San Francisco Bay Oakland International Airport, formerly Metropolitan Oakland International Airport, is an international airport in Oakland, California. The airport is located 7 miles (11 km) south of Downtown Oakland and 12 miles (19 km) east of San Francisco, serving the East Bay of the San Francisco Bay Area. The airport is owned by the Port of Oakland and has domestic passenger flights to cities throughout the United States and international flights to Mexico, El Salvador, and Portugal, in addition to cargo flights to China and Japan. The airport covers 2,600 acres (1,100 ha) of land. The airport is an operating base for Southwest Airlines, which operates point-to-point routes with bases instead of a traditional network with hubs.

Oakland is the most populous city in and the county seat of Alameda County, California, United States. A major West Coast port, Oakland is the largest city in the East Bay region of the San Francisco Bay Area, and the third-largest city overall in the Bay Area. With a population of 440,646 in 2020, it serves as the Bay Area's trade center: the Port of Oakland is the busiest port in Northern California, and the fifth- or sixth-busiest in the United States. A charter city, Oakland was incorporated on May 4, 1852, in the wake of the state's increasing population due to the California gold rush.