Phoenix to San Antonio

What the Data Says About PHX to SAT

The Phoenix to San Antonio corridor (PHX → SAT) covers roughly 843 miles and is served by 13 carriers, based on Bureau of Transportation Statistics reporting. Across 13,915 flights in the dataset, this route posts a 81.2% on-time rate with an average delay of 65.5 minutes when flights run late. Over the most recent 24 months of BTS data, 5,253 flights were recorded on this pairing — 23 cancelled (0.4%) and 11 diverted (0.2%). Those baseline metrics tell you what to expect before you book.

Having 13 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 13,915 total flights analyzed, the 81.2% 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, Sep 2024 posted the best performance on this corridor at 91% on-time, while Jul 2025 came in at 68% on-time — a 23-point gap between best and worst recent month. For travelers evaluating the PHX to SAT route, the combination of a 81.2% on-time rate, 65.5-minute average delay, 0.4% recent cancellation rate, and 13 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.