Kalamazoo to Detroit

What the Data Says About AZO to DTW

The Kalamazoo to Detroit corridor (AZO → DTW) covers roughly 113 miles and is served by 4 carriers, based on Bureau of Transportation Statistics reporting. Across 5,925 flights in the dataset, this route posts a 86.8% on-time rate with an average delay of 103.4 minutes when flights run late. Over the most recent 24 months of BTS data, 2,008 flights were recorded on this pairing — 30 cancelled (1.5%) and 0 diverted (0.0%). Those baseline metrics tell you what to expect before you book.

Having 4 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 5,925 total flights analyzed, the 86.8% on-time figure is statistically meaningful rather than a small-sample fluke. The 103.4-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, Apr 2025 posted the best performance on this corridor at 96% on-time, while Dec 2025 came in at 62% on-time — a 35-point gap between best and worst recent month. For travelers evaluating the AZO to DTW route, the combination of a 86.8% on-time rate, 103.4-minute average delay, 1.5% recent cancellation rate, and 4 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.