St. Louis to Dallas

What the Data Says About STL to DAL

The St. Louis to Dallas corridor (STL → DAL) covers roughly 546 miles and is served by 1 carrier, based on Bureau of Transportation Statistics reporting. Across 11,152 flights in the dataset, this route posts a 80.5% on-time rate with an average delay of 59.6 minutes when flights run late. Over the most recent 24 months of BTS data, 4,082 flights were recorded on this pairing — 67 cancelled (1.6%) and 15 diverted (0.4%). Those baseline metrics tell you what to expect before you book.

Having 1 carrier on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 11,152 total flights analyzed, the 80.5% on-time figure is statistically meaningful rather than a small-sample fluke. The 59.6-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 May 2024 came in at 67% on-time — a 26-point gap between best and worst recent month. For travelers evaluating the STL to DAL route, the combination of a 80.5% on-time rate, 59.6-minute average delay, 1.6% recent cancellation rate, and 1 available carrier is the concrete summary of what BTS data shows about reliability on this pairing.