Back in 2016, Amazon's cargo air fleet (then known as Prime Air) consisted of 11 jets. By the end of 2022, the company told Bloomberg it expects to have more than 85 planes shuttling products across the US and other countries thanks to its recent acquisition of 11 Boeing 767-300 planes. More than the number of aircraft involved, Amazon's latest announcement is notable because it marks the first time the company has purchased, instead of leased, additional aircraft for its Amazon Air cargo operation. Amazon is buying seven used aircraft from Delta and four from Canada's WestJet. After they're retrofitted to carry cargo, the latter four will start flying for the company later this year.