The Boeing 777 is a popular long-haul widebody workhorse that can be found on an interesting variety of one-stop intercontinental routes. According to present scheduling data made available by Cirium, an aviation analytics company, the very longest of these in 2026 clocks in at a top scheduled end-to-end block time of 29 hours, with all of the top 15 on this front penciled in to take 19 hours or more.