Raleigh/Durham to Miami

What the Data Says About RDU to MIA

The Raleigh/Durham to Miami corridor (RDU → MIA) covers roughly 700 miles and is served by 46 carriers, based on Bureau of Transportation Statistics reporting. Across 12,078 flights in the dataset, this route posts a 80.7% on-time rate with an average delay of 85.7 minutes when flights run late. Over the most recent 24 months of BTS data, 4,944 flights were recorded on this pairing — 73 cancelled (1.5%) and 16 diverted (0.3%). Those baseline metrics tell you what to expect before you book.

Having 46 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 12,078 total flights analyzed, the 80.7% on-time figure is statistically meaningful rather than a small-sample fluke. The 85.7-minute average delay applies only to flights that actually ran late, so it is not the average wait across all departures — the majority of flights on this route depart on time under the BTS definition of a delay (15+ minutes past schedule).

Looking at recent months, Feb 2025 posted the best performance on this corridor at 88% on-time, while Aug 2024 came in at 62% on-time — a 26-point gap between best and worst recent month. For travelers evaluating the RDU to MIA route, the combination of a 80.7% on-time rate, 85.7-minute average delay, 1.5% recent cancellation rate, and 46 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.