Portland to San Jose

What the Data Says About PDX to SJC

The Portland to San Jose corridor (PDX → SJC) covers roughly 569 miles and is served by 23 carriers, based on Bureau of Transportation Statistics reporting. Across 13,184 flights in the dataset, this route posts a 86.2% on-time rate with an average delay of 58.9 minutes when flights run late. Over the most recent 24 months of BTS data, 4,176 flights were recorded on this pairing — 19 cancelled (0.5%) and 1 diverted (0.0%). Those baseline metrics tell you what to expect before you book.

Having 23 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 13,184 total flights analyzed, the 86.2% on-time figure is statistically meaningful rather than a small-sample fluke. The 58.9-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, Mar 2024 posted the best performance on this corridor at 92% on-time, while Jun 2025 came in at 72% on-time — a 20-point gap between best and worst recent month. For travelers evaluating the PDX to SJC route, the combination of a 86.2% on-time rate, 58.9-minute average delay, 0.5% recent cancellation rate, and 23 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.