Denver to Birmingham

What the Data Says About DEN to BHM

The Denver to Birmingham corridor (DEN → BHM) covers roughly 1,083 miles and is served by 5 carriers, based on Bureau of Transportation Statistics reporting. Across 5,972 flights in the dataset, this route posts a 72.4% on-time rate with an average delay of 60.3 minutes when flights run late. Over the most recent 24 months of BTS data, 2,173 flights were recorded on this pairing — 13 cancelled (0.6%) and 2 diverted (0.1%). Those baseline metrics tell you what to expect before you book.

Having 5 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 5,972 total flights analyzed, the 72.4% on-time figure is statistically meaningful rather than a small-sample fluke. The 60.3-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 2025 posted the best performance on this corridor at 86% on-time, while Jun 2025 came in at 51% on-time — a 35-point gap between best and worst recent month. For travelers evaluating the DEN to BHM route, the combination of a 72.4% on-time rate, 60.3-minute average delay, 0.6% recent cancellation rate, and 5 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.