Dulles (IAD) to Miami (MIA) flights
United Airlines flies nonstop from Washington Dulles International Airport to Miami International Airport, with about 7 flights a week in July 2026. The 922-mile flight takes about 2h 49m gate to gate.
- Distance
- 922 mi · 1,484 km
- Flight time
- 2h 49m
- Airlines
- 1
- Seats filled
- 79%
Airlines flying IAD to MIA
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 7 | Boeing 737-900ER, Boeing 737-800, Boeing 737 MAX 9 | 72,296 | 2h 50m |
| Frontier AirlinesSeasonal or ended | n/a | Airbus A320neo, Airbus A321, Airbus A320-100/200 | 15,718 | 2h 45m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
IAD to MIA flight schedule
1 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 8:16am and the last at 8:16am. 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) |
|---|---|---|---|---|
| UA 1073United Airlines | 8:16am | 11:11am | 31 | 87% |
Is IAD to MIA on time?
From September 2025 to August 2026, 84% of 603 flights arrived within 15 minutes of schedule and 0.8% were cancelled. Flights leaving around 8am were the most punctual (88%), those around 3pm the least (78%). Most delay time was caused by air traffic control and airport congestion (51%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 512 | 86% | 9 min | 0.6% |
| Frontier Airlines | 91 | 73% | 17 min | 2.2% |
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 |
|---|---|---|---|
| 8am to 9am | 358 | 88% | |
| 1pm to 2pm | 140 | 83% | |
| 3pm to 4pm | 41 | 78% | |
| 5pm to 6pm | 13 | 69% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 53 | 6,906 | |
| September 2025 | 47 | 5,954 | |
| October 2025 | 50 | 6,933 | |
| November 2025 | 44 | 6,700 | |
| December 2025 | 58 | 9,698 | |
| January 2026 | 72 | 10,065 | |
| February 2026 | 62 | 8,500 | |
| March 2026 | 63 | 9,452 | |
| April 2026 | 68 | 8,674 | |
| May 2026 | 44 | 5,932 | |
| June 2026 | 30 | 4,531 | |
| July 2026 | 32 | 4,979 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.