Detroit to Green Bay

What the Data Says About DTW to GRB

The Detroit to Green Bay corridor (DTW → GRB) covers roughly 287 miles and is served by 8 carriers, based on Bureau of Transportation Statistics reporting. Across 5,638 flights in the dataset, this route posts a 84.9% on-time rate with an average delay of 84.9 minutes when flights run late. Over the most recent 24 months of BTS data, 1,890 flights were recorded on this pairing — 20 cancelled (1.1%) and 3 diverted (0.2%). Those baseline metrics tell you what to expect before you book.

Having 8 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 5,638 total flights analyzed, the 84.9% on-time figure is statistically meaningful rather than a small-sample fluke. The 84.9-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, Feb 2024 posted the best performance on this corridor at 92% on-time, while Dec 2025 came in at 56% on-time — a 36-point gap between best and worst recent month. For travelers evaluating the DTW to GRB route, the combination of a 84.9% on-time rate, 84.9-minute average delay, 1.1% recent cancellation rate, and 8 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.