Find flights
Deals
When to book
FAQs

Cheap flights from Philadelphia to Denver from £121

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 28/9. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — DEN
24 Aug — 31 Aug1
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 25 July 2026.

Thu 12/1106:00
PHL
-
DEN
1 stop8h 03m
JetBlue
Tue 17/1113:00
DEN
-
PHL
1 stop7h 36m
JetBlue
Deal found 24/7£176
Fri 23/1006:00
PHL
-
DEN
1 stop9h 03m
JetBlue
Mon 2/1113:00
DEN
-
PHL
1 stop7h 36m
JetBlue
Deal found 21/7£178
Thu 22/1006:00
PHL
-
DEN
1 stop9h 10m
JetBlue
Mon 26/1013:00
DEN
-
PHL
1 stop7h 36m
JetBlue
Deal found 23/7£179
Mon 26/1010:30
PHL
-
DEN
1 stop8h 34m
JetBlue
Tue 3/1113:00
DEN
-
PHL
1 stop7h 36m
JetBlue
Deal found 21/7£202
Wed 4/1106:00
PHL
-
DEN
1 stop8h 03m
JetBlue
Mon 9/1113:00
DEN
-
PHL
1 stop7h 36m
JetBlue
Deal found 23/7£209
Mon 26/1010:30
PHL
-
DEN
1 stop8h 34m
JetBlue
Sat 31/1013:00
DEN
-
PHL
1 stop7h 36m
JetBlue
Deal found 21/7£213
Fri 23/1006:00
PHL
-
DEN
1 stop9h 03m
JetBlue
Fri 30/1013:00
DEN
-
PHL
1 stop7h 36m
JetBlue
Deal found 21/7£219
Tue 27/1006:00
PHL
-
DEN
1 stop8h 03m
JetBlue
Thu 29/1013:00
DEN
-
PHL
1 stop7h 36m
JetBlue
Deal found 21/7£231
Fri 23/1006:00
PHL
-
DEN
1 stop9h 03m
JetBlue
Mon 26/1013:00
DEN
-
PHL
1 stop7h 36m
JetBlue
Deal found 25/7£234
Sat 14/1105:20
PHL
-
DEN
Nonstop4h 20m
Southwest
Wed 18/1110:50
DEN
-
PHL
Nonstop3h 20m
Southwest
Deal found 22/7£241
Thu 22/1006:00
PHL
-
DEN
1 stop9h 10m
JetBlue
Thu 29/1013:00
DEN
-
PHL
1 stop7h 36m
JetBlue
Deal found 21/7£242

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 25 July 2026.

Round-trip from

£176

One-way from

£121

Popular in

June

Cheapest in

January

Average price

£287

Good one-way deal

£977 or less
JetBlue
  • JetBlue
  • 12/11-17/11
  • 2 total stops
  • 15h 39m total
  • Philadelphia to Denver
Search Deals
Southwest
  • Southwest
  • 24/9
  • Nonstop
  • 4h 00m total
  • Philadelphia to Denver
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£21 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 25 July 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

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Mon 31/8

15:48-17:55

Nonstop4h 07m

Denver Intl

Thu 3/9

18:01-23:44

Nonstop3h 43m

£241

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 22/8

08:05-13:05

2 stops7h 00m

Denver Intl

Tue 25/8

11:15-21:45

2 stops8h 30m

£263

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 10/9

05:55-13:45

2 stops9h 50m

Denver Intl

Mon 21/9

07:00-16:00

2 stops7h 00m

£277

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Mon 23/11

07:45-10:04

Nonstop4h 19m

Denver Intl

Fri 27/11

18:15-23:46

Nonstop3h 31m

£281
Fastest return journey

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Sat 31/10

05:25-07:30

Nonstop4h 05m

Denver Intl

Sun 1/11

18:45-00:05

Nonstop3h 20m

£283

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 30/10

07:45-10:04

Nonstop4h 19m

Denver Intl

Sun 1/11

18:15-23:46

Nonstop3h 31m

£289

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Thu 19/11

05:30-11:54

1 stop8h 24m

Denver Intl

Mon 23/11

16:00-23:40

1 stop5h 40m

£297

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 21/8

12:45-19:20

2 stops8h 35m

Denver Intl

Mon 24/8

07:00-17:55

2 stops8h 55m

£302

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Fri 16/10

17:10-01:35

2 stops10h 25m

Denver Intl

Wed 21/10

06:35-16:15

2 stops7h 40m

£302

PhiladelphiaDenver

PHL - DEN

PHLDEN

Philadelphia

Wed 19/8

13:45-19:45

2 stops8h 00m

Denver Intl

Fri 21/8

07:00-17:55

2 stops8h 55m

£302

Flights are sorted by cheapest return flights first.

Deals found on 21/7

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

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, January is the cheapest month in which you can book a flight from Philadelphia to Denver (average of £231). Flying from Philadelphia to Denver in June is currently the most expensive (average of £354). 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 25 July 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?

Airfare is below average for this route at the moment.

Philadelphia to Denver flights typically cost between £202 and £355 in November.
The cheapest return price found within the last 5 days was £176 on JetBlue (12 Nov–17 Nov).

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 United Airlines and Southwest fly from Philadelphia to Denver in about 4h 07m. The time it takes to get you to your destination can typically vary by up to 2h 53m. 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: United Airlines (83%), Volaris (79%), Air Canada (77%).

  • What are the cheapest flights from Philadelphia to Denver?

    Looking for the cheapest flight from Philadelphia to Denver? While on average our users pay £977, our data indicates the cheapest price to be £977. The most popular route (Philadelphia - Denver Intl), is priced around £263.

  • 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 £231). Flying from Philadelphia to Denver in June is currently the most expensive (average of £354). 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
John F Kennedy Intl to Denver flights
LaGuardia 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.