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Cheap flights from Philadelphia to Denver from £88

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 4/12. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
13 Jul — 20 Jul1
1 adult
1 adult, Economy, 0 bags

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 13 June 2026.

Wed 26/808:28
PHL
-
DEN
1 stop6h 47m
JetBlue
Thu 27/823:37
DEN
-
PHL
1 stop6h 45m
JetBlue
Deal found 9/6£152
Tue 18/817:10
PHL
-
DEN
Nonstop4h 00m
Southwest
Wed 26/818:10
DEN
-
PHL
Nonstop3h 40m
Southwest
Deal found 8/6£154
Tue 11/817:10
PHL
-
DEN
Nonstop4h 00m
Southwest
Tue 18/806:35
DEN
-
PHL
1 stop5h 30m
Southwest
Deal found 9/6£161
Tue 20/1006:16
PHL
-
DEN
1 stop6h 56m
United Airlines
Tue 27/1017:25
DEN
-
PHL
Nonstop3h 21m
United Airlines
Deal found 11/6£162
Thu 27/808:28
PHL
-
DEN
1 stop6h 47m
JetBlue
Sat 5/909:44
DEN
-
PHL
1 stop8h 16m
JetBlue
Deal found 10/6£163
Wed 16/907:15
PHL
-
DEN
2 stops9h 30m
Southwest
Tue 29/918:10
DEN
-
PHL
Nonstop3h 40m
Southwest
Deal found 9/6£166
Wed 5/818:40
PHL
-
DEN
1 stop5h 50m
Southwest
Wed 12/806:30
DEN
-
PHL
1 stop5h 50m
Southwest
Deal found 9/6£169
Fri 28/808:28
PHL
-
DEN
1 stop6h 47m
JetBlue
Sat 5/909:44
DEN
-
PHL
1 stop8h 16m
JetBlue
Deal found 10/6£169
Sat 26/906:30
PHL
-
DEN
Nonstop3h 50m
Southwest
Wed 30/918:10
DEN
-
PHL
Nonstop3h 40m
Southwest
Deal found 9/6£170
Tue 18/818:40
PHL
-
DEN
1 stop5h 50m
Southwest
Wed 19/811:15
DEN
-
PHL
2 stops7h 40m
Southwest
Deal found 8/6£172
Wed 7/1012:50
PHL
-
DEN
1 stop11h 05m
Southwest
Wed 14/1006:35
DEN
-
PHL
1 stop4h 55m
Southwest
Deal found 10/6£173

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 13 June 2026.

Round-trip from

£152

One-way from

£88

Popular in

June

Cheapest in

August

Average price

£335

Good one-way deal

£970 or less
JetBlue
  • JetBlue
  • 26/8-5/9
  • 2 total stops
  • 15h 03m total
  • Philadelphia to Denver
Search Deals
JetBlue
  • JetBlue
  • 4/12
  • 1 total stop
  • 8h 27m total
  • Philadelphia to Denver
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£13 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a one-way flight from Philadelphia to Denver Intl.
Search Deals

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 13 June 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 return flight
Fastest return journey

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 19/8

06:00-07:55

Nonstop3h 55m

Denver Intl

Wed 26/8

18:10-23:50

Nonstop3h 40m

£154

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 20/10

06:16-11:12

1 stop6h 56m

Denver Intl

Tue 27/10

17:25-22:46

Nonstop3h 21m

£162

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 1/10

10:05-12:10

Nonstop4h 05m

Denver Intl

Mon 5/10

23:52-09:42

1 stop7h 50m

£193

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 8/9

13:45-19:45

2 stops8h 00m

Denver Intl

Sat 19/9

05:45-13:30

1 stop5h 45m

£201

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Tue 25/8

07:15-14:45

2 stops9h 30m

Denver Intl

Sat 29/8

05:45-13:30

1 stop5h 45m

£204

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 7/10

17:12-00:23

1 stop9h 11m

Denver Intl

Wed 14/10

00:55-08:41

1 stop5h 46m

£205

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 12/8

15:00-19:45

2 stops6h 45m

Denver Intl

Sun 16/8

07:25-15:55

1 stop6h 30m

£249

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sun 16/8

06:05-09:52

1 stop5h 47m

Denver Intl

Fri 21/8

00:59-08:36

1 stop5h 37m

£261

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 19/11

06:15-12:03

1 stop7h 48m

Denver Intl

Mon 23/11

18:25-05:41

1 stop9h 16m

£261

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 10/10

07:15-15:00

2 stops9h 45m

Denver Intl

Mon 12/10

20:45-11:00

1 stop12h 15m

£288

Flights are sorted by cheapest return flights first.

Deals found on 10/6

Showing 1-10 of 24 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 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?

Booking 27 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, August is the cheapest month in which you can book a flight from Philadelphia to Denver (average of £219). Flying from Philadelphia to Denver in June is currently the most expensive (average of £335). 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 13 June 2026.

It’s optimal to fly from Philadelphia to Denver in the afternoon. By choosing this option you can save up to 72% on the cost of your flight, compared to a flight in the morning.

How much does it cost for a return flight 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?

    Flights from Philadelphia to Denver Intl have been viewed 1 times in the past calendar month.

  • How long is the flight from Philadelphia to Denver?

    Airlines like Delta and Southwest fly from Philadelphia to Denver in about 5h 40m. The time it takes to get you to your destination can typically vary by up to 3h 31m. Philadelphia and Denver are separated by a distance of 1553 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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: Aer Lingus (100%), Air Canada (89%), British Airways (82%).

  • What are the cheapest flights from Philadelphia to Denver?

    Looking for the cheapest flight from Philadelphia to Denver? While on average our users pay £970, our data indicates the cheapest price to be £970. The most popular route (Philadelphia - Denver Intl), is priced around £289.

  • 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, August is the cheapest month in which you can book a flight from Philadelphia to Denver (average of £219). Flying from Philadelphia to Denver in June is currently the most expensive (average of £335). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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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