Milwaukee to Phoenix

What the Data Says About MKE to PHX

The Milwaukee to Phoenix corridor (MKE → PHX) covers roughly 1,460 miles and is served by 9 carriers, based on Bureau of Transportation Statistics reporting. Across 8,003 flights in the dataset, this route posts a 85.1% on-time rate with an average delay of 79.8 minutes when flights run late. Over the most recent 24 months of BTS data, 2,940 flights were recorded on this pairing — 18 cancelled (0.6%) and 5 diverted (0.2%). Those baseline metrics tell you what to expect before you book.

Having 9 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 8,003 total flights analyzed, the 85.1% on-time figure is statistically meaningful rather than a small-sample fluke. The 79.8-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 91% on-time, while Dec 2025 came in at 69% on-time — a 22-point gap between best and worst recent month. For travelers evaluating the MKE to PHX route, the combination of a 85.1% on-time rate, 79.8-minute average delay, 0.6% recent cancellation rate, and 9 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.