Chicago to Grand Rapids

What the Data Says About ORD to GRR

The Chicago to Grand Rapids corridor (ORD → GRR) covers roughly 137 miles and is served by 35 carriers, based on Bureau of Transportation Statistics reporting. Across 14,929 flights in the dataset, this route posts a 79.3% on-time rate with an average delay of 73.4 minutes when flights run late. Over the most recent 24 months of BTS data, 6,274 flights were recorded on this pairing — 112 cancelled (1.8%) and 7 diverted (0.1%). Those baseline metrics tell you what to expect before you book.

Having 35 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 14,929 total flights analyzed, the 79.3% on-time figure is statistically meaningful rather than a small-sample fluke. The 73.4-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, Feb 2024 posted the best performance on this corridor at 89% on-time, while Dec 2025 came in at 56% on-time — a 33-point gap between best and worst recent month. For travelers evaluating the ORD to GRR route, the combination of a 79.3% on-time rate, 73.4-minute average delay, 1.8% recent cancellation rate, and 35 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.