Adak Island, AK

What the Data Says About ADK

Adak Island, AK in Adak Island, Alaska handled 1,254 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 77% on-time departure rate. Of those flights, 289 experienced delays, 42 were cancelled, and 7 were diverted. The cancellation rate works out to 3.35%, the diversion rate to 0.56%, and the average delay when departures run late is 53.8 minutes. These figures are the baseline for comparing ADK against other airports in the same state and nationally.

Breaking down what drives delays at ADK, Late Aircraft leads the pack. Late Aircraft accounts for 46.3% of total delay minutes, followed by Security at 33.7% and NAS (National Aviation System) at 14.4%. Weather contributes 0.7% of delay minutes at this airport, while security holds the smallest share at 33.7%. Travelers often overestimate the weather share; the BTS categorization shows late-arriving aircraft and carrier operations as the larger contributors.

Seasonally, June runs the cleanest at ADK with a 95.1% on-time rate, while August is the roughest at 78.3% — a 17-point swing between best and worst month. Volume peaks in December, when average flights hit 18. Combine these numbers — 77% on-time, 53.8-minute average delay, 3.35% cancellation rate — and you have a concrete picture of departure reliability at Adak Island, AK.