London-Singapore will become the longest LCC route in the world – based both on distance and scheduled flight time – when it launches in late Sep-2017. Currently Eurowings’ Cologne-coughet service is the longest LCC route in the world, and another Eurowings route, Cologne-Bangkok, is the second longest.
Eurowings is suspending service to coughet at the end of Apr-2017 but is maintaining service to Bangkok. Both routes were launched by the Lufthansa Group subsidiary at the end of 2015, enabling Eurowings to take over from Norwegian the distinction of having the world’s longest LCC route.
Norwegian initially gained the distinction of operating the world’s longest LCC route in Jun-2013, when it launched services to Bangkok from Oslo and Stockholm. Copenhagen to Los Angeles, a slightly longer route by distance, was launched in Mar-2014 and is currently Norwegian’s longest route. (Norwegian added Copenhagen to Bangkok in Jul-2014, but Copenhagen-Bangkok is slightly shorter.)