Sanford to Grand Rapids

What the Data Says About SFB to GRR

The Sanford to Grand Rapids corridor (SFB → GRR) covers roughly 1,001 miles and is served by 1 carrier, based on Bureau of Transportation Statistics reporting. Across 1,438 flights in the dataset, this route posts a 69% on-time rate with an average delay of 82.3 minutes when flights run late. Over the most recent 24 months of BTS data, 894 flights were recorded on this pairing — 7 cancelled (0.8%) and 0 diverted (0.0%). 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 1,438 total flights analyzed, the 69% on-time figure is statistically meaningful rather than a small-sample fluke. The 82.3-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, Mar 2025 posted the best performance on this corridor at 87% on-time, while Mar 2022 came in at 45% on-time — a 41-point gap between best and worst recent month. For travelers evaluating the SFB to GRR route, the combination of a 69% on-time rate, 82.3-minute average delay, 0.8% recent cancellation rate, and 1 available carrier is the concrete summary of what BTS data shows about reliability on this pairing.