

Find flight deals from Philadelphia to Denver

Round-trip from

C$ 443

One-way from

C$ 222

Popular in

June

Cheapest in

January

Average price

C$ 532
United Airlines
  • United Airlines
  • 1/10-10/10
  • Nonstop
  • 7h 45m total
  • Philadelphia to Denver
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United Airlines
  • United Airlines
  • 27/10-31/12
  • Nonstop
  • 4h 20m total
  • Philadelphia to Denver
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 60 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 19 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Philadelphia to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Tue 22/9

6:56 p.m.-11:29 p.m.

1 stop6h 33m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 236
Quickest round-trip

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Wed 30/9

12:30 p.m.-2:20 p.m.

Nonstop3h 50m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 251

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Wed 30/9

8:00 a.m.-10:02 a.m.

Nonstop4h 02m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 251

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Tue 6/10

5:30 a.m.-7:35 a.m.

Nonstop4h 05m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 251

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Sun 27/9

5:00 a.m.-6:50 a.m.

Nonstop3h 50m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 282

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Wed 28/10

7:45 a.m.-10:05 a.m.

Nonstop4h 20m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 291

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Sun 20/12

12:31 p.m.-6:20 p.m.

1 stop7h 49m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 294

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Sun 8/11

7:45 a.m.-10:05 a.m.

Nonstop4h 20m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 312

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Fri 25/9

6:55 p.m.-11:54 p.m.

1 stop6h 59m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 316

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Sat 26/9

12:10 p.m.-6:25 p.m.

2 stops8h 15m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 330

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/9

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Philadelphia to Denver

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

Cheapflights Insights

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

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

To ensure you get the cheapest price possible for a flight from Philadelphia to Denver, you should look to book at least 27 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 Philadelphia to Denver?

Currently, January is the cheapest month in which you can book a flight from Philadelphia to Denver (average of C$ 420). Flying from Philadelphia to Denver in June is currently the most expensive (average of C$ 649). 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 time of day to fly from PHL to DEN?

When flying from Philadelphia to Denver, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 68% versus a flight in the morning.

How much does it cost to fly round-trip from Philadelphia to Denver?

Airfare is typical for this route at the moment.

Philadelphia to Denver flights typically cost between C$ 403 and C$ 635 in October.
The cheapest round-trip price found within the last 5 days was C$ 443 on United Airlines (3 Oct-10 Oct).

Related info for your journey

  • How popular is this Philadelphia to Denver flight route?

    This flight path from Philadelphia to Denver Intl was viewed by 11 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Philadelphia to Denver?

    Airlines like United Airlines and Southwest fly from Philadelphia to Denver in about 4h 02m. The time it takes to get you to your destination is usually consistent. Airlines will cover a distance of 2499 km. All flights are typically direct.

  • What are the most reliable airlines from Philadelphia to Denver?

    No one likes to see their flight delayed. When booking a flight from Philadelphia to Denver consider choosing Volaris (75%), United Airlines (70%) or Air Canada (66%) as they are the most reliable in getting you off to your destination on time.

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

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

  • How can I find direct flights from Philadelphia to Denver?

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Philadelphia to Denver (average of C$ 420). Flying from Philadelphia to Denver in June is currently the most expensive (average of C$ 649). 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.

See more FAQs

Travelling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk

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Alternative routes for Philadelphia to Denver

Reagan-National to Denver flights

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Why should you use Cheapflights to find cheap flight tickets from Philadelphia to Denver?

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