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Cheap flights from Philadelphia to Denver from C$ 228

PHL — DEN
28 Oct — 4 Nov1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Philadelphia to Denver Intl are usually found in January or February, booked 31 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

Tue 13/105:22 p.m. -
2 stops32h 56m
Tue 10/116:31 p.m. -
1 stop10h 50m
Deal found 25/9C$ 378
Mon 23/117:45 a.m. -
Nonstop4h 20m
Thu 26/112:00 p.m. -
Nonstop3h 31m
Deal found 27/9C$ 454
Sat 7/111:16 p.m. -
1 stop6h 57m
Mon 9/116:08 p.m. -
Nonstop3h 31m
Deal found 28/9C$ 462
Thu 29/109:45 a.m. -
1 stop7h 32m
Mon 2/116:08 p.m. -
Nonstop3h 31m
Deal found 28/9C$ 468
Wed 28/101:16 p.m. -
1 stop6h 57m
Tue 10/114:10 p.m. -
1 stop5h 21m
Deal found 23/9C$ 475
Tue 3/111:20 p.m. -
1 stop6h 53m
Fri 6/116:08 p.m. -
Nonstop3h 31m
Deal found 26/9C$ 477
Thu 24/129:10 a.m. -
1 stop6h 43m
Tue 29/128:00 a.m. -
1 stop7h 29m
Deal found 28/9C$ 482
Wed 28/106:25 a.m. -
1 stop5h 30m
Tue 10/1110:50 a.m. -
2 stops8h 35m
Deal found 23/9C$ 489
Tue 20/106:00 a.m. -
2 stops9h 20m
Tue 10/1110:55 a.m. -
2 stops9h 15m
Deal found 26/9C$ 496
Sat 31/105:00 a.m. -
Nonstop4h 05m
Sat 7/115:30 p.m. -
Nonstop3h 25m
Deal found 24/9C$ 498
Fri 13/111:50 p.m. -
2 stops8h 15m
Mon 16/116:30 a.m. -
1 stop5h 30m
Deal found 25/9C$ 503

Find flight deals from Philadelphia to Denver

Round-trip from

C$ 378

One-way from

C$ 228

Popular in

June

Cheapest in

January

Average price

C$ 609

Good round-trip deal

C$ 1,098 or less

Good one-way deal

C$ 266 or less
Frontier
  • Frontier
  • 13/10-10/11
  • 3 total stops
  • 43h 46m total
  • Philadelphia to Denver
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Southwest
  • Southwest
  • 20/2-31/12
  • Nonstop
  • 4h 15m total
  • Philadelphia to Denver
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Highest demand for flights based on searches. 5% potential increase in price (C$ 42 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 September 2026
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Price to beat on a round-trip flight from Philadelphia to Denver Intl.
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Price to beat on a one-way flight from Philadelphia to Denver Intl.
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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 3/11

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

Nonstop4h 20m

Denver Intl

Wed 31/12

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

Nonstop0h 00m

C$ 228

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Thu 29/10

5:20 a.m.-9:36 a.m.

1 stop6h 16m

Denver Intl

Wed 31/12

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

Nonstop0h 00m

C$ 242

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Tue 22/12

7:37 p.m.-12:15 a.m.

1 stop6h 38m

Denver Intl

Wed 31/12

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

Nonstop0h 00m

C$ 242

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Tue 20/10

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$ 298

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Sun 25/10

5:45 a.m.-10:02 a.m.

1 stop6h 17m

Denver Intl

Wed 31/12

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

Nonstop0h 00m

C$ 303
Quickest round-trip

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Tue 20/10

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$ 312

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Thu 31/12

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

Nonstop4h 20m

Denver Intl

Wed 31/12

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

Nonstop0h 00m

C$ 322

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Fri 27/11

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

Nonstop4h 15m

Denver Intl

Wed 31/12

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

Nonstop0h 00m

C$ 322

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Fri 23/10

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$ 327

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Sun 1/11

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

Nonstop4h 15m

Denver Intl

Wed 31/12

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

Nonstop0h 00m

C$ 334

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/9

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 30 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$ 447). Flying from Philadelphia to Denver in June is currently the most expensive (average of C$ 665). 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 77% versus a flight in the afternoon.

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

Airfare is below average for this route at the moment.

Philadelphia to Denver flights typically cost between C$ 400 and C$ 701 in October.
The cheapest round-trip price found within the last 5 days was C$ 378 on Frontier (13 Oct-10 Nov).

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 10 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 and United Airlines 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 United Airlines (74%), Volaris (69%) or American Airlines (68%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Philadelphia to Denver?

    While on average a flight from Philadelphia to Denver is generally C$ 685, our data shows the cheapest flight currently is C$ 162. When looking at the most popular route, (Philadelphia - Denver Intl), you can expect to pay C$ 502 for that flight.

  • 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$ 447). Flying from Philadelphia to Denver in June is currently the most expensive (average of C$ 665). 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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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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Yes! Cheapflights helps users easily find flights from Philadelphia to Denver with no change fees.

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