San Jose to Salt Lake City

What the Data Says About SJC to SLC

The San Jose to Salt Lake City corridor (SJC → SLC) covers roughly 584 miles and is served by 10 carriers, based on Bureau of Transportation Statistics reporting. Across 10,893 flights in the dataset, this route posts a 90.3% on-time rate with an average delay of 85.5 minutes when flights run late. Over the most recent 24 months of BTS data, 3,672 flights were recorded on this pairing — 13 cancelled (0.4%) and 1 diverted (0.0%). Those baseline metrics tell you what to expect before you book.

Having 10 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 10,893 total flights analyzed, the 90.3% on-time figure is statistically meaningful rather than a small-sample fluke. The 85.5-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, Feb 2024 posted the best performance on this corridor at 96% on-time, while Jun 2024 came in at 86% on-time — a 9-point gap between best and worst recent month. For travelers evaluating the SJC to SLC route, the combination of a 90.3% on-time rate, 85.5-minute average delay, 0.4% recent cancellation rate, and 10 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.