Miami to Atlanta

What the Data Says About MIA to ATL

The Miami to Atlanta corridor (MIA → ATL) covers roughly 594 miles and is served by 37 carriers, based on Bureau of Transportation Statistics reporting. Across 37,400 flights in the dataset, this route posts a 76.9% on-time rate with an average delay of 79.8 minutes when flights run late. Over the most recent 24 months of BTS data, 12,941 flights were recorded on this pairing — 170 cancelled (1.3%) and 26 diverted (0.2%). Those baseline metrics tell you what to expect before you book.

Having 37 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 37,400 total flights analyzed, the 76.9% on-time figure is statistically meaningful rather than a small-sample fluke. The 79.8-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, Oct 2024 posted the best performance on this corridor at 89% on-time, while Jul 2024 came in at 60% on-time — a 29-point gap between best and worst recent month. For travelers evaluating the MIA to ATL route, the combination of a 76.9% on-time rate, 79.8-minute average delay, 1.3% recent cancellation rate, and 37 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.