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Cheap flights from Philadelphia to Denver from C$ 152

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 23/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
11 Feb — 18 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 40 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap 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 12 January 2026.

Round-trip from

C$ 307

One-way from

C$ 152

Popular in

December

Cheapest in

July

Average price

C$ 458

Good round-trip deal

C$ 917 or less
JetBlue
  • JetBlue
  • 10/6-15/6
  • 2 total stops
  • 17h 03m total
  • Philadelphia to Denver
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Frontier
  • Frontier
  • 23/2
  • Nonstop
  • 4h 30m total
  • Philadelphia to Denver
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Highest demand for flights based on searches. 8% potential increase in price (C$ 57 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 12 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Philadelphia to Denver Intl.
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Find 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 12 January 2026.

Fri 20/36:00 a.m.PHL - DEN
1 stop8h 22mJetBlue
Mon 23/311:30 a.m.DEN - PHL
1 stop10h 12mJetBlue
Deal found 11/1C$ 307
Thu 26/26:45 p.m.PHL - DEN
Nonstop4h 20mSouthwest
Sat 28/25:25 p.m.DEN - PHL
Nonstop3h 25mSouthwest
Deal found 10/1C$ 330
Wed 4/26:40 a.m.PHL - DEN
Nonstop4h 25mSouthwest
Wed 11/210:50 a.m.DEN - PHL
Nonstop3h 30mSouthwest
Deal found 11/1C$ 338
Sat 21/25:40 p.m.PHL - DEN
Nonstop4h 20mSouthwest
Thu 26/29:30 a.m.DEN - PHL
1 stop6h 35mSouthwest
Deal found 11/1C$ 344
Sat 24/13:43 p.m.PHL - DEN
Nonstop4h 29mUnited Airlines
Sat 31/110:15 a.m.DEN - PHL
Nonstop3h 35mUnited Airlines
Deal found 10/1C$ 346
Sun 22/26:16 p.m.PHL - DEN
1 stop8h 07mDelta
Fri 27/23:07 p.m.DEN - PHL
1 stop6h 06mDelta
Deal found 10/1C$ 358
Sat 24/14:15 p.m.PHL - DEN
1 stop7h 10mSouthwest
Wed 28/110:50 a.m.DEN - PHL
Nonstop3h 30mSouthwest
Deal found 9/1C$ 360
Wed 28/16:40 a.m.PHL - DEN
Nonstop4h 25mSouthwest
Tue 3/27:00 a.m.DEN - PHL
2 stops8h 25mSouthwest
Deal found 9/1C$ 369
Thu 19/25:00 a.m.PHL - DEN
Nonstop4h 20mSouthwest
Mon 23/27:35 a.m.DEN - PHL
1 stop6h 55mSouthwest
Deal found 11/1C$ 371
Tue 10/212:15 p.m.PHL - DEN
2 stops9h 05mSouthwest
Wed 11/29:50 a.m.DEN - PHL
2 stops8h 30mSouthwest
Deal found 9/1C$ 373

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 12 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

Tue 10/2

3:43 p.m.-6:12 p.m.

Nonstop4h 29m

Denver Intl

Sat 14/2

5:50 p.m.-11:23 p.m.

Nonstop3h 33m

C$ 330

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Mon 9/2

5:00 a.m.-7:20 a.m.

Nonstop4h 20m

Denver Intl

Sun 15/2

4:50 p.m.-10:15 p.m.

Nonstop3h 25m

C$ 330

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 27/2

1:05 p.m.-3:25 p.m.

Nonstop4h 20m

Denver Intl

Tue 3/3

10:50 a.m.-4:20 p.m.

Nonstop3h 30m

C$ 330

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 4/2

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

Nonstop4h 25m

Denver Intl

Wed 11/2

10:50 a.m.-4:20 p.m.

Nonstop3h 30m

C$ 338

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sun 22/2

6:16 p.m.-12:23 a.m.

1 stop8h 07m

Denver Intl

Fri 27/2

3:07 p.m.-11:13 p.m.

1 stop6h 06m

C$ 358

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 19/2

5:00 a.m.-7:20 a.m.

Nonstop4h 20m

Denver Intl

Fri 27/2

5:50 p.m.-11:25 p.m.

Nonstop3h 35m

C$ 358

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Mon 9/2

5:00 a.m.-7:20 a.m.

Nonstop4h 20m

Denver Intl

Mon 9/2

4:50 p.m.-10:15 p.m.

Nonstop3h 25m

C$ 385

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 24/2

1:50 p.m.-9:20 p.m.

2 stops9h 30m

Denver Intl

Tue 24/3

7:50 a.m.-4:15 p.m.

2 stops6h 25m

C$ 401

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 13/3

8:00 a.m.-10:30 a.m.

Nonstop4h 30m

Denver Intl

Tue 17/3

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

Nonstop3h 33m

C$ 408

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 18/6

12:06 p.m.-9:17 a.m.

1 stop23h 11m

Denver Intl

Thu 25/6

7:43 p.m.-11:08 a.m.

1 stop13h 25m

C$ 412

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 22 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 9 January 2026.

To ensure you get the cheapest price possible for a flight from Philadelphia to Denver, you should look to book at least 40 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 12 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, United Airlines, and Delta fly from Philadelphia to Denver in about 4h 20m. The time it takes to get you to your destination can typically vary by up to 3h 47m. 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 (88%), Air Canada (84%) or Qatar Airways (69%) 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$ 935, our data shows the cheapest flight currently is C$ 611. When looking at the most popular route, (Philadelphia - Denver Intl), you can expect to pay C$ 448 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

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

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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.

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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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