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Cheap flights from Philadelphia to Denver from £119

PHL — DEN
3 Oct — 10 Oct1
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

Thu 1/1008:00 -
Nonstop4h 02m
Sat 10/1017:37 -
Nonstop3h 43m
Deal found 1/9£238
Sat 26/908:00 -
Nonstop4h 02m
Wed 30/908:51 -
1 stop7h 03m
Deal found 2/9£242
Wed 9/1209:55 -
Nonstop4h 20m
Mon 14/1209:48 -
1 stop6h 04m
Deal found 1/9£244
Tue 22/913:30 -
1 stop6h 55m
Tue 29/917:46 -
Nonstop3h 43m
Deal found 1/9£245
Fri 2/1015:55 -
Nonstop4h 12m
Sat 10/1017:37 -
Nonstop3h 43m
Deal found 2/9£247
Wed 14/1005:30 -
Nonstop4h 05m
Sat 17/1007:45 -
2 stops10h 20m
Deal found 31/8£249
Fri 2/1015:55 -
Nonstop4h 12m
Tue 6/1008:51 -
1 stop7h 03m
Deal found 2/9£251
Thu 24/1206:00 -
1 stop6h 05m
Tue 29/1215:51 -
1 stop5h 53m
Deal found 2/9£253
Sat 12/1209:55 -
Nonstop4h 20m
Wed 30/1217:25 -
Nonstop3h 34m
Deal found 2/9£253
Fri 13/1117:15 -
Nonstop4h 15m
Mon 16/1106:30 -
1 stop5h 30m
Deal found 1/9£254
Wed 23/908:00 -
Nonstop4h 05m
Mon 28/917:37 -
Nonstop3h 43m
Deal found 2/9£256
Tue 29/913:35 -
2 stops8h 10m
Tue 6/1006:35 -
1 stop6h 50m
Deal found 1/9£256

Find flight deals from Philadelphia to Denver

Round-trip from

£238

One-way from

£119

Popular in

June

Cheapest in

January

Average price

£285

Good one-way deal

£964 or less
United Airlines
  • United Airlines
  • 1/10-10/10
  • Nonstop
  • 7h 45m total
  • Philadelphia to Denver
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Southwest
  • Southwest
  • 3/11
  • Nonstop
  • 4h 20m total
  • Philadelphia to Denver
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£17 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
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Average for round-trip flights in September 2026
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Price to beat on a one-way flight from Philadelphia to Denver Intl.
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Cheapflights Fare Finder

 
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 Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Thu 29/10

10:00-12:20

Nonstop4h 20m

Denver Intl

Mon 2/11

14:00-19:31

Nonstop3h 31m

£238

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Wed 23/12

16:58-23:20

1 stop8h 22m

Denver Intl

Wed 30/12

23:59-05:31

Nonstop3h 32m

£276

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Fri 2/10

15:55-18:07

Nonstop4h 12m

Denver Intl

Sat 10/10

17:37-23:20

Nonstop3h 43m

£285

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Tue 13/10

06:00-11:25

2 stops7h 25m

Denver Intl

Tue 20/10

10:45-21:35

2 stops8h 50m

£293

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Thu 1/10

10:05-12:10

Nonstop4h 05m

Denver Intl

Tue 6/10

13:30-22:31

1 stop7h 01m

£293

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Thu 29/10

05:55-10:00

1 stop6h 05m

Denver Intl

Sun 1/11

18:45-00:05

Nonstop3h 20m

£293

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Sun 31/1

09:45-15:00

1 stop7h 15m

Denver Intl

Thu 4/2

09:35-17:38

1 stop6h 03m

£297

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Fri 16/10

17:10-01:40

2 stops10h 30m

Denver Intl

Sat 17/10

07:45-20:05

2 stops10h 20m

£307

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Fri 23/10

17:10-01:40

2 stops10h 30m

Denver Intl

Mon 26/10

12:50-23:15

2 stops8h 25m

£316

PhiladelphiaDenver

PHL Philadelphia - DEN Denver Intl

PHLDEN

Philadelphia

Thu 22/10

17:10-01:40

2 stops10h 30m

Denver Intl

Sun 25/10

12:30-01:00

2 stops10h 30m

£317

Flights are sorted by cheapest return flights first.

Deals found on 2/9

Showing 1-10 of 23 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

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, January is the cheapest month in which you can book a flight from Philadelphia to Denver (average of £225). Flying from Philadelphia to Denver in June is currently the most expensive (average of £348). 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?

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?

Airfare is typical for this route at the moment.

Philadelphia to Denver flights typically cost between £216 and £341 in October.
The cheapest return price found within the last 5 days was £238 on United Airlines (1 Oct–10 Oct).

Related info for your journey

  • 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 United Airlines and Southwest 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 6h 10m. 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: Volaris (75%), United Airlines (70%), Air Canada (66%).

  • What are the cheapest flights from Philadelphia to Denver?

    Looking for the cheapest flight from Philadelphia to Denver? While on average our users pay £964, our data indicates the cheapest price to be £964. The most popular route (Philadelphia - Denver Intl), is priced around £259.

  • 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 £225). Flying from Philadelphia to Denver in June is currently the most expensive (average of £348). 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

Alternative routes for Philadelphia to Denver

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

Fly with Cheapflights

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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