Dallas/Fort Worth to St. Louis

What the Data Says About DFW to STL

The Dallas/Fort Worth to St. Louis corridor (DFW → STL) covers roughly 550 miles and is served by 23 carriers, based on Bureau of Transportation Statistics reporting. Across 13,080 flights in the dataset, this route posts a 76.9% on-time rate with an average delay of 73.9 minutes when flights run late. Over the most recent 24 months of BTS data, 4,774 flights were recorded on this pairing — 124 cancelled (2.6%) and 7 diverted (0.1%). Those baseline metrics tell you what to expect before you book.

Having 23 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 13,080 total flights analyzed, the 76.9% on-time figure is statistically meaningful rather than a small-sample fluke. The 73.9-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 2025 posted the best performance on this corridor at 85% on-time, while Aug 2025 came in at 57% on-time — a 28-point gap between best and worst recent month. For travelers evaluating the DFW to STL route, the combination of a 76.9% on-time rate, 73.9-minute average delay, 2.6% recent cancellation rate, and 23 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.