Denver (DEN) to Raleigh/Durham (RDU) flights
United Airlines, Southwest Airlines, Frontier Airlines fly nonstop from Denver International Airport to Raleigh-Durham International Airport, with about 36 flights a week in July 2026. The 1,436-mile flight takes about 3h 15m gate to gate.
- Distance
- 1,436 mi · 2,311 km
- Flight time
- 3h 15m
- Airlines
- 3
- Seats filled
- 84%
Airlines flying DEN to RDU
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 14 | Boeing 737-900ER, Boeing 737-800, Boeing 737 MAX 9 | 107,582 | 3h 19m |
| Southwest Airlines | 14 | Boeing 737 MAX 8, Boeing 737-800, Boeing 737-700 / MAX 7 | 99,874 | 3h 10m |
| Frontier Airlines | 7 | Airbus A320neo, Airbus A321, Airbus A320-100/200 | 51,265 | 3h 16m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
DEN to RDU flight schedule
6 flight numbers flew this route in August 2026, 5 of them almost daily. The first usually leaves at 6:03am and the last at 6:50pm. 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 2440Frontier Airlines | 6:03am | 11:31am | 31 | 87% |
| UA 2269United Airlines | 9:50am | 3:17pm | 31 | 88% |
| WN 4696Southwest Airlines | 11:05am | 4:25pm | 26 | 65% |
| UA 2671United Airlines | 5:45pm | 11:16pm | 10 | 77% |
| UA 1706United Airlines | 5:55pm | 11:26pm | 21 | 62% |
| WN 4753Southwest Airlines | 6:50pm | 12:10am | 24 | 33% |
Is DEN to RDU on time?
From September 2025 to August 2026, 76% of 1,732 flights arrived within 15 minutes of schedule and 0.7% were cancelled. Flights leaving around 6am were the most punctual (94%), those around 7pm the least (35%). Most delay time was caused by late-arriving aircraft (51%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 727 | 82% | 13 min | 0.4% |
| Southwest Airlines | 709 | 65% | 20 min | 0.8% |
| Frontier Airlines | 296 | 87% | 8 min | 1% |
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 | 93 | 94% | |
| 9am to 10am | 382 | 88% | |
| 10am to 11am | 236 | 77% | |
| 11am to 12pm | 156 | 78% | |
| 12pm to 1pm | 53 | 79% | |
| 1pm to 2pm | 54 | 83% | |
| 4pm to 5pm | 61 | 85% | |
| 5pm to 6pm | 409 | 74% | |
| 6pm to 7pm | 97 | 55% | |
| 7pm to 8pm | 117 | 35% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 160 | 24,657 | |
| September 2025 | 133 | 20,463 | |
| October 2025 | 136 | 20,991 | |
| November 2025 | 137 | 19,255 | |
| December 2025 | 147 | 21,006 | |
| January 2026 | 131 | 18,573 | |
| February 2026 | 127 | 18,289 | |
| March 2026 | 148 | 22,745 | |
| April 2026 | 146 | 22,309 | |
| May 2026 | 154 | 23,255 | |
| June 2026 | 153 | 23,220 | |
| July 2026 | 159 | 24,083 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.