Several airliners use them. The Airbus A319 and A320 have very small upper and lower winglets. The longer-range twin-engine A330 and four-engine A340 have conventional winglets, as do Boeing 747-400s.

One way they can do this is by fitting aircraft with winglets ... When it comes to Airbus narrowbody aircraft, sharklets are a wingtip option for the likes of the A320, while the European ...