Miami to Charlotte Amalie

What the Data Says About MIA to STT

The Miami to Charlotte Amalie corridor (MIA → STT) covers roughly 1,107 miles and is served by 2 carriers, based on Bureau of Transportation Statistics reporting. Across 5,392 flights in the dataset, this route posts a 82.8% on-time rate with an average delay of 65.5 minutes when flights run late. Over the most recent 24 months of BTS data, 1,777 flights were recorded on this pairing — 11 cancelled (0.6%) and 18 diverted (1.0%). Those baseline metrics tell you what to expect before you book.

Having 2 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 5,392 total flights analyzed, the 82.8% on-time figure is statistically meaningful rather than a small-sample fluke. The 65.5-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 93% on-time, while Aug 2024 came in at 59% on-time — a 34-point gap between best and worst recent month. For travelers evaluating the MIA to STT route, the combination of a 82.8% on-time rate, 65.5-minute average delay, 0.6% recent cancellation rate, and 2 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.