Atlanta to Denver

What the Data Says About ATL to DEN

The Atlanta to Denver corridor (ATL → DEN) covers roughly 1,199 miles and is served by 27 carriers, based on Bureau of Transportation Statistics reporting. Across 33,476 flights in the dataset, this route posts a 79.6% on-time rate with an average delay of 64.8 minutes when flights run late. Over the most recent 24 months of BTS data, 11,648 flights were recorded on this pairing — 109 cancelled (0.9%) and 45 diverted (0.4%). Those baseline metrics tell you what to expect before you book.

Having 27 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 33,476 total flights analyzed, the 79.6% on-time figure is statistically meaningful rather than a small-sample fluke. The 64.8-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 89% on-time, while Jun 2025 came in at 61% on-time — a 28-point gap between best and worst recent month. For travelers evaluating the ATL to DEN route, the combination of a 79.6% on-time rate, 64.8-minute average delay, 0.9% recent cancellation rate, and 27 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.