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Cheap flights from Philadelphia to Denver from C$ 231

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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
17 Aug — 24 Aug1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Philadelphia to Denver Intl are usually found in January or October, 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 18 July 2026.

Fri 18/95:28 p.m.
PHL
-
DEN
2 stops17h 04m
Frontier
Mon 21/911:59 p.m.
DEN
-
PHL
1 stop11h 13m
Frontier
Deal found 18/7C$ 348
Tue 3/1110:30 a.m.
PHL
-
DEN
1 stop8h 34m
JetBlue
Sat 7/111:00 p.m.
DEN
-
PHL
1 stop7h 36m
JetBlue
Deal found 15/7C$ 377
Thu 29/1010:30 a.m.
PHL
-
DEN
1 stop8h 34m
JetBlue
Sat 7/111:00 p.m.
DEN
-
PHL
1 stop7h 36m
JetBlue
Deal found 15/7C$ 398
Sun 1/116:00 a.m.
PHL
-
DEN
1 stop8h 03m
JetBlue
Thu 5/111:00 p.m.
DEN
-
PHL
1 stop7h 36m
JetBlue
Deal found 15/7C$ 410
Sat 24/106:00 a.m.
PHL
-
DEN
1 stop7h 55m
JetBlue
Mon 26/101:00 p.m.
DEN
-
PHL
1 stop7h 36m
JetBlue
Deal found 14/7C$ 439
Mon 12/106:00 a.m.
PHL
-
DEN
1 stop7h 55m
JetBlue
Fri 23/1012:59 p.m.
DEN
-
PHL
1 stop7h 44m
JetBlue
Deal found 14/7C$ 450
Thu 29/1010:30 a.m.
PHL
-
DEN
1 stop8h 34m
JetBlue
Mon 2/111:00 p.m.
DEN
-
PHL
1 stop7h 36m
JetBlue
Deal found 15/7C$ 453
Tue 3/115:05 a.m.
PHL
-
DEN
Nonstop4h 20m
Southwest
Wed 11/115:55 p.m.
DEN
-
PHL
Nonstop3h 25m
Southwest
Deal found 13/7C$ 461
Fri 30/1012:35 p.m.
PHL
-
DEN
Nonstop4h 05m
Southwest
Sat 7/1111:45 a.m.
DEN
-
PHL
Nonstop3h 25m
Southwest
Deal found 13/7C$ 464
Tue 6/105:10 p.m.
PHL
-
DEN
Nonstop4h 05m
Southwest
Tue 13/1011:15 a.m.
DEN
-
PHL
Nonstop3h 30m
Southwest
Deal found 17/7C$ 467
Tue 25/86:16 a.m.
PHL
-
DEN
1 stop6h 54m
United Airlines
Sat 29/81:45 p.m.
DEN
-
PHL
Nonstop3h 40m
United Airlines
Deal found 13/7C$ 470

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 18 July 2026.

Round-trip from

C$ 348

One-way from

C$ 231

Popular in

June

Cheapest in

January

Average price

C$ 512

Good round-trip deal

C$ 1,035 or less
Frontier
  • Frontier
  • 18/9-21/9
  • 3 total stops
  • 28h 17m total
  • Philadelphia to Denver
Search Deals
Southwest
  • Southwest
  • 27/8
  • Nonstop
  • 3h 50m total
  • Philadelphia to Denver
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 71 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Philadelphia to Denver Intl.
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 18 July 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 4/11

10:30 a.m.-5:04 p.m.

1 stop8h 34m

Denver Intl

Mon 9/11

1:00 p.m.-10:36 p.m.

1 stop7h 36m

C$ 377

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 22/8

1:49 p.m.-7:52 p.m.

1 stop8h 03m

Denver Intl

Sat 29/8

7:19 a.m.-4:11 p.m.

1 stop6h 52m

C$ 489

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 11/8

5:15 a.m.-11:25 a.m.

1 stop8h 10m

Denver Intl

Thu 20/8

4:33 p.m.-1:19 a.m.

1 stop6h 46m

C$ 489

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 10/10

4:00 p.m.-10:34 p.m.

1 stop8h 34m

Denver Intl

Sat 17/10

6:10 a.m.-4:35 p.m.

1 stop8h 25m

C$ 489

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 2/9

7:55 a.m.-1:20 p.m.

2 stops7h 25m

Denver Intl

Sun 6/9

12:35 p.m.-10:05 p.m.

2 stops7h 30m

C$ 503

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 12/8

10:45 a.m.-5:15 p.m.

2 stops8h 30m

Denver Intl

Sat 15/8

6:20 p.m.-11:10 a.m.

2 stops14h 50m

C$ 512

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 20/11

7:29 p.m.-12:23 a.m.

1 stop6h 54m

Denver Intl

Mon 23/11

4:00 p.m.-11:40 p.m.

1 stop5h 40m

C$ 554
Quickest round-trip

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sun 8/11

7:25 p.m.-11:10 p.m.

1 stop5h 45m

Denver Intl

Thu 12/11

11:15 a.m.-4:35 p.m.

Nonstop3h 20m

C$ 560

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 29/10

8:15 p.m.-12:20 a.m.

1 stop6h 05m

Denver Intl

Sun 1/11

11:15 a.m.-4:35 p.m.

Nonstop3h 20m

C$ 560

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 13/1

11:50 a.m.-5:30 p.m.

1 stop7h 40m

Denver Intl

Sun 17/1

6:25 a.m.-4:25 p.m.

2 stops8h 00m

C$ 564

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/7

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, January is the cheapest month in which you can book a flight from Philadelphia to Denver (average of C$ 432). Flying from Philadelphia to Denver in June is currently the most expensive (average of C$ 661). 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 18 July 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 45% versus a flight in the morning.

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 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 JetBlue, Southwest, and Delta fly from Philadelphia to Denver in about 4h. The time it takes to get you to your destination can typically vary by up to 4h 34m. 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 United Airlines (83%), Volaris (79%) or Air Canada (77%) 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$ 1,035, our data shows the cheapest flight currently is C$ 1,035. When looking at the most popular route, (Philadelphia - Denver Intl), you can expect to pay C$ 464 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$ 432). Flying from Philadelphia to Denver in June is currently the most expensive (average of C$ 661). 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

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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