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Cheap flights from Philadelphia to Denver from C$ 222

PHL — DEN
23 Sep — 30 Sep1
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

Mon 23/117:00 p.m. -
Nonstop4h 19m
Tue 1/126:30 a.m. -
1 stop9h 02m
Deal found 20/8C$ 420
Fri 9/106:06 p.m. -
1 stop16h 11m
Tue 13/109:12 p.m. -
2 stops19h 03m
Deal found 22/8C$ 430
Mon 21/98:00 a.m. -
Nonstop4h 05m
Mon 28/95:37 p.m. -
Nonstop3h 43m
Deal found 23/8C$ 442
Mon 23/1111:47 a.m. -
Nonstop4h 28m
Tue 1/1211:59 p.m. -
Nonstop3h 27m
Deal found 20/8C$ 443
Thu 10/910:05 a.m. -
Nonstop4h 05m
Tue 15/98:15 a.m. -
1 stop7h 39m
Deal found 19/8C$ 450
Thu 17/97:40 p.m. -
1 stop6h 50m
Mon 21/96:01 p.m. -
Nonstop3h 43m
Deal found 24/8C$ 456
Sat 5/93:48 p.m. -
Nonstop4h 07m
Sat 12/91:45 p.m. -
Nonstop3h 40m
Deal found 19/8C$ 457
Fri 6/115:00 a.m. -
Nonstop4h 15m
Mon 9/116:45 p.m. -
Nonstop3h 20m
Deal found 23/8C$ 458
Wed 16/125:00 a.m. -
Nonstop4h 20m
Sat 9/16:00 a.m. -
2 stops10h 40m
Deal found 22/8C$ 463
Mon 21/95:25 a.m. -
Nonstop3h 50m
Wed 23/96:15 p.m. -
1 stop13h 25m
Deal found 24/8C$ 464
Sat 5/93:48 p.m. -
Nonstop4h 07m
Wed 16/98:14 a.m. -
1 stop7h 40m
Deal found 20/8C$ 465
Mon 23/111:16 p.m. -
1 stop6h 57m
Fri 27/116:08 p.m. -
Nonstop3h 31m
Deal found 19/8C$ 467

Find flight deals from Philadelphia to Denver

Round-trip from

C$ 420

One-way from

C$ 222

Popular in

June

Cheapest in

January

Average price

C$ 545
Frontier
  • Frontier
  • 23/11-1/12
  • 1 total stop
  • 13h 21m total
  • Philadelphia to Denver
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United Airlines
  • United Airlines
  • 30/9
  • Nonstop
  • 4h 02m total
  • Philadelphia to Denver
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Highest demand for flights based on searches. 8% potential increase in price (C$ 65 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 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

Mon 28/9

5:25 a.m.-7:15 a.m.

Nonstop3h 50m

Denver Intl

Thu 1/10

5:50 a.m.-2:40 p.m.

1 stop6h 50m

C$ 456
Quickest round-trip

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Sat 12/9

6:30 a.m.-8:20 a.m.

Nonstop3h 50m

Denver Intl

Sat 19/9

5:20 p.m.-10:55 p.m.

Nonstop3h 35m

C$ 457

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Fri 25/9

5:25 a.m.-7:15 a.m.

Nonstop3h 50m

Denver Intl

Thu 1/10

5:50 a.m.-2:40 p.m.

1 stop6h 50m

C$ 472

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Thu 5/11

3:35 p.m.-5:55 p.m.

Nonstop4h 20m

Denver Intl

Sun 8/11

6:08 p.m.-11:39 p.m.

Nonstop3h 31m

C$ 487

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Tue 6/10

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

Nonstop4h 05m

Denver Intl

Sun 11/10

7:05 p.m.-12:35 a.m.

Nonstop3h 30m

C$ 487

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Wed 16/9

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

1 stop6h 33m

Denver Intl

Sun 20/9

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

Nonstop3h 43m

C$ 501

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Wed 4/11

5:00 a.m.-7:20 a.m.

Nonstop4h 20m

Denver Intl

Sun 8/11

6:30 a.m.-1:50 p.m.

1 stop5h 20m

C$ 501

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Wed 25/11

5:00 a.m.-7:15 a.m.

Nonstop4h 15m

Denver Intl

Wed 25/11

7:05 p.m.-12:30 a.m.

Nonstop3h 25m

C$ 504

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Thu 10/9

11:04 a.m.-4:24 p.m.

1 stop7h 20m

Denver Intl

Sun 13/9

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

Nonstop3h 43m

C$ 516

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Thu 5/11

1:50 p.m.-8:05 p.m.

2 stops8h 15m

Denver Intl

Thu 12/11

1:20 p.m.-10:15 p.m.

2 stops6h 55m

C$ 516

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/8

Showing 1-10 of 22 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$ 419). Flying from Philadelphia to Denver in June is currently the most expensive (average of C$ 647). 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$ 648 in November.
The cheapest round-trip price found within the last 5 days was C$ 420 on Frontier (23 Nov-1 Dec).

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 fly from Philadelphia to Denver in about 3h 50m. 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 (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$ 419). Flying from Philadelphia to Denver in June is currently the most expensive (average of C$ 647). 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?

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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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