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Cheap flights from Philadelphia to Denver from C$ 176

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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
7 Jun — 14 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Philadelphia to Denver Intl are usually found in August or July, booked 28 days in advance, depart on a Tuesday or Monday 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 8 May 2026.

Wed 26/87:00 a.m.
PHL
-
DEN
1 stop14h 19m
Frontier
Sun 30/86:03 a.m.
DEN
-
PHL
1 stop10h 38m
Frontier
Deal found 5/5C$ 312
Wed 27/58:00 a.m.
PHL
-
DEN
Nonstop4h 01m
United Airlines
Thu 28/511:59 p.m.
DEN
-
PHL
Nonstop3h 32m
United Airlines
Deal found 4/5C$ 350
Sun 24/56:12 a.m.
PHL
-
DEN
1 stop5h 31m
Delta
Sun 24/54:41 p.m.
DEN
-
PHL
1 stop6h 16m
Delta
Deal found 7/5C$ 378
Wed 1/71:50 p.m.
PHL
-
DEN
2 stops8h 10m
Southwest
Sat 4/76:10 a.m.
DEN
-
PHL
1 stop7h 00m
Southwest
Deal found 7/5C$ 385
Fri 3/78:00 a.m.
PHL
-
DEN
2 stops9h 10m
Southwest
Sat 4/77:40 a.m.
DEN
-
PHL
2 stops9h 00m
Southwest
Deal found 5/5C$ 391
Wed 27/52:00 p.m.
PHL
-
DEN
2 stops8h 40m
Southwest
Fri 29/57:00 p.m.
DEN
-
PHL
1 stop13h 50m
Southwest
Deal found 6/5C$ 393

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 8 May 2026.

Round-trip from

C$ 312

One-way from

C$ 176

Popular in

March

Cheapest in

August

Average price

C$ 415

Good one-way deal

C$ 379 or less
Frontier
  • Frontier
  • 26/8-30/8
  • 2 total stops
  • 24h 57m total
  • Philadelphia to Denver
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Southwest
  • Southwest
  • 1/7
  • Nonstop
  • 4h 00m total
  • Philadelphia to Denver
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 18 potential savings vs. average RT price).
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Average for round-trip flights in May 2026
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Price to beat on a one-way flight from Philadelphia to Denver Intl.
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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 8 May 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 - DEN

PHLDEN

Philadelphia

Wed 1/7

1:50 p.m.-8:00 p.m.

2 stops8h 10m

Denver Intl

Sat 4/7

6:10 a.m.-3:10 p.m.

1 stop7h 00m

C$ 385

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 3/7

8:00 a.m.-3:10 p.m.

2 stops9h 10m

Denver Intl

Sun 5/7

7:15 a.m.-5:50 p.m.

2 stops8h 35m

C$ 580
Quickest round-trip

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 15/10

7:50 a.m.-1:15 p.m.

2 stops7h 25m

Denver Intl

Tue 20/10

1:30 p.m.-9:40 p.m.

2 stops6h 10m

C$ 638

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 17/6

11:25 a.m.-4:25 p.m.

1 stop7h 00m

Denver Intl

Fri 19/6

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

2 stops8h 00m

C$ 671

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 18/7

2:50 p.m.-7:50 p.m.

2 stops7h 00m

Denver Intl

Wed 22/7

12:20 p.m.-9:20 p.m.

2 stops7h 00m

C$ 678

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 14/8

2:05 p.m.-7:50 p.m.

2 stops7h 45m

Denver Intl

Mon 17/8

11:05 a.m.-9:40 p.m.

2 stops8h 35m

C$ 679

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 26/5

6:24 p.m.-8:44 a.m.

1 stop16h 20m

Denver Intl

Wed 10/6

5:45 a.m.-4:06 p.m.

1 stop8h 21m

C$ 716

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 30/5

9:45 a.m.-5:55 p.m.

2 stops10h 10m

Denver Intl

Sun 31/5

6:20 a.m.-1:25 p.m.

1 stop5h 05m

C$ 716

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Mon 3/8

12:50 p.m.-8:00 p.m.

2 stops9h 10m

Denver Intl

Sun 9/8

2:10 p.m.-11:15 p.m.

2 stops7h 05m

C$ 734

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 18/6

12:50 p.m.-8:45 p.m.

2 stops9h 55m

Denver Intl

Mon 22/6

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

2 stops8h 00m

C$ 743

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/5

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
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, August is the cheapest month in which you can book a flight from Philadelphia to Denver (average of C$ 387). Flying from Philadelphia to Denver in March is currently the most expensive (average of C$ 584). 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 8 May 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 42% versus a flight in the afternoon.

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

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 6 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 8h 10m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 2499 km.

  • 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 Qatar Airways (96%), United Airlines (93%) or Air Canada (92%) 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$ 426, our data shows the cheapest flight currently is C$ 205. When looking at the most popular route, (Philadelphia - Denver Intl), you can expect to pay C$ 693 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, August is the cheapest month in which you can book a flight from Philadelphia to Denver (average of C$ 387). Flying from Philadelphia to Denver in March is currently the most expensive (average of C$ 584). 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
Golden
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

Fly with Cheapflights

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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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