Peoria, IL

What the Data Says About PIA

Peoria, IL in Peoria, Illinois handled 44,104 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 80.7% on-time departure rate. Of those flights, 8,526 experienced delays, 616 were cancelled, and 53 were diverted. The cancellation rate works out to 1.40%, the diversion rate to 0.12%, and the average delay when departures run late is 86.3 minutes. These figures are the baseline for comparing PIA against other airports in the same state and nationally.

Breaking down what drives delays at PIA, Late Aircraft leads the pack. Late Aircraft accounts for 41.1% of total delay minutes, followed by Carrier at 31.4% and NAS (National Aviation System) at 18.1%. Weather contributes 9.4% 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, October runs the cleanest at PIA with a 92.8% on-time rate, while December is the roughest at 88.1% — a 5-point swing between best and worst month. Volume peaks in July, when average flights hit 675. The busiest route from PIA is to PIA (Peoria), with 6,697 flights at a 79.7% on-time rate. Combine these numbers — 80.7% on-time, 86.3-minute average delay, 1.40% cancellation rate — and you have a concrete picture of departure reliability at Peoria, IL.