Las Vegas to Ontario

What the Data Says About LAS to ONT

The Las Vegas to Ontario corridor (LAS → ONT) covers roughly 197 miles and is served by 3 carriers, based on Bureau of Transportation Statistics reporting. Across 12,667 flights in the dataset, this route posts a 77.1% on-time rate with an average delay of 58.4 minutes when flights run late. Over the most recent 24 months of BTS data, 5,309 flights were recorded on this pairing — 34 cancelled (0.6%) and 2 diverted (0.0%). Those baseline metrics tell you what to expect before you book.

Having 3 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 12,667 total flights analyzed, the 77.1% on-time figure is statistically meaningful rather than a small-sample fluke. The 58.4-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 89% on-time, while Oct 2025 came in at 69% on-time — a 20-point gap between best and worst recent month. For travelers evaluating the LAS to ONT route, the combination of a 77.1% on-time rate, 58.4-minute average delay, 0.6% recent cancellation rate, and 3 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.