Miami (MIA) to Dulles (IAD) flights
United Airlines, American Airlines fly nonstop from Miami International Airport to Washington Dulles International Airport, with about 9 flights a week in July 2026. The 922-mile flight takes about 2h 38m gate to gate.
- Distance
- 922 mi · 1,484 km
- Flight time
- 2h 38m
- Airlines
- 2
- Seats filled
- 84%
Airlines flying MIA to IAD
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 8 | Boeing 737-900ER, Boeing 737 MAX 9, Boeing 737-800 | 76,725 | 2h 37m |
| American Airlines | <1 | Boeing 737-800, Boeing 737 MAX 8, Airbus A321 | 1,976 | 3h 14m |
| Frontier AirlinesSeasonal or ended | n/a | Airbus A320neo, Airbus A321, Airbus A320-100/200 | 17,368 | 2h 37m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
MIA to IAD flight schedule
1 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 1:44pm and the last at 1:44pm. 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 2435United Airlines | 1:44pm | 4:17pm | 31 | 88% |
Is MIA to IAD on time?
From September 2025 to August 2026, 84% of 603 flights arrived within 15 minutes of schedule and 0.7% were cancelled. Flights leaving around 1pm were the most punctual (87%), those around 6pm the least (80%). Most delay time was caused by late-arriving aircraft (51%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 512 | 85% | 12 min | 0.4% |
| Frontier Airlines | 91 | 83% | 8 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 | 21 | 91% | |
| 10am to 11am | 13 | 75% | |
| 11am to 12pm | 38 | 87% | |
| 12pm to 1pm | 94 | 81% | |
| 1pm to 2pm | 288 | 87% | |
| 6pm to 7pm | 132 | 80% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 53 | 8,598 | |
| September 2025 | 48 | 6,652 | |
| October 2025 | 50 | 6,748 | |
| November 2025 | 47 | 7,229 | |
| December 2025 | 59 | 8,880 | |
| January 2026 | 73 | 11,365 | |
| February 2026 | 61 | 8,951 | |
| March 2026 | 65 | 9,811 | |
| April 2026 | 68 | 10,412 | |
| May 2026 | 47 | 6,911 | |
| June 2026 | 32 | 4,736 | |
| July 2026 | 38 | 5,965 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.