United operated a massive fleet of 737 Classics. The 1980s Saul Bass "Rainbow" livery represents the epitome of retro charm, while the 1990s "Battleship Grey" scheme offers a moody, industrial look that perfectly matches rainy approaches into Chicago O'Hare.
: A common default inclusion representing one of the major real-world operators of the -300 variant. ixeg 737300 liveries