SEA → MIA: cancellations & delays
Over Jan 2023 - Apr 2026, 1.0% of Seattle–Tacoma International Airport (SEA) to Miami International Airport (MIA) flights were cancelled and 23.2% arrived at least 15 minutes late, across 3,045 flights, flown by AA, AS, DL. Cancellations peak in January.
Check today's live SEA departures →Airport pages: Seattle–Tacoma International Airport (SEA) · Miami International Airport (MIA)
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.