Commercial service at the Charles Shultz-Sonoma County Airport. Continues to expand. Officials say Southwest is tacking on an additional flight to Denver–offering service five days a week starting next August. The airport received slightly fewer passengers in 2025 than projections, but Airport managers say a lot of that was because the persistent Tule fog that has hung around for the past three weeks, causing more flight cancellations than usual. The airport hopes to add even