Ontario to Dallas/Fort Worth

What the Data Says About ONT to DFW

The Ontario to Dallas/Fort Worth corridor (ONT → DFW) covers roughly 1,188 miles and is served by 4 carriers, based on Bureau of Transportation Statistics reporting. Across 12,747 flights in the dataset, this route posts a 80.8% on-time rate with an average delay of 97.1 minutes when flights run late. Over the most recent 24 months of BTS data, 4,760 flights were recorded on this pairing — 108 cancelled (2.3%) and 30 diverted (0.6%). Those baseline metrics tell you what to expect before you book.

Having 4 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 12,747 total flights analyzed, the 80.8% on-time figure is statistically meaningful rather than a small-sample fluke. The 97.1-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, Oct 2024 posted the best performance on this corridor at 93% on-time, while Jul 2025 came in at 67% on-time — a 26-point gap between best and worst recent month. For travelers evaluating the ONT to DFW route, the combination of a 80.8% on-time rate, 97.1-minute average delay, 2.3% recent cancellation rate, and 4 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.