Niagara Falls, NY

What the Data Says About IAG

Niagara Falls, NY in Niagara Falls, New York handled 5,099 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 78.2% on-time departure rate. Of those flights, 1,112 experienced delays, 138 were cancelled, and 11 were diverted. The cancellation rate works out to 2.71%, the diversion rate to 0.22%, and the average delay when departures run late is 83.2 minutes. These figures are the baseline for comparing IAG against other airports in the same state and nationally.

Breaking down what drives delays at IAG, Late Aircraft leads the pack. Late Aircraft accounts for 45.2% of total delay minutes, followed by NAS (National Aviation System) at 27.3% and Carrier at 21.0%. Weather contributes 6.5% of delay minutes at this airport, while security holds the smallest share at 0.0%. 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 IAG with a 89.8% on-time rate, while June is the roughest at 83.1% — a 7-point swing between best and worst month. Volume peaks in March, when average flights hit 116. Combine these numbers — 78.2% on-time, 83.2-minute average delay, 2.71% cancellation rate — and you have a concrete picture of departure reliability at Niagara Falls, NY.