The longest non-stop passenger flight touched down in Australia on Sunday after more than 19 hours in the air. It's a milestone journey from New York that Qantas hopes to parlay into commercial success. Qantas flight QF7879 took 19 hours and 16 minutes to fly direct from New York to Sydney in the first of three “ultra long-haul” journeys planned by the airline this year. A total of 49 people were on board. Qantas partnered with two Australian universities to monitor how jetlag affected the health of passengers and crew members as they crossed multiple time zones.