San Luis Obispo to San Diego

What the Data Says About SBP to SAN

The San Luis Obispo to San Diego corridor (SBP → SAN) covers roughly 263 miles and is served by 2 carriers, based on Bureau of Transportation Statistics reporting. Across 1,305 flights in the dataset, this route posts a 80.9% on-time rate with an average delay of 68.6 minutes when flights run late. Over the most recent 24 months of BTS data, 1,244 flights were recorded on this pairing — 33 cancelled (2.7%) 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 1,305 total flights analyzed, the 80.9% on-time figure is statistically meaningful rather than a small-sample fluke. The 68.6-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, Nov 2024 posted the best performance on this corridor at 86% on-time, while Dec 2025 came in at 73% on-time — a 14-point gap between best and worst recent month. For travelers evaluating the SBP to SAN route, the combination of a 80.9% on-time rate, 68.6-minute average delay, 2.7% recent cancellation rate, and 2 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.