Why Did Boeing Build The 757 Without Winglets?

One of the most popular aircraft thatBoeing has developed and introduced is the757 series. In the late 1970s, Boeing was looking to continue advancing the commercial aviation industry, which led to the development of the 757, a narrowbody jet-powered airliner that first took flight in the 1980s. This became a popular airliner for carriers around the world, operating on short to medium-haul routes and even conducting transatlantic operations.