San Jose to Denver

What the Data Says About SJC to DEN

The San Jose to Denver corridor (SJC → DEN) covers roughly 948 miles and is served by 19 carriers, based on Bureau of Transportation Statistics reporting. Across 16,125 flights in the dataset, this route posts a 84.4% on-time rate with an average delay of 63.4 minutes when flights run late. Over the most recent 24 months of BTS data, 6,055 flights were recorded on this pairing — 31 cancelled (0.5%) and 16 diverted (0.3%). Those baseline metrics tell you what to expect before you book.

Having 19 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 16,125 total flights analyzed, the 84.4% on-time figure is statistically meaningful rather than a small-sample fluke. The 63.4-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 91% on-time, while Jul 2025 came in at 68% on-time — a 23-point gap between best and worst recent month. For travelers evaluating the SJC to DEN route, the combination of a 84.4% on-time rate, 63.4-minute average delay, 0.5% recent cancellation rate, and 19 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.