Boeing 737-500

United Airlines Boeing 737-522, N904UA, is shown arriving at Los Angeles in March 1993.

United Airlines Boeing 737-522, N912UA, is shown approaching Los Angeles International Airport on February 13, 1999
wearing the carrier's 1993 livery.

United Airlines Boeing 737-522, N913UA, is shown at Salt Lake City International Airport on May 11, 1999, wearing the
titles of United's low-cost unit, "United Shuttle."