San Francisco International Airport (IATA: SFO, ICAO: KSFO, FAA LID: SFO) is an international airport in an unincorporated area of San Mateo County, 13 miles (21 km) south of Downtown San Francisco. It has flights to points throughout North America and is a major gateway to Europe, the Middle East, Asia, and Oceania.

SFO is the largest airport in the San Francisco Bay Area and the second-busiest in California, after Los Angeles International Airport (LAX). In 2017, it was the seventh-busiest airport in the United States and the 24th-busiest in the world by passenger count. It is the fifth-largest hub for United Airlines, which operates out of Terminal 3 and the International Terminal. SFO functions as United's primary transpacific gateway. Additionally, SFO is a major maintenance hub for United Airlines and houses the SFO Museum that was created in 1980, the first museum in an international airport. It also serves as a hub for Alaska Airlines, which operates in Terminal 2.

The airport is owned and operated by the City and County of San Francisco and lies in a ZIP code assigned to San Francisco. However, it is located outside of San Francisco in unincorporated San Mateo County. Between 1999 and 2004, the San Francisco Airport Commission operated city-owned SFO Enterprises, Inc., to oversee its business purchases and operations of ventures.
What are the statistics about San Francisco International Airport?
It is an international airport 13 miles south of San Francisco. It is the largest airport in San Francisco Bay Area and second largest in the state of California. It is a 7th business airport in United States and 24th in the world by passenger count. It is one of the largest hub for United Airlines. it houses the SFO Museum which was created in 1980. It is owned and operated by the city and county of San Francisco