In 1997 , as United officially designated Los Angeles International Airport one of its hubs , SkyWest Airlines became a United Express partner as well .
In 1992 , Great Lakes Airlines became a United Express partner , followed by Trans States Airlines the following year .
In 1997 , as United Express officially designated Los Angeles International Airport one of United Express ' hubs , SkyWest Airlines became United Express   Express partner as well .
In 1992 , Great Lakes Airlines became a United Express partner , followed by Trans States Airlines the following year .