Miami to Birmingham

What the Data Says About MIA to BHM

The Miami to Birmingham corridor (MIA → BHM) covers roughly 661 miles and is served by 7 carriers, based on Bureau of Transportation Statistics reporting. Across 3,704 flights in the dataset, this route posts a 77.5% on-time rate with an average delay of 57.0 minutes when flights run late. Over the most recent 24 months of BTS data, 1,526 flights were recorded on this pairing — 24 cancelled (1.6%) and 4 diverted (0.3%). Those baseline metrics tell you what to expect before you book.

Having 7 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 3,704 total flights analyzed, the 77.5% on-time figure is statistically meaningful rather than a small-sample fluke. The 57.0-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, Sep 2025 posted the best performance on this corridor at 96% on-time, while May 2024 came in at 53% on-time — a 43-point gap between best and worst recent month. For travelers evaluating the MIA to BHM route, the combination of a 77.5% on-time rate, 57.0-minute average delay, 1.6% recent cancellation rate, and 7 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.