Alaska Airlines operates out of Terminal 2 at San Diego International Airport. Specifically, Alaska Airlines flies out of Terminal 2 East. Terminal 2 is a large terminal and is further subdivided into an east side and a west side. If you accidentally end up in Terminal 2 West, its not a big deal, but itll be about a 3 to 5 minute, 0.2-mile walk to get to Alaskas check-in counters in Terminal 2 East. Alaska Airlines location in Terminal 2 East at San Diego Airport may be a bit of a change for flyers who havent flown Alaska since early 2019. Up until this time, Alaska operated out of both Terminal 1 and 2 at San Diego International Airport, but eventually consolidated all operations into Terminal 2.