Miami (MIA) departure delays
8,797 departures · 85 routes · March 2025 – August 2026
74.81%
Left on time
Within 15 minutes of schedule
0.78%
Cancelled
Share of departures
73 min
When late, late by
Average delayed departure
#72
Rank
Among graded US airports
What the record says about MIA
Departures from Miami run late more often than average — enough that a tight connection at the far end deserves a second look.
The airlines flying from here are not equally affected. Virgin Atlantic left on time 19 points more often than Southwest Airlines from the same airport — which is the clearest evidence available that a delayed departure is not purely the airport's fault.
With 40 routes in the record, MIA is a hub, and hubs carry a particular risk: a delay early in the day propagates through every aircraft that was due to fly on afterwards. Morning departures from a hub are reliably better than evening ones.
Which airlines run best out of MIA
| Airline | Departures | On time |
|---|---|---|
| Virgin Atlantic | 1,022 | 84.3% |
| Envoy Air | 1,147 | 82.7% |
| Delta Air Lines | 904 | 81.3% |
| Frontier Airlines | 342 | 78% |
| British Airways | 876 | 77.7% |
| United Airlines | 495 | 77.3% |
| American Airlines | 6,427 | 71.1% |
| Southwest Airlines | 453 | 65.3% |