MIA → IAD: cancellations & delays
Over Jan 2023 - Apr 2026, 1.2% of Miami International Airport (MIA) to Washington Dulles International Airport (IAD) flights were cancelled and 19.3% arrived at least 15 minutes late, across 1,823 flights, flown by UA, F9. Cancellations peak in June.
Check today's live MIA departures →Airport pages: Miami International Airport (MIA) · Washington Dulles International Airport (IAD)
Rates are historical averages from U.S. DOT (BTS) on-time records; a specific flight's live estimate can differ with weather and the day's disruptions.