Airbus A319 Or A320: Which Aircraft Did United Airlines Operate First?

When it comes to short-haul narrowbody twinjets, airlines around the world have long had two main choices: the Airbus A320 family and the Boeing 737 family. This will continue to be the case for many decades to come, what with the increasing prevalence of the next-generation A320neo and 737 MAX series. As far as United Airlines is concerned, the carrier doesn’t discriminate, and operates jets from both.