Tampa to Islip

What the Data Says About TPA to ISP

The Tampa to Islip corridor (TPA → ISP) covers roughly 1,034 miles and is served by 4 carriers, based on Bureau of Transportation Statistics reporting. Across 2,419 flights in the dataset, this route posts a 81.1% on-time rate with an average delay of 70.1 minutes when flights run late. Over the most recent 24 months of BTS data, 1,113 flights were recorded on this pairing — 16 cancelled (1.4%) and 3 diverted (0.3%). Those baseline metrics tell you what to expect before you book.

Having 4 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 2,419 total flights analyzed, the 81.1% on-time figure is statistically meaningful rather than a small-sample fluke. The 70.1-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, Nov 2023 posted the best performance on this corridor at 93% on-time, while Mar 2024 came in at 74% on-time — a 19-point gap between best and worst recent month. For travelers evaluating the TPA to ISP route, the combination of a 81.1% on-time rate, 70.1-minute average delay, 1.4% recent cancellation rate, and 4 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.