San Diego to San Luis Obispo

What the Data Says About SAN to SBP

The San Diego to San Luis Obispo corridor (SAN → SBP) covers roughly 263 miles and is served by 2 carriers, based on Bureau of Transportation Statistics reporting. Across 1,307 flights in the dataset, this route posts a 73.3% on-time rate with an average delay of 57.0 minutes when flights run late. Over the most recent 24 months of BTS data, 1,246 flights were recorded on this pairing — 39 cancelled (3.1%) and 4 diverted (0.3%). Those baseline metrics tell you what to expect before you book.

Having 2 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 1,307 total flights analyzed, the 73.3% 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, Oct 2025 posted the best performance on this corridor at 85% on-time, while Jun 2025 came in at 62% on-time — a 23-point gap between best and worst recent month. For travelers evaluating the SAN to SBP route, the combination of a 73.3% on-time rate, 57.0-minute average delay, 3.1% recent cancellation rate, and 2 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.