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Cheap flights from Philadelphia to Denver from C$ 154

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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
19 Feb — 26 Feb1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Philadelphia to Denver Intl are usually found in July or August, booked 89 days in advance, depart on a Wednesday or Friday 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 20 January 2026.

Tue 3/33:37 p.m.
PHL
-
DEN
Nonstop4h 30m
United Airlines
Wed 4/35:57 p.m.
DEN
-
PHL
Nonstop3h 33m
United Airlines
Deal found 19/1C$ 279
Tue 17/25:00 a.m.
PHL
-
DEN
Nonstop4h 20m
Southwest
Sat 21/211:15 a.m.
DEN
-
PHL
Nonstop3h 30m
Southwest
Deal found 19/1C$ 293
Tue 24/25:00 p.m.
PHL
-
DEN
Nonstop4h 20m
Southwest
Mon 9/37:30 p.m.
DEN
-
PHL
Nonstop3h 25m
Southwest
Deal found 19/1C$ 304
Mon 16/37:00 a.m.
PHL
-
DEN
1 stop10h 10m
JetBlue
Wed 18/310:39 p.m.
DEN
-
PHL
1 stop8h 25m
JetBlue
Deal found 20/1C$ 307
Sun 1/36:05 a.m.
PHL
-
DEN
Nonstop4h 25m
Southwest
Tue 31/36:30 p.m.
DEN
-
PHL
Nonstop3h 20m
Southwest
Deal found 20/1C$ 317
Sat 21/25:40 p.m.
PHL
-
DEN
Nonstop4h 20m
Southwest
Tue 24/212:05 p.m.
DEN
-
PHL
1 stop6h 15m
Southwest
Deal found 19/1C$ 318
Tue 17/211:30 a.m.
PHL
-
DEN
1 stop7h 09m
Delta
Tue 24/26:00 a.m.
DEN
-
PHL
1 stop7h 50m
Delta
Deal found 18/1C$ 329
Tue 31/36:00 a.m.
PHL
-
DEN
1 stop6h 32m
Delta
Tue 31/36:15 p.m.
DEN
-
PHL
1 stop9h 26m
Delta
Deal found 19/1C$ 332
Thu 19/25:00 a.m.
PHL
-
DEN
Nonstop4h 20m
Southwest
Sun 22/25:30 a.m.
DEN
-
PHL
1 stop7h 15m
Southwest
Deal found 20/1C$ 343
Tue 31/35:30 a.m.
PHL
-
DEN
Nonstop4h 10m
Southwest
Thu 2/47:30 p.m.
DEN
-
PHL
Nonstop3h 25m
Southwest
Deal found 19/1C$ 344
Wed 13/58:25 a.m.
PHL
-
DEN
1 stop9h 05m
JetBlue
Sat 16/511:08 p.m.
DEN
-
PHL
1 stop6h 27m
JetBlue
Deal found 20/1C$ 346
Sun 22/24:59 p.m.
PHL
-
DEN
1 stop9h 24m
Delta
Fri 27/27:00 a.m.
DEN
-
PHL
1 stop8h 38m
Delta
Deal found 18/1C$ 357

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 20 January 2026.

Round-trip from

C$ 279

One-way from

C$ 154

Popular in

December

Cheapest in

July

Average price

C$ 457

Good round-trip deal

C$ 915 or less
United Airlines
  • United Airlines
  • 3/3-4/3
  • Nonstop
  • 8h 03m total
  • Philadelphia to Denver
Search Deals
United Airlines
  • United Airlines
  • 10/2
  • Nonstop
  • 4h 29m total
  • Philadelphia to Denver
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 20 January 2026.
Use the filters below to find and compare flights from Philadelphia to Denver that are best for you.

Fly from

Philadelphia

Fly to

Denver

Route

Depart

Return

Price

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 15/4

8:25 a.m.-3:30 p.m.

1 stop9h 05m

Denver Intl

Tue 21/4

11:08 p.m.-7:35 a.m.

1 stop6h 27m

C$ 346

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 26/2

6:05 a.m.-8:30 a.m.

Nonstop4h 25m

Denver Intl

Thu 5/3

11:05 a.m.-4:30 p.m.

Nonstop3h 25m

C$ 357

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 31/3

6:15 a.m.-9:50 a.m.

1 stop5h 35m

Denver Intl

Tue 31/3

6:30 p.m.-11:50 p.m.

Nonstop3h 20m

C$ 358

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 10/2

6:40 a.m.-9:05 a.m.

Nonstop4h 25m

Denver Intl

Sat 14/2

11:10 a.m.-9:10 p.m.

1 stop8h 00m

C$ 360

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 3/3

6:10 a.m.-3:30 p.m.

2 stops11h 20m

Denver Intl

Wed 4/3

9:10 a.m.-5:25 p.m.

1 stop6h 15m

C$ 364

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 25/3

5:30 a.m.-7:40 a.m.

Nonstop4h 10m

Denver Intl

Sat 28/3

7:00 p.m.-12:20 a.m.

Nonstop3h 20m

C$ 385

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 21/2

3:37 p.m.-6:07 p.m.

Nonstop4h 30m

Denver Intl

Wed 25/2

5:57 p.m.-11:30 p.m.

Nonstop3h 33m

C$ 404

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 21/2

12:10 p.m.-8:00 p.m.

2 stops9h 50m

Denver Intl

Tue 24/2

10:55 a.m.-8:20 p.m.

2 stops7h 25m

C$ 405

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 23/5

3:15 p.m.-9:39 p.m.

1 stop8h 24m

Denver Intl

Tue 26/5

10:34 p.m.-9:13 a.m.

1 stop8h 39m

C$ 428

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 23/5

3:15 p.m.-9:39 p.m.

1 stop8h 24m

Denver Intl

Wed 27/5

10:34 p.m.-9:13 a.m.

1 stop8h 39m

C$ 428

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/1

Showing 1-10 of 23 results
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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 16 January 2026.

To ensure you get the cheapest price possible for a flight from Philadelphia to Denver, you should look to book at least 55 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, October is the cheapest month in which you can book a flight from Philadelphia to Denver (average of C$ 122). Flying from Philadelphia to Denver in May is currently the most expensive (average of C$ 199). 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 20 January 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 62% versus a flight in the afternoon.

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 8 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 4h 20m. 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 (90%), Air Canada (84%) or Qatar Airways (80%) 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$ 933, our data shows the cheapest flight currently is C$ 609. When looking at the most popular route, (Philadelphia - Denver Intl), you can expect to pay C$ 408 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, October is the cheapest month in which you can book a flight from Philadelphia to Denver (average of C$ 122). Flying from Philadelphia to Denver in May is currently the most expensive (average of C$ 199). 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

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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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