Denver to Milwaukee

What the Data Says About DEN to MKE

The Denver to Milwaukee corridor (DEN → MKE) covers roughly 896 miles and is served by 19 carriers, based on Bureau of Transportation Statistics reporting. Across 14,140 flights in the dataset, this route posts a 77.4% on-time rate with an average delay of 64.8 minutes when flights run late. Over the most recent 24 months of BTS data, 5,106 flights were recorded on this pairing — 39 cancelled (0.8%) and 7 diverted (0.1%). Those baseline metrics tell you what to expect before you book.

Having 19 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 14,140 total flights analyzed, the 77.4% 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 87% on-time, while Jun 2025 came in at 54% on-time — a 33-point gap between best and worst recent month. For travelers evaluating the DEN to MKE route, the combination of a 77.4% on-time rate, 64.8-minute average delay, 0.8% recent cancellation rate, and 19 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.