Monterey, CA

What the Data Says About MRY

Monterey, CA in Monterey, California handled 47,880 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 83.9% on-time departure rate. Of those flights, 7,712 experienced delays, 412 were cancelled, and 56 were diverted. The cancellation rate works out to 0.86%, the diversion rate to 0.12%, and the average delay when departures run late is 86.7 minutes. These figures are the baseline for comparing MRY against other airports in the same state and nationally.

Breaking down what drives delays at MRY, Late Aircraft leads the pack. Late Aircraft accounts for 40.4% of total delay minutes, followed by Carrier at 40.2% and NAS (National Aviation System) at 10.1%. Weather contributes 9.3% 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, April runs the cleanest at MRY with a 94.6% on-time rate, while December is the roughest at 90.4% — a 4-point swing between best and worst month. Volume peaks in October, when average flights hit 747. The busiest route from MRY is to MRY (Monterey), with 6,745 flights at a 82% on-time rate. Combine these numbers — 83.9% on-time, 86.7-minute average delay, 0.86% cancellation rate — and you have a concrete picture of departure reliability at Monterey, CA.