Boeing 737-300
United Airlines Boeing 737-322, N313UA, is shown arriving at Los Angeles in August 1989.
United Airlines Boeing 737-322, N317UA, is shown at Orange County on August 14, 1999 wearing the carrier's updated
1994-introduced livery.
United Airlines Boeing 737-322, N399UA, is shown at Los Angeles International Airport on July 12, 2001, wearing the titles of United's
low-cost unit, "United Shuttle."