Nantucket to White Plains

What the Data Says About ACK to HPN

The Nantucket to White Plains corridor (ACK → HPN) covers roughly 191 miles and is served by 1 carrier, based on Bureau of Transportation Statistics reporting. Across 624 flights in the dataset, this route posts a 84.1% on-time rate with an average delay of 105.7 minutes when flights run late. Over the most recent 24 months of BTS data, 624 flights were recorded on this pairing — 29 cancelled (4.6%) and 1 diverted (0.2%). 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 624 total flights analyzed, the 84.1% on-time figure is statistically meaningful rather than a small-sample fluke. The 105.7-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 92% on-time, while Jul 2025 came in at 71% on-time — a 21-point gap between best and worst recent month. For travelers evaluating the ACK to HPN route, the combination of a 84.1% on-time rate, 105.7-minute average delay, 4.6% recent cancellation rate, and 1 available carrier is the concrete summary of what BTS data shows about reliability on this pairing.