San Diego International Airport, also known as Lindbergh Field, is the primary commercial airport serving San Diego, California and its surrounding areas. With an average of 18 million passengers annually, it is the second busiest single-runway airport in the United States. The airport features two terminals, Terminal 1 and Terminal 2, with a range of dining, shopping, and other amenities for passengers. Additionally, the airport has undergone numerous renovations and expansions in recent years to modernize and improve the passenger experience. It is a hub for Southwest Airlines and serves as a focus city for Alaska Airlines. With its central location and modern facilities, San Diego International Airport provides a convenient and efficient gateway to the city of San Diego and beyond.