Sitka, AK

What the Data Says About SIT

Sitka, AK in Sitka, Alaska handled 14,900 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 82.7% on-time departure rate. Of those flights, 2,581 experienced delays, 157 were cancelled, and 79 were diverted. The cancellation rate works out to 1.05%, the diversion rate to 0.53%, and the average delay when departures run late is 62.2 minutes. These figures are the baseline for comparing SIT against other airports in the same state and nationally.

Breaking down what drives delays at SIT, Late Aircraft leads the pack. Late Aircraft accounts for 43.3% of total delay minutes, followed by Carrier at 33.5% and NAS (National Aviation System) at 11.8%. Weather contributes 9.5% of delay minutes at this airport, while security holds the smallest share at 1.9%. 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 SIT with a 94.8% on-time rate, while January is the roughest at 91.3% — a 4-point swing between best and worst month. Volume peaks in July, when average flights hit 330. The busiest route from SIT is to SIT (Sitka), with 3,876 flights at a 83.8% on-time rate. Combine these numbers — 82.7% on-time, 62.2-minute average delay, 1.05% cancellation rate — and you have a concrete picture of departure reliability at Sitka, AK.