World's longest flights.

Perth-London: 17hrs 20 Min
Auckland - Doha: 17.40 hrs
Houston- Sydney : 17.30 Hrs
Houston - Johannesburg : 16.50 Hrs
Los Angeles- Singapore : 17 .20 Hrs
Abu Dhabi- Los Angeles: 16.30 Hrs
Singapore - New York: 18.45 Hrs----Longest.