Spokane, WA

What the Data Says About GEG

Spokane, WA in Spokane, Washington handled 205,595 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 84.4% on-time departure rate. Of those flights, 32,016 experienced delays, 1,303 were cancelled, and 171 were diverted. The cancellation rate works out to 0.63%, the diversion rate to 0.08%, and the average delay when departures run late is 67.4 minutes. These figures are the baseline for comparing GEG against other airports in the same state and nationally.

Breaking down what drives delays at GEG, Carrier leads the pack. Carrier accounts for 40.0% of total delay minutes, followed by Late Aircraft at 33.6% and NAS (National Aviation System) at 17.3%. Weather contributes 8.8% of delay minutes at this airport, while security holds the smallest share at 0.3%. 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 GEG with a 94.9% on-time rate, while December is the roughest at 90% — a 5-point swing between best and worst month. Volume peaks in August, when average flights hit 3,255. The busiest route from GEG is to SEA (Seattle), with 31,745 flights at a 86.5% on-time rate. Combine these numbers — 84.4% on-time, 67.4-minute average delay, 0.63% cancellation rate — and you have a concrete picture of departure reliability at Spokane, WA.