San Diego Air

San Diego Air is the largest low cost carrier in the United States, having surpassed Southwest Airlines in 2006 in terms of annual passengers, and is headquartered in San Diego, California. San Diego Air, commonly referred to as "SDA", has 6 hubs and 5 focus cities. Of these, San Diego is by far the largest in terms of departures and passengers carried. SDA was founded in 1977, and got FAA approval in 1980. The airline was a small airline until they acquired Pacific Southwest Airlines' fleet and destinations in 1988. As of 2018, SDA carries more domestic passengers than any other US based airline, and is the third largest airline in the world in terms of passengers carried, after American Airlines and Delta Airlines.

San Diego Air Express
San Diego Air Express

San Diego Air Express is a sub-airline wholly owned by San Diego Air, and was created in 1988 to serve the high number of regional destinations adopted from Pacific Southwest Airlines. After the start, SDAE continued to grow, only serving smaller, more regional airports, such as Yumpa Valley Airport, and uses smaller aircraft. All small aircraft currently being operated by San Diego Air were given to SDAE. Since its creation, SDAE has rivaled other sub-airlines, such as Delta Connection and American Eagle.

Destinations
List of San Diego Air destinations

SDA has over 160 destinations in total, and has destinations to 30 countries. As of December 2018, SDA operates 13,000 flights per day.

Fleet
San Diego Air Fleet

As of December 2018, SDA has a total fleet of 886, consisting mainly of Boeing aircraft and Airbus aircraft. SDA is the world's largest operator of McDonnell Douglas MD-80s.