visit us : https://www.terminalfind.com/frontier-airlines/frontier-airlines-san-terminal-san-diego-international-airport/ Flying both domestic and international, Frontier Airlines SAN Terminal is based out of San Diego International Airport (SAN), a busy airport in Southern California. Frontier is well-known for its low-cost business strategy, which targets travelers on a tight budget by providing affordable fares and a streamlined service system. At SAN, Frontier runs out of Terminal 1, one of the airport's main terminals that sees a lot of traffic and airlines each day. Here is a detailed look at the facilities, services, and operations of Frontier Airlines at SAN's Terminal 1.