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Cheap flights from Philadelphia to Denver from C$ 137

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
17 May — 24 May1
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 32 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 17 April 2026.

Tue 11/810:00 a.m.
PHL
-
DEN
Nonstop4h 04m
United Airlines
Tue 18/811:59 p.m.
DEN
-
PHL
1 stop7h 47m
United Airlines
Deal found 13/4C$ 287
Thu 7/55:40 a.m.
PHL
-
DEN
Nonstop4h 05m
Southwest
Tue 12/56:10 p.m.
DEN
-
PHL
Nonstop3h 45m
Southwest
Deal found 12/4C$ 288
Wed 26/88:00 a.m.
PHL
-
DEN
Nonstop4h 04m
United Airlines
Tue 1/95:54 p.m.
DEN
-
PHL
Nonstop3h 43m
United Airlines
Deal found 16/4C$ 295
Sat 9/59:55 a.m.
PHL
-
DEN
Nonstop4h 21m
United Airlines
Tue 12/51:30 p.m.
DEN
-
PHL
1 stop7h 04m
United Airlines
Deal found 16/4C$ 302
Sat 9/55:35 a.m.
PHL
-
DEN
Nonstop4h 05m
Southwest
Mon 11/57:05 p.m.
DEN
-
PHL
Nonstop3h 30m
Southwest
Deal found 17/4C$ 303
Tue 11/86:25 a.m.
PHL
-
DEN
1 stop5h 25m
Southwest
Tue 18/86:35 a.m.
DEN
-
PHL
2 stops7h 25m
Southwest
Deal found 13/4C$ 307
Wed 19/810:00 a.m.
PHL
-
DEN
Nonstop4h 04m
United Airlines
Tue 1/95:54 p.m.
DEN
-
PHL
Nonstop3h 43m
United Airlines
Deal found 14/4C$ 310
Tue 12/55:50 a.m.
PHL
-
DEN
Nonstop4h 05m
Southwest
Tue 19/56:10 p.m.
DEN
-
PHL
Nonstop3h 45m
Southwest
Deal found 14/4C$ 313
Mon 18/57:45 p.m.
PHL
-
DEN
1 stop6h 59m
United Airlines
Sat 23/55:54 p.m.
DEN
-
PHL
Nonstop3h 36m
United Airlines
Deal found 16/4C$ 317

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 17 April 2026.

Round-trip from

C$ 287

One-way from

C$ 137

Popular in

March

Cheapest in

August

Average price

C$ 439

Good one-way deal

C$ 1,368 or less
United Airlines
  • United Airlines
  • 11/8-18/8
  • 1 total stop
  • 11h 51m total
  • Philadelphia to Denver
Search Deals
United Airlines
  • United Airlines
  • 26/8
  • Nonstop
  • 4h 04m total
  • Philadelphia to Denver
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 70 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
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 17 April 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
Quickest round-trip

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 12/5

5:50 a.m.-7:55 a.m.

Nonstop4h 05m

Denver Intl

Sun 17/5

7:45 p.m.-1:15 a.m.

Nonstop3h 30m

C$ 422

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 1/5

1:35 p.m.-3:40 p.m.

Nonstop4h 05m

Denver Intl

Tue 5/5

6:10 p.m.-11:55 p.m.

Nonstop3h 45m

C$ 422

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Mon 25/5

5:45 a.m.-10:20 a.m.

1 stop6h 35m

Denver Intl

Wed 3/6

4:41 p.m.-12:57 a.m.

1 stop6h 16m

C$ 498

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sun 3/5

5:50 a.m.-12:25 p.m.

2 stops8h 35m

Denver Intl

Wed 6/5

8:40 a.m.-4:50 p.m.

2 stops6h 10m

C$ 539

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 9/6

12:55 p.m.-8:00 p.m.

2 stops9h 05m

Denver Intl

Sun 14/6

7:50 a.m.-7:35 p.m.

2 stops9h 45m

C$ 588

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Mon 25/5

6:12 a.m.-9:43 a.m.

1 stop5h 31m

Denver Intl

Fri 5/6

6:00 a.m.-2:49 p.m.

1 stop6h 49m

C$ 608

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 1/10

8:00 p.m.-11:55 p.m.

1 stop5h 55m

Denver Intl

Tue 6/10

6:00 a.m.-1:51 p.m.

1 stop5h 51m

C$ 671

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 25/6

5:22 p.m.-10:53 p.m.

1 stop7h 31m

Denver Intl

Fri 3/7

6:00 a.m.-3:03 p.m.

1 stop7h 03m

C$ 671

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Mon 4/5

11:10 a.m.-6:35 p.m.

2 stops9h 25m

Denver Intl

Mon 11/5

12:55 p.m.-10:45 p.m.

2 stops7h 50m

C$ 678

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 30/7

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

2 stops9h 55m

Denver Intl

Mon 3/8

7:00 a.m.-5:50 p.m.

2 stops8h 50m

C$ 684

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

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?

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to Denver. Price data was last updated on 10 April 2026.

To ensure you get the cheapest price possible for a flight from Philadelphia to Denver, you should look to book at least 28 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$ 381). Flying from Philadelphia to Denver in March is currently the most expensive (average of C$ 587). 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 17 April 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 and Delta fly from Philadelphia to Denver in about 4h 05m. The time it takes to get you to your destination can typically vary by up to 3h 56m. 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 Qatar Airways (87%), Air Canada (84%) or United Airlines (82%) 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$ 2,185, our data shows the cheapest flight currently is C$ 1,368. When looking at the most popular route, (Philadelphia - Denver Intl), you can expect to pay C$ 218 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$ 381). Flying from Philadelphia to Denver in March is currently the most expensive (average of C$ 587). 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

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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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