Denver (DEN) to Philadelphia (PHL) flights
American Airlines, United Airlines, Southwest Airlines, Frontier Airlines fly nonstop from Denver International Airport to Philadelphia International Airport, with about 76 flights a week in July 2026. The 1,558-mile flight takes about 3h 29m gate to gate.
- Distance
- 1,558 mi · 2,507 km
- Flight time
- 3h 29m
- Airlines
- 4
- Seats filled
- 86%
Airlines flying DEN to PHL
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| American Airlines | 25 | Airbus A321, Boeing 737-800, Boeing 737 MAX 8 | 133,366 | 3h 29m |
| United Airlines | 21 | Boeing 737-800, Boeing 737 MAX 9, Boeing 737 MAX 8 | 139,783 | 3h 31m |
| Southwest Airlines | 20 | Boeing 737 MAX 8, Boeing 737-800, Boeing 737-700 / MAX 7 | 134,327 | 3h 25m |
| Frontier Airlines | 10 | Airbus A321, Airbus A320neo, Airbus A320-100/200 | 51,256 | 3h 34m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
DEN to PHL flight schedule
18 flight numbers flew this route in August 2026, 9 of them almost daily. The first usually leaves at 6:05am and the last at 11:59pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| F9 2514Frontier Airlines | 6:05am | 11:49am | 16 | 91% |
| AA 516American Airlines | 8:00am | 1:43pm | 27 | 87% |
| AA 2344American Airlines | 8:46am | 2:21pm | 4 | 88% |
| UA 1575United Airlines | 10:05am | 3:48pm | 31 | 87% |
| AA 2491American Airlines | 10:29am | 4:14pm | 23 | 79% |
| WN 1622Southwest Airlines | 11:15am | 4:45pm | 28 | 50% |
| AA 1751American Airlines | 12:49pm | 6:35pm | 4 | 67% |
| AA 811American Airlines | 12:50pm | 6:35pm | 27 | 63% |
| UA 2787United Airlines | 1:45pm | 7:25pm | 19 | 63% |
| WN 4462Southwest Airlines | 2:40pm | 8:10pm | 4 | n/a |
| AA 814American Airlines | 3:13pm | 8:56pm | 20 | 63% |
| WN 686Southwest Airlines | 3:15pm | 8:45pm | 4 | n/a |
| WN 639Southwest Airlines | 3:35pm | 9:05pm | 12 | 50% |
| WN 4971Southwest Airlines | 6:00pm | 11:45pm | 20 | 37% |
| UA 1510United Airlines | 6:01pm | 11:44pm | 31 | 55% |
| WN 1624Southwest Airlines | 6:10pm | 11:50pm | 16 | 25% |
| F9 3340Frontier Airlines | 11:59pm | 5:39am | 24 | 61% |
| UA 1214United Airlines | 11:59pm | 5:31am | 10 | 80% |
Is DEN to PHL on time?
From September 2025 to August 2026, 73% of 3,056 flights arrived within 15 minutes of schedule and 1.4% were cancelled. Flights leaving around 7am were the most punctual (90%), those around 2pm the least (67%). Most delay time was caused by late-arriving aircraft (44%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 952 | 79% | 16 min | 0.5% |
| American Airlines | 925 | 79% | 25 min | 2.2% |
| Southwest Airlines | 880 | 61% | 25 min | 0.9% |
| Frontier Airlines | 299 | 68% | 33 min | 3.7% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 6am to 7am | 105 | 89% | |
| 7am to 8am | 155 | 90% | |
| 8am to 9am | 176 | 86% | |
| 9am to 10am | 125 | 82% | |
| 10am to 11am | 501 | 84% | |
| 11am to 12pm | 122 | 72% | |
| 12pm to 1pm | 278 | 72% | |
| 1pm to 2pm | 221 | 76% | |
| 2pm to 3pm | 201 | 67% | |
| 3pm to 4pm | 72 | 62% | |
| 5pm to 6pm | 436 | 69% | |
| 6pm to 7pm | 135 | 43% | |
| 7pm to 8pm | 128 | 39% | |
| 11pm to 12am | 361 | 69% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 306 | 50,440 | |
| September 2025 | 283 | 44,680 | |
| October 2025 | 249 | 39,729 | |
| November 2025 | 238 | 35,978 | |
| December 2025 | 230 | 33,736 | |
| January 2026 | 169 | 24,361 | |
| February 2026 | 165 | 23,702 | |
| March 2026 | 204 | 31,552 | |
| April 2026 | 225 | 34,455 | |
| May 2026 | 275 | 41,335 | |
| June 2026 | 315 | 47,392 | |
| July 2026 | 336 | 51,372 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.