The world’s longest commercial flight takes off from Singapore tomorrow morning, with the national airline resuming its non-stop route to New York for the first time since 2013. Singapore Airlines previously flew Airbus A340s on the route, but the four-engine aircraft proved to be fuel guzzlers and made the non-stop flight economically unsustainable. The flight will cover a 16,700 kilometres and take almost 19 hours (imagine 19 hours in a Lion Air economy seat!).