Gunnison, CO

What the Data Says About GUC

Gunnison, CO in Gunnison, Colorado handled 9,819 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 82.9% on-time departure rate. Of those flights, 1,675 experienced delays, 154 were cancelled, and 17 were diverted. The cancellation rate works out to 1.57%, the diversion rate to 0.17%, and the average delay when departures run late is 110.4 minutes. These figures are the baseline for comparing GUC against other airports in the same state and nationally.

Breaking down what drives delays at GUC, Carrier leads the pack. Carrier accounts for 53.4% of total delay minutes, followed by Late Aircraft at 26.5% and NAS (National Aviation System) at 12.4%. Weather contributes 7.6% 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 GUC with a 95.8% on-time rate, while June is the roughest at 88.8% — a 7-point swing between best and worst month. Volume peaks in March, when average flights hit 211. The busiest route from GUC is to GUC (Gunnison), with 3,742 flights at a 82.5% on-time rate. Combine these numbers — 82.9% on-time, 110.4-minute average delay, 1.57% cancellation rate — and you have a concrete picture of departure reliability at Gunnison, CO.