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Cheap flights from Philadelphia to Denver from C$ 219

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/8. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
5 Sep — 12 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
Explore the most affordable flight options available from Philadelphia to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 August 2026.

Wed 30/95:45 p.m. -
1 stop27h 52m
Mon 5/106:56 p.m. -
1 stop14h 06m
Deal found 5/8C$ 340
Sat 7/1112:43 p.m. -
1 stop11h 50m
Fri 13/116:30 a.m. -
1 stop9h 45m
Deal found 4/8C$ 353
Sat 5/92:10 p.m. -
Nonstop3h 55m
Sat 12/95:20 p.m. -
Nonstop3h 35m
Deal found 5/8C$ 465
Thu 27/85:25 a.m. -
Nonstop3h 50m
Sat 5/93:15 p.m. -
Nonstop3h 35m
Deal found 4/8C$ 467
Tue 1/98:00 a.m. -
Nonstop4h 05m
Sun 6/98:35 a.m. -
1 stop7h 19m
Deal found 2/8C$ 474
Fri 30/1011:20 a.m. -
1 stop8h 29m
Wed 4/112:00 p.m. -
Nonstop3h 31m
Deal found 5/8C$ 479
Wed 9/910:05 a.m. -
Nonstop4h 05m
Sat 12/96:01 p.m. -
Nonstop3h 43m
Deal found 4/8C$ 481
Sat 19/98:00 a.m. -
Nonstop4h 05m
Mon 21/96:01 p.m. -
Nonstop3h 43m
Deal found 4/8C$ 482
Thu 5/115:15 p.m. -
Nonstop4h 15m
Mon 9/1111:15 a.m. -
Nonstop3h 20m
Deal found 4/8C$ 483

Find flight deals from Philadelphia to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 6 August 2026.

Round-trip from

C$ 340

One-way from

C$ 226

Popular in

June

Cheapest in

January

Average price

C$ 517
Frontier
  • Frontier
  • 30/9-5/10
  • 2 total stops
  • 41h 58m total
  • Philadelphia to Denver
Search Deals
Southwest
  • Southwest
  • 11/9
  • Nonstop
  • 3h 50m total
  • Philadelphia to Denver
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 79 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 6 August 2026.
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 8/9

6:00 a.m.-7:55 a.m.

Nonstop3h 55m

Denver Intl

Thu 10/9

6:00 p.m.-11:50 p.m.

Nonstop3h 50m

C$ 481

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Thu 17/9

7:40 p.m.-12:30 a.m.

1 stop6h 50m

Denver Intl

Mon 21/9

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

Nonstop3h 43m

C$ 497

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Wed 11/11

5:15 a.m.-11:58 a.m.

1 stop8h 43m

Denver Intl

Sat 21/11

1:25 p.m.-11:50 p.m.

1 stop8h 25m

C$ 509

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Wed 14/10

6:35 p.m.-10:25 p.m.

1 stop5h 50m

Denver Intl

Wed 21/10

11:15 a.m.-9:30 p.m.

2 stops8h 15m

C$ 516

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Tue 15/9

7:15 a.m.-2:45 p.m.

2 stops9h 30m

Denver Intl

Sat 19/9

8:35 a.m.-6:25 p.m.

2 stops7h 50m

C$ 523
Quickest round-trip

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Wed 7/10

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$ 542

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Sun 25/10

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

Nonstop4h 20m

Denver Intl

Thu 29/10

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

Nonstop3h 31m

C$ 544

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Fri 6/11

10:00 a.m.-12:20 p.m.

Nonstop4h 20m

Denver Intl

Mon 9/11

2:00 p.m.-7:31 p.m.

Nonstop3h 31m

C$ 544

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Sat 7/11

7:50 a.m.-4:20 p.m.

2 stops10h 30m

Denver Intl

Fri 13/11

2:10 p.m.-11:55 p.m.

2 stops7h 45m

C$ 584

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Wed 30/9

6:16 a.m.-11:12 a.m.

1 stop6h 56m

Denver Intl

Mon 5/10

5:37 p.m.-11:20 p.m.

Nonstop3h 43m

C$ 635

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/8

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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$ 426). Flying from Philadelphia to Denver in June is currently the most expensive (average of C$ 660). 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?

Find hourly flight availability from Philadelphia to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 6 August 2026.

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 below average for this route at the moment.

Philadelphia to Denver flights typically cost between C$ 383 and C$ 650 in September.
The cheapest round-trip price found within the last 5 days was C$ 340 on Frontier (30 Sep-5 Oct).

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 3h 55m. The time it takes to get you to your destination can typically vary by up to 2h 55m. 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 Southwest (78%), Volaris (73%) or United Airlines (72%) 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$ 426). Flying from Philadelphia to Denver in June is currently the most expensive (average of C$ 660). 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

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Denver flights

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How does Cheapflights help users find flights from Philadelphia to Denver?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Philadelphia to Denver. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Philadelphia to Denver for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Philadelphia to Denver with no change fees?

Yes! Cheapflights helps users easily find flights from Philadelphia to Denver with no change fees.

Can Cheapflights notify me if prices for flights from Philadelphia to Denver become cheaper?

Yes! Start tracking prices for Philadelphia to Denver flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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