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Cheap flights from Philadelphia to Denver from C$ 224

PHL — DEN
30 Sep — 7 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

Thu 3/97:20 a.m. -
1 stop9h 58m
Sun 6/911:59 p.m. -
Nonstop3h 40m
Deal found 27/8C$ 442
Tue 22/98:00 a.m. -
Nonstop4h 05m
Wed 30/95:37 p.m. -
Nonstop3h 43m
Deal found 27/8C$ 446
Thu 5/113:35 p.m. -
Nonstop4h 20m
Mon 9/117:45 a.m. -
1 stop7h 57m
Deal found 27/8C$ 460
Fri 2/105:15 p.m. -
Nonstop4h 05m
Mon 5/107:35 p.m. -
Nonstop3h 35m
Deal found 28/8C$ 463
Tue 29/126:51 p.m. -
1 stop7h 02m
Tue 12/19:48 a.m. -
1 stop5h 34m
Deal found 27/8C$ 467
Tue 27/101:20 p.m. -
1 stop6h 53m
Fri 30/106:08 p.m. -
Nonstop3h 31m
Deal found 26/8C$ 471
Thu 8/105:45 a.m. -
1 stop6h 17m
Sun 18/1012:59 a.m. -
1 stop6h 30m
Deal found 26/8C$ 474
Sat 12/93:48 p.m. -
Nonstop4h 07m
Tue 22/96:01 p.m. -
Nonstop3h 43m
Deal found 26/8C$ 475
Fri 25/96:55 p.m. -
1 stop6h 59m
Mon 28/95:37 p.m. -
Nonstop3h 43m
Deal found 26/8C$ 477
Fri 25/95:25 a.m. -
Nonstop3h 50m
Fri 2/101:30 p.m. -
Nonstop3h 30m
Deal found 27/8C$ 480
Tue 29/91:35 p.m. -
2 stops8h 05m
Wed 7/106:35 a.m. -
1 stop6h 50m
Deal found 26/8C$ 481

Find flight deals from Philadelphia to Denver

Round-trip from

C$ 446

One-way from

C$ 224

Popular in

June

Cheapest in

January

Average price

C$ 556
United Airlines
  • United Airlines
  • 22/9-30/9
  • Nonstop
  • 7h 48m total
  • Philadelphia to Denver
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Southwest
  • Southwest
  • 14/1
  • Nonstop
  • 4h 15m total
  • Philadelphia to Denver
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Highest demand for flights based on searches. 7% potential increase in price (C$ 61 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 18 potential savings vs. average RT price).
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Average for round-trip flights in August 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

Fri 15/1

6:15 a.m.-12:03 p.m.

1 stop7h 48m

Denver Intl

Wed 20/1

3:10 p.m.-12:51 a.m.

1 stop7h 41m

C$ 491

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Sat 27/2

3:30 p.m.-5:28 p.m.

Nonstop3h 58m

Denver Intl

Tue 2/3

9:48 a.m.-5:22 p.m.

1 stop5h 34m

C$ 513

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Wed 23/12

4:58 p.m.-11:20 p.m.

1 stop8h 22m

Denver Intl

Wed 30/12

11:59 p.m.-5:31 a.m.

Nonstop3h 32m

C$ 519

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Tue 22/12

1:45 p.m.-8:05 p.m.

1 stop8h 20m

Denver Intl

Tue 5/1

12:25 p.m.-9:25 p.m.

1 stop7h 00m

C$ 532

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Sat 27/2

6:35 a.m.-2:05 p.m.

2 stops9h 30m

Denver Intl

Tue 2/3

9:45 a.m.-8:55 p.m.

2 stops9h 10m

C$ 546

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Sat 19/9

8:00 a.m.-10:05 a.m.

Nonstop4h 05m

Denver Intl

Mon 21/9

6:01 p.m.-11:44 p.m.

Nonstop3h 43m

C$ 566

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Fri 2/10

7:10 p.m.-11:00 p.m.

1 stop5h 50m

Denver Intl

Sun 4/10

7:05 p.m.-12:40 a.m.

Nonstop3h 35m

C$ 580

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Thu 24/12

1:01 p.m.-5:35 p.m.

1 stop6h 34m

Denver Intl

Thu 31/12

5:25 p.m.-10:59 p.m.

Nonstop3h 34m

C$ 599

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Tue 6/10

7:45 a.m.-1:30 p.m.

2 stops7h 45m

Denver Intl

Mon 12/10

10:35 a.m.-7:35 p.m.

2 stops7h 00m

C$ 605

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Thu 22/10

7:25 a.m.-6:20 p.m.

2 stops12h 55m

Denver Intl

Mon 26/10

2:05 p.m.-11:55 p.m.

2 stops7h 50m

C$ 608

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/8

Showing 1-10 of 24 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$ 423). Flying from Philadelphia to Denver in June is currently the most expensive (average of C$ 653). 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$ 406 and C$ 640 in September.
The cheapest round-trip price found within the last 5 days was C$ 446 on United Airlines (22 Sep-30 Sep).

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 Southwest, Delta, and United Airlines fly from Philadelphia to Denver in about 3h 58m. The time it takes to get you to your destination can typically vary by up to 3h 50m. Airlines will cover a distance of 2499 km. This flight may include one or multiple stops.

  • 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 (72%), United Airlines (68%) or Air Canada (68%) 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$ 423). Flying from Philadelphia to Denver in June is currently the most expensive (average of C$ 653). 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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