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Cheap flights from Philadelphia to Denver from £82

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 26/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
31 Mar — 7 Apr1
1 adult

Cheapflights Tip: The best prices from Philadelphia to Denver Intl are usually found in September or May, booked 56 days in advance, depart on a Monday or Tuesday 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 26 March 2025.

Round-trip from

£152

One-way from

£82

Popular in

December

Cheapest in

September

Average price

£260
Southwest
  • Southwest
  • 1/5-6/5
  • 1 total stop
  • 11h 05m total
  • Philadelphia to Denver
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United Airlines
  • United Airlines
  • 26/4
  • Nonstop
  • 4h 17m total
  • Philadelphia to Denver
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Highest demand for flights based on searches. 8% potential increase in price (£16 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£6 potential savings vs. average return price).
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Average for round-trip flights in March 2025
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Find flight deals from Philadelphia to Denver

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 26 March 2025.

Thu 1/509:45PHL - DEN
Nonstop4h 17mUnited Airlines
Thu 1/523:59DEN - PHL
Nonstop3h 36mUnited Airlines
Deal found 26/3£132
Thu 1/518:55PHL - DEN
1 stop6h 10mSouthwest
Wed 7/517:30DEN - PHL
Nonstop3h 35mSouthwest
Deal found 24/3£152
Sat 3/506:00PHL - DEN
1 stop9h 06mJetBlue
Sun 4/522:39DEN - PHL
1 stop9h 01mJetBlue
Deal found 24/3£162
Fri 9/518:42PHL - DEN
Nonstop4h 27mFrontier
Fri 16/512:00DEN - PHL
Nonstop3h 37mFrontier
Deal found 25/3£162
Mon 28/406:00PHL - DEN
1 stop5h 32mDelta
Mon 5/515:35DEN - PHL
1 stop7h 14mDelta
Deal found 24/3£199
Thu 29/512:21PHL - DEN
1 stop7h 06mSun Country Air
Sun 1/609:26DEN - PHL
1 stop23h 39mSun Country Air
Deal found 25/3£255
Fri 9/507:35PHL - DEN
2 stops11h 52mMultiple Airlines
Fri 16/509:00DEN - PHL
2 stops20h 48mMultiple Airlines
Deal found 25/3£279

Cheapflights Fare Finder

Customise 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 858,174 searches. Data last updated 26 March 2025.
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

Thu 1/5

09:45-12:02

Nonstop4h 17m

Denver Intl

Thu 1/5

23:59-05:35

Nonstop3h 36m

£132

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 1/5

17:45-19:55

Nonstop4h 10m

Denver Intl

Tue 6/5

13:15-22:10

1 stop6h 55m

£152

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 3/5

06:00-13:06

1 stop9h 06m

Denver Intl

Sun 4/5

22:39-09:40

1 stop9h 01m

£162

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 9/5

18:42-21:09

Nonstop4h 27m

Denver Intl

Fri 16/5

12:00-17:37

Nonstop3h 37m

£162

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Mon 28/4

06:00-09:32

1 stop5h 32m

Denver Intl

Mon 5/5

15:35-00:49

1 stop7h 14m

£199

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 29/5

12:21-17:27

1 stop7h 06m

Denver Intl

Sun 1/6

09:26-11:05

1 stop23h 39m

£255

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 9/5

07:35-17:27

2 stops11h 52m

Denver Intl

Fri 16/5

09:00-07:48

2 stops20h 48m

£279

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 26/4

15:45-18:02

Nonstop4h 17m

£82

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 3/5

06:00-13:06

1 stop9h 06m

£89

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 12/7

19:10-23:25

1 stop6h 15m

£97

Flights are sorted by cheapest return flights first.

Deals found on 25/3

Showing 1-10 of 13 results
1
2

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 return 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 return flight from Philadelphia to Denver. Price data was last updated on 21 March 2025.

Booking 56 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 £667). Flying from Philadelphia to Denver in July is currently the most expensive (average of £1,030). 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 26 March 2025.

It’s optimal to fly from Philadelphia to Denver in the evening. By choosing this option you can save up to 45% on the cost of your flight, compared to a flight in the afternoon.

Weekly flight availability from Philadelphia to Denver

Explore weekly flight availability from Philadelphia to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 26 March 2025.

The most flights from PHL to DEN are scheduled on a Monday (16 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Denver by month

Plan your trip to Denver by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Denver ranges from 13.0 - 58.0 inches per month. May is typically the wettest month, when rainfall can reach 58.0 mm. January is typically the driest time to visit Denver when rainfall is around 13.0 mm.

Temperature in Denver by month

Plan your trip to Denver by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Denver, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated 26 March 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from Philadelphia to Denver have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very Good
4,273 reviews
Check prices

Comfort

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.6

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very Good
4,273 reviews
Southwest
8.1
Very Good
4,273 reviews
Check prices

Comfort

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.6

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very Good
9,795 reviews
Southwest
8.1
Very Good
4,273 reviews
Check prices

Comfort

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.6

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very Good
7,891 reviews
Southwest
8.1
Very Good
4,273 reviews
Check prices

Comfort

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.6

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,608 reviews
Southwest
8.1
Very Good
4,273 reviews
Check prices

Comfort

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.6

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
JetBlue
7.3
Good
2,923 reviews
Southwest
8.1
Very Good
4,273 reviews
Check prices

Comfort

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Crew

8.6

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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?

    Flights from Philadelphia to Denver Intl have been viewed 10 times in the past calendar month.

  • What are the cheapest airlines flying from Philadelphia to Denver round-trip?

    Southwest, at £152, was found to be the cheapest airline from Philadelphia to Denver.Alternate airlines flying return to your destination include United Airlines and JetBlue. Southwest is currently priced 33% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Philadelphia to Denver one-way?

    One-way options have recently been found by users for as low as £82 on United Airlines. Other airlines that offer cheap prices include JetBlue from £89 and Southwest from £97 one-way.

  • What are the most reliable airlines from Philadelphia to Denver?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Philadelphia to Denver on time: Air Canada (88%), United Airlines (88%), Qatar Airways (85%).

  • 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 holiday 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 £667). Flying from Philadelphia to Denver in July is currently the most expensive (average of £1,030). 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 Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Winter Park
Frisco

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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.
Newark to Denver flights
LaGuardia to Denver flights
John F Kennedy Intl to Denver flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Deals for Philadelphia to Denver flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Philadelphia to Denver?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Philadelphia to Denver for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Philadelphia to Denver with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Philadelphia to Denver, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Philadelphia to Denver become cheaper?

Yes, Cheapflights offers price alerts on Philadelphia to Denver flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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