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Cheap flights from Philadelphia to Denver from £78

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 26/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
29 Jan — 5 Feb1
1 adult

The best prices from Philadelphia to Denver Intl are usually found in April or May, booked 56 days in advance, depart on a Monday or Tuesday and return on a Wednesday

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 24 January 2025.

Round-trip from

£153

One-way from

£78

Popular in

December

Cheapest in

April

Average price

£255
Southwest
  • Southwest
  • 2/3-11/3
  • Nonstop
  • 7h 55m total
  • Philadelphia to Denver
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United Airlines
  • United Airlines
  • 26/3
  • Nonstop
  • 4h 29m total
  • Philadelphia to Denver
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Highest demand for flights based on searches. 11% potential increase in price (£25 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£5 potential savings vs. average return price).
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Average for round-trip flights in January 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 24 January 2025.

Sun 2/306:40PHL - DEN
Nonstop4h 30mSouthwest
Tue 11/318:15DEN - PHL
Nonstop3h 25mSouthwest
Deal found 24/1£153
Mon 24/306:00PHL - DEN
1 stop8h 09mJetBlue
Fri 28/323:59DEN - PHL
1 stop7h 37mJetBlue
Deal found 24/1£170
Fri 1/812:05PHL - DEN
1 stop8h 10mSun Country Air
Sat 9/810:20DEN - PHL
1 stop22h 50mSun Country Air
Deal found 23/1£203
Wed 19/309:40PHL - DEN
Nonstop4h 29mUnited Airlines
Tue 25/317:45DEN - PHL
Nonstop3h 31mUnited Airlines
Deal found 23/1£208
Sat 22/217:15PHL - DEN
1 stop6h 45mDelta
Fri 28/216:54DEN - PHL
1 stop5h 55mDelta
Deal found 23/1£208
Mon 24/218:25PHL - DEN
2 stops21h 29mAlaska Airlines
Thu 27/219:55DEN - PHL
1 stop19h 30mAlaska Airlines
Deal found 23/1£371

Find flights from Philadelphia to Denver within your budget

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 24 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sun 2/3

06:40-09:10

Nonstop4h 30m

Denver Intl

Tue 11/3

18:15-23:40

Nonstop3h 25m

£153

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Mon 24/3

06:00-12:09

1 stop8h 09m

Denver Intl

Fri 28/3

23:59-09:36

1 stop7h 37m

£170

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 21/3

19:20-20:59

1 stop27h 39m

Denver Intl

Thu 27/3

19:00-11:02

1 stop14h 02m

£207

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 19/3

09:40-12:09

Nonstop4h 29m

Denver Intl

Tue 25/3

17:45-23:16

Nonstop3h 31m

£208

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 22/2

17:15-22:00

1 stop6h 45m

Denver Intl

Fri 28/2

16:54-00:49

1 stop5h 55m

£208

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Mon 24/2

18:25-13:54

2 stops21h 29m

Denver Intl

Thu 27/2

19:55-17:25

1 stop19h 30m

£371

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 26/3

09:40-12:09

Nonstop4h 29m

£78

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 25/3

06:00-12:09

1 stop8h 09m

£85

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 22/2

17:15-22:00

1 stop6h 45m

£105

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 21/3

19:20-20:59

1 stop27h 39m

£108

Flights are sorted by cheapest return flights first.

Deals found on 23/1

Showing 1-10 of 12 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.

Travel insights for flights from Philadelphia to Denver

Get recent, data-driven insights about flights from Philadelphia to Denver including ideal travel times, pricing trends, and more.

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 17 January 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 24 January 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 24 January 2025.

The most flights from PHL to DEN are scheduled on a Monday (13 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 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 24 January 2025.
See what other customers who have flown with Southwest, United 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
4,631 reviews
Check prices

Boarding

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very Good
4,631 reviews
Southwest
8.1
Very Good
4,631 reviews
Check prices

Boarding

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very Good
9,701 reviews
Southwest
8.1
Very Good
4,631 reviews
Check prices

Boarding

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very Good
8,502 reviews
Southwest
8.1
Very Good
4,631 reviews
Check prices

Boarding

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

JetBlue
7.4
Good
3,184 reviews
Southwest
8.1
Very Good
4,631 reviews
Check prices

Boarding

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,963 reviews
Southwest
8.1
Very Good
4,631 reviews
Check prices

Boarding

8.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 £153, was found to be the cheapest airline from Philadelphia to Denver.Alternate airlines flying return to your destination include JetBlue and Sun Country Air. Southwest is currently priced 36% 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 £78 on United Airlines. Other airlines that offer cheap prices include JetBlue from £85 and Delta from £105 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: Frontier (85%), Air Canada (85%), Southwest (76%).

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

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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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