In 2017 , it was the seventh - busiest airport in the United States and the 24th - busiest in the world by passenger count .
SFO is the largest airport in Northern California and the second - busiest in California , after Los Angeles International Airport .
In 2017 , SFO was the seventh - busiest airport in the United States and the 24th - busiest in the world by passenger count .
SFO is the largest airport in Northern California and the second - busiest in California , after Los Angeles International Airport .