Southwest Airlines' Arizona One
Southwest Airlines has a distinct color scheme for most of its fleet. The blue planes with thee red belly are easy to recognize. Southwest also pays tribute to some of the states where it flies frequently with specially painted aircraft. Arizona One is painted in the colors of the Arizona state flag. Phoenix is a focus city for Southwest Airlines, and Arizona is, of course, in the region that gives the low-cost carrier its name.
Other flag-themed planes in the Southwest stable include Lone Star One (painted in the colors of the Texas flag), Florida One and New Mexico One. Arizona One was one of the first aircraft to get the state-flag treatment. It was first unveiled in 1994. A special Southwest plane that's not state-flag related is Shamu One, which was painted to look like a killer whale.