Singapore Airlines Flights 23 and 24

Singapore Airlines Flights 23 and 24 (SQ23/SIA23 and SQ24/SIA24, respectively) are the longest regularly scheduled non-stop flights in the world, operated by Singapore Airlines between Singapore Changi Airport and New York–JFK. The route launched on 9 November 2020.

The route has a great circle distance of 15349 km. However, SQ24 to New York is typically flown a ground distance of around 17,250 km over the Pacific Ocean where jet stream winds can assist; while SQ23 back to Singapore sometimes opts, instead of the westward polar route, to fly a ground distance of 16,500 km eastward, across the Atlantic Ocean, when favorable jet stream winds assist to save both flying time and fuel.

The flights originally used an Airbus A350-900. On January 16, 2021, the route was changed to operate using an Airbus A350-900ULR.