Wilmington, DE

What the Data Says About ILG

Wilmington, DE in Wilmington, Delaware handled 330 flights in the Bureau of Transportation Statistics dataset between 2021 and 2022, posting a 69.1% on-time departure rate. Of those flights, 102 experienced delays, 7 were cancelled, and 0 were diverted. The cancellation rate works out to 2.12%, the diversion rate to 0.00%, and the average delay when departures run late is 70.4 minutes. These figures are the baseline for comparing ILG against other airports in the same state and nationally.

Breaking down what drives delays at ILG, NAS leads the pack. NAS (National Aviation System) accounts for 40.3% of total delay minutes, followed by Late Aircraft at 39.2% and Carrier at 20.6%. Weather contributes 0.0% 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, May runs the cleanest at ILG with a 95% on-time rate, while December is the roughest at 72.2% — a 23-point swing between best and worst month. Volume peaks in April, when average flights hit 27. Combine these numbers — 69.1% on-time, 70.4-minute average delay, 2.12% cancellation rate — and you have a concrete picture of departure reliability at Wilmington, DE.