B6MCO→ISP

JetBlue flew 374 of the 1,427 flights on MCO to ISP, about 26% of it. Its 88.3% on time is 14 points better than the route as a whole, which runs 74.8%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from JetBlue at 88.3% to Southwest at 67.1%.

The choice of carrier is not cosmetic here. Frontier Airlines arrives on time 75.1% of the time; Southwest Airlines manages 67.1%. Sample sizes sit next to every figure, because a two-point gap across 677 flights means less than a ten-point one.

Badly late arrivals are rare here: only 3.3% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

The 971 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The return leg is a different operation and performs like one: it runs 74.5% on time across 374 flights, 14 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 14 points of difference.

One caution: this is a thin sample. 374 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.