Chicago to Marquette

What the Data Says About ORD to MQT

The Chicago to Marquette corridor (ORD → MQT) covers roughly 303 miles and is served by 1 carrier, based on Bureau of Transportation Statistics reporting. Across 2,300 flights in the dataset, this route posts a 78.3% on-time rate with an average delay of 93.9 minutes when flights run late. Over the most recent 24 months of BTS data, 1,165 flights were recorded on this pairing — 25 cancelled (2.1%) and 1 diverted (0.1%). Those baseline metrics tell you what to expect before you book.

Having 1 carrier on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 2,300 total flights analyzed, the 78.3% on-time figure is statistically meaningful rather than a small-sample fluke. The 93.9-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, Aug 2025 posted the best performance on this corridor at 87% on-time, while May 2024 came in at 48% on-time — a 39-point gap between best and worst recent month. For travelers evaluating the ORD to MQT route, the combination of a 78.3% on-time rate, 93.9-minute average delay, 2.1% recent cancellation rate, and 1 available carrier is the concrete summary of what BTS data shows about reliability on this pairing.