While winglets have been around for longer, Boeing first flew them on the 737-800 in June 1998 as a testbed for use on the BBJ. According to the Boeing 737 technical site, four different types of ...

Both blended winglets and split scimitar winglets can be retrofitted onto older aircraft models. For example, it is common to see early Boeing 737 models such as the 737-800 and the 737-900ER ...