The following airports are in the area around the San Francisco Bay, including the cities of San Jose, San Francisco, and Oakland. The list includes only public-use and/or government-owned airports in the eleven counties (the nine counties that border the bay, plus Santa Cruz and San Benito Counties) that make up the Census Bureau's San Jose–San Francisco–Oakland, CA Combined Statistical Area. Commercial airports The Bay Area has four airports with airline service. San Francisco International Airport (KSFO) — Class B airspace Norman Y. Mineta San José International Airport (KSJC) — Class C airspace Oakland International Airport (KOAK) — Class C airspace Charles M. Schulz–Sonoma County Airport (KSTS) — Class D airspace Federal airports The following airports are operated by the federal government and are not open to the public. These airports have Class D airspace. Moffett Federal Airfield (KNUQ) in Mountain View and Sunnyvale, Santa Clara County Travis Air Force Base (KSUU) in Fairfield, Solano County General aviation airports Towered The following general aviation airports have enough traffic to have an air traffic control tower. These airports have Class D airspace. Buchanan Field Airport (KCCR) in Concord, Contra Costa County Hayward Executive Airport (KHWD) in Hayward, Alameda County Livermore Municipal Airport (KLVK) in Livermore, Alameda County Napa County Airport (KAPC) in Napa, Napa County Palo Alto Airport (KPAO) in Palo Alto, Santa Clara County Reid–Hillview Airport (KRHV) in San Jose, Santa Clara County San Carlos Airport (KSQL) in San Carlos, San Mateo County Non-towered The following airports do not have control towers, but are listed by their owners as open to the public. Pilots announce runway and airspace usage via radio contact. These airports have Class E airspace for those with an FAA-published instrument approach procedure, or Class G airspace otherwise. Angwin–Parrett Field (2O3) in Angwin, Napa County Byron Airport (C83) in Byron, Contra Costa County Cloverdale Municipal Airport (O60) in Cloverdale, Sonoma County Gnoss Field (KDVO) in Novato, Marin County Half Moon Bay Airport (KHAF) in Half Moon Bay, San Mateo County Healdsburg Municipal Airport (KHES) in Healdsburg, Sonoma County Hollister Municipal Airport (KCVH) in Hollister, San Benito County Nut Tree Airport (KVCB) in Vacaville, Solano County Petaluma Municipal Airport (O69) in Petaluma, Sonoma County Rio Vista Municipal Airport (O88) in Rio Vista, Solano County Sonoma Skypark (0Q9) in Sonoma, Sonoma County Sonoma Valley Airport (0Q3) in Sonoma, Sonoma County San Martin Airport (E16) in San Martin, Santa Clara