Commercial traffic at the Charles M. Schulz–Sonoma County Airport has surged to record highs, handling over 86,500 passengers in May alone—a 21% jump from last year. The North Bay Business Journal reports the rapid growth, fueled largely by Southwest Airlines, comes as the airport prepares for a highly disruptive phase of its multiyear apron expansion starting August 3rd to add more aircraft parking. Airport officials warn that the flight boom w…