Moline, IL

What the Data Says About MLI

Moline, IL in Moline, Illinois handled 45,407 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 83.4% on-time departure rate. Of those flights, 7,550 experienced delays, 621 were cancelled, and 55 were diverted. The cancellation rate works out to 1.37%, the diversion rate to 0.12%, and the average delay when departures run late is 88.4 minutes. These figures are the baseline for comparing MLI against other airports in the same state and nationally.

Breaking down what drives delays at MLI, Carrier leads the pack. Carrier accounts for 40.1% of total delay minutes, followed by Late Aircraft at 33.2% and NAS (National Aviation System) at 16.7%. Weather contributes 10.0% of delay minutes at this airport, while security holds the smallest share at 0.1%. 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 MLI with a 94.8% on-time rate, while July is the roughest at 90.5% — a 4-point swing between best and worst month. Volume peaks in March, when average flights hit 708. The busiest route from MLI is to ORD (Chicago), with 7,138 flights at a 83.6% on-time rate. Combine these numbers — 83.4% on-time, 88.4-minute average delay, 1.37% cancellation rate — and you have a concrete picture of departure reliability at Moline, IL.