Atlanta to San Antonio

What the Data Says About ATL to SAT

The Atlanta to San Antonio corridor (ATL → SAT) covers roughly 874 miles and is served by 10 carriers, based on Bureau of Transportation Statistics reporting. Across 16,264 flights in the dataset, this route posts a 81.7% on-time rate with an average delay of 60.0 minutes when flights run late. Over the most recent 24 months of BTS data, 6,083 flights were recorded on this pairing — 52 cancelled (0.9%) and 12 diverted (0.2%). Those baseline metrics tell you what to expect before you book.

Having 10 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 16,264 total flights analyzed, the 81.7% on-time figure is statistically meaningful rather than a small-sample fluke. The 60.0-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, Oct 2024 posted the best performance on this corridor at 92% on-time, while Jul 2024 came in at 61% on-time — a 31-point gap between best and worst recent month. For travelers evaluating the ATL to SAT route, the combination of a 81.7% on-time rate, 60.0-minute average delay, 0.9% recent cancellation rate, and 10 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.