Alaska Airlines is based out of Alaska Airlines San diego Terminal all of the necessary amenities for your Alaska Airlines trip are located in this terminal, including departure gates, check-in counters, and ticketing services. Because Terminal 1 can accommodate both domestic and international planes, finding what you need is simple and straightforward to navigate. It’s advised to arrive early to guarantee a seamless travel experience, giving yourself enough time for security checks, check-in, and any possible lines. To minimize stress on your trip, familiarize yourself with the amenities and layout of the terminal.