Denver International Airport
Denver, United StatesDEN / KDEN
International hub · 203 direct destinations · 6 runways · longest runway 16,001 ft
55 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Route
Denver → Philadelphia
DEN
DenverDenver International Airport
DenverDenver International AirportPHLPhiladelphiaPhiladelphia International Airport
PhiladelphiaPhiladelphia International Airport- Distance
- 1,553 mi
- Estimated flight time
- ~3h 40m
Philadelphia is currently 2 hours ahead of Denver.
Observed nonstop
How often does this route fly?
Frequency
Several times a day
On average around 5 flights a day, observed from October 2025 to September 2026.
- 5
- flights per day
- 9.5
- busiest month · Jun
- 3
- quietest month · Dec
- 3 hr 0 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 4Jan2026
- 3Feb
- 4Mar
- 4Apr
- 5May
- 9.5Jun
- 9Jul
- 7Aug
- 5Sep
- 5Oct2025
- 6Nov
- 3Dec
Airlines
Who flies it
United Airlinesall year
American Airlinesall year
Southwest Airlinesall year
Frontier Airlinesall year
Through the day
Departure times
Local time in Denver. Most departures between 10:00 and 13:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 4.5Mon
- 4.1Tue
- 4.2Wed
- 5Thu
- 5.4Fri
- 4.8Sat
- 5Sun
Fleet
Aircraft observed
- Boeing 737-800B73838%
- Boeing 737 MAX 8B38M22%
- Airbus A321A32112%
- Boeing 737 MAX 9B39M7%
- Airbus A320neoA20N4%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 4 | 83 |
|
| February 2026 | 3 | 80 |
|
| March 2026 | 4 | 108 |
|
| April 2026 | 4 | 122 |
|
| May 2026 | 5 | 145 |
|
| June 2026 | 9.5 | 213 |
|
| July 2026 | 9 | 229 |
|
| August 2026 | 7 | 184 |
|
| September 2026 | 5 | 146 |
|
| October 2025 | 5 | 140 |
|
| November 2025 | 6 | 148 |
|
| December 2025 | 3 | 94 |
|
Airlines observed on this route
From observed callsign routes on DEN-PHL - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from Denver: 203.
- Direct destinations observed from Philadelphia: 139.
The airports on this route
Philadelphia International Airport
Philadelphia, United StatesPHL / KPHL
Major airport · 139 direct destinations · 4 runways · longest runway 12,001 ft
77 °F · Partly cloudySource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
DEN ABELehigh Valley International AirportAllentown is about 55 mi from Philadelphia.View route →DEN EWRNewark Liberty International AirportNewark is about 80 mi from Philadelphia.View route →DEN BWIBaltimore/Washington International Thurgood Marshall AirportBaltimore is about 90 mi from Philadelphia.View route →
About the route from Denver to Philadelphia
The observed direct connection between Denver International Airport (DEN) and Philadelphia International Airport (PHL) covers approximately 1,553 mi. The estimated flight time is around 3h 40m. American Airlines, Frontier Airlines, Southwest Airlines and United Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Denver from Philadelphia by air?
- The great-circle distance between Denver International Airport and Philadelphia International Airport is approximately 1,553 mi.
- How long is the flight from Denver to Philadelphia?
- Based on the distance, the estimated flight time is about 3h 40m. This is an estimate, not a schedule.
- Is there a direct connection from Denver to Philadelphia?
- Yes, a direct connection between DEN and PHL has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: American Airlines, Frontier Airlines, Southwest Airlines and United Airlines.
- How often is there a flight from Denver to Philadelphia?
- On average around 5 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 1,692 observed flights. Mainly United Airlines, American Airlines, Southwest Airlines. That is an observation, not a timetable.
- What is the current time difference between Denver and Philadelphia?
- Philadelphia is currently 2 hours ahead of Denver.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.