Ithaca/Cortland, NY

What the Data Says About ITH

Ithaca/Cortland, NY in Ithaca/Cortland, New York handled 6,186 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 87.6% on-time departure rate. Of those flights, 767 experienced delays, 119 were cancelled, and 4 were diverted. The cancellation rate works out to 1.92%, the diversion rate to 0.06%, and the average delay when departures run late is 96.2 minutes. These figures are the baseline for comparing ITH against other airports in the same state and nationally.

Breaking down what drives delays at ITH, Late Aircraft leads the pack. Late Aircraft accounts for 34.4% of total delay minutes, followed by Carrier at 32.6% and Weather at 18.6%. Weather contributes 18.6% of delay minutes at this airport, while security holds the smallest share at 0.3%. Travelers often overestimate the weather share; the BTS categorization shows late-arriving aircraft and carrier operations as the larger contributors.

Seasonally, September runs the cleanest at ITH with a 97.6% on-time rate, while February is the roughest at 92.3% — a 5-point swing between best and worst month. Volume peaks in January, when average flights hit 120. The busiest route from ITH is to ITH (Ithaca/Cortland), with 1,442 flights at a 83.3% on-time rate. Combine these numbers — 87.6% on-time, 96.2-minute average delay, 1.92% cancellation rate — and you have a concrete picture of departure reliability at Ithaca/Cortland, NY.