White Plains to Nantucket

What the Data Says About HPN to ACK

The White Plains to Nantucket corridor (HPN → ACK) 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 86.4% on-time rate with an average delay of 88.7 minutes when flights run late. Over the most recent 24 months of BTS data, 624 flights were recorded on this pairing — 16 cancelled (2.6%) and 6 diverted (1.0%). 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 624 total flights analyzed, the 86.4% on-time figure is statistically meaningful rather than a small-sample fluke. The 88.7-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 2024 came in at 76% on-time — a 16-point gap between best and worst recent month. For travelers evaluating the HPN to ACK route, the combination of a 86.4% on-time rate, 88.7-minute average delay, 2.6% recent cancellation rate, and 1 available carrier is the concrete summary of what BTS data shows about reliability on this pairing.