Denver (DEN) to Washington (DCA) flights
Frontier Airlines, United Airlines fly nonstop from Denver International Airport to Ronald Reagan Washington National Airport, with about 24 flights a week in July 2026. The 1,476-mile flight takes about 3h 18m gate to gate.
- Distance
- 1,476 mi · 2,375 km
- Flight time
- 3h 18m
- Airlines
- 2
- Seats filled
- 85%
Airlines flying DEN to DCA
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Frontier Airlines | 18 | Airbus A320neo, Airbus A320-100/200, Airbus A321 | 152,042 | 3h 18m |
| United Airlines | 6 | Airbus A321, Boeing 757-300, Boeing 737-800 | 66,912 | 3h 17m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
DEN to DCA flight schedule
4 flight numbers flew this route in August 2026, 4 of them almost daily. The first usually leaves at 7:30am and the last at 4:28pm. 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 686Frontier Airlines | 7:30am | 12:51pm | 27 | 93% |
| UA 789United Airlines | 9:35am | 3:06pm | 31 | 91% |
| F9 688Frontier Airlines | 11:25am | 4:59pm | 27 | 76% |
| F9 690Frontier Airlines | 4:28pm | 9:59pm | 31 | 66% |
Is DEN to DCA on time?
From September 2025 to August 2026, 81% of 1,347 flights arrived within 15 minutes of schedule and 0.7% were cancelled. Flights leaving around 7am were the most punctual (92%), those around 4pm the least (66%). Most delay time was caused by air traffic control and airport congestion (48%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Frontier Airlines | 983 | 78% | 17 min | 0.8% |
| United Airlines | 364 | 89% | 7 min | 0.3% |
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 | 61 | 97% | |
| 7am to 8am | 252 | 92% | |
| 9am to 10am | 364 | 89% | |
| 11am to 12pm | 312 | 76% | |
| 4pm to 5pm | 355 | 66% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 116 | 19,312 | |
| September 2025 | 112 | 18,768 | |
| October 2025 | 115 | 19,169 | |
| November 2025 | 112 | 18,002 | |
| December 2025 | 114 | 18,316 | |
| January 2026 | 111 | 16,939 | |
| February 2026 | 104 | 16,023 | |
| March 2026 | 113 | 18,637 | |
| April 2026 | 108 | 18,267 | |
| May 2026 | 117 | 19,379 | |
| June 2026 | 110 | 18,137 | |
| July 2026 | 107 | 18,153 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.