The World’s Most Flown Boeing 737s

The Boeing 737 is an immensely popular family of narrowbody aircraft, with almost 12,000 examples from the entire series having been produced since 1966. Some of these have been more extensively used than others, but which ones come out on top? Looking at fleet data made available by ch-aviation, let’s establish which active examples of each variant have racked up the most flight hours over the years.