Islip to Orlando

What the Data Says About ISP to MCO

The Islip to Orlando corridor (ISP → MCO) covers roughly 971 miles and is served by 7 carriers, based on Bureau of Transportation Statistics reporting. Across 7,628 flights in the dataset, this route posts a 77.6% on-time rate with an average delay of 81.1 minutes when flights run late. Over the most recent 24 months of BTS data, 2,856 flights were recorded on this pairing — 36 cancelled (1.3%) and 11 diverted (0.4%). Those baseline metrics tell you what to expect before you book.

Having 7 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 7,628 total flights analyzed, the 77.6% on-time figure is statistically meaningful rather than a small-sample fluke. The 81.1-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, Oct 2024 posted the best performance on this corridor at 95% on-time, while Aug 2025 came in at 62% on-time — a 33-point gap between best and worst recent month. For travelers evaluating the ISP to MCO route, the combination of a 77.6% on-time rate, 81.1-minute average delay, 1.3% recent cancellation rate, and 7 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.