Alaska Airlines will introduce three new seasonal nonstop routes from Charles M. Schulz-Sonoma County Airport (STS) starting November 1, 2026. The new destinations include Boise, Phoenix, and Salt Lake City, expanding the airline's service from Santa Rosa to a total of 12 nonstop locations. This move follows Avelo Airlines' departure from STS and reflects Alaska Airlines' continued investment in the Sonoma County market.