Dallas to San Antonio

What the Data Says About DAL to SAT

The Dallas to San Antonio corridor (DAL → SAT) covers roughly 247 miles and is served by 1 carrier, based on Bureau of Transportation Statistics reporting. Across 15,361 flights in the dataset, this route posts a 81.4% on-time rate with an average delay of 57.0 minutes when flights run late. Over the most recent 24 months of BTS data, 5,504 flights were recorded on this pairing — 67 cancelled (1.2%) and 3 diverted (0.1%). Those baseline metrics tell you what to expect before you book.

Having 1 carrier on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 15,361 total flights analyzed, the 81.4% 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, Feb 2024 posted the best performance on this corridor at 93% on-time, while May 2024 came in at 65% on-time — a 28-point gap between best and worst recent month. For travelers evaluating the DAL to SAT route, the combination of a 81.4% on-time rate, 57.0-minute average delay, 1.2% recent cancellation rate, and 1 available carrier is the concrete summary of what BTS data shows about reliability on this pairing.