Phoenix to San Luis Obispo

What the Data Says About PHX to SBP

The Phoenix to San Luis Obispo corridor (PHX → SBP) covers roughly 509 miles and is served by 12 carriers, based on Bureau of Transportation Statistics reporting. Across 6,372 flights in the dataset, this route posts a 85.6% on-time rate with an average delay of 74.5 minutes when flights run late. Over the most recent 24 months of BTS data, 2,390 flights were recorded on this pairing — 12 cancelled (0.5%) and 16 diverted (0.7%). Those baseline metrics tell you what to expect before you book.

Having 12 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 6,372 total flights analyzed, the 85.6% on-time figure is statistically meaningful rather than a small-sample fluke. The 74.5-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, Jan 2025 posted the best performance on this corridor at 93% on-time, while Jul 2025 came in at 70% on-time — a 24-point gap between best and worst recent month. For travelers evaluating the PHX to SBP route, the combination of a 85.6% on-time rate, 74.5-minute average delay, 0.5% recent cancellation rate, and 12 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.