Summary The third longest flight departing the US is operated by Singapore Airlines from Los Angeles to Singapore, spanning 8,770 miles. Qantas Flight QF 7 from Sydney to Dallas is the 13th longest flight worldwide, covering 8,578 miles in around 16 hours and 21 minutes. United Airlines operates Flight UA 101 from Houston to Sydney, the 5th longest non-stop flight from the US, at 8,596 miles lasting 17 hours and 30 minutes.
Singapore Airlines' Flight SQ 23 is famously the longest nonstop commercial flight in the world. It travels from New York JFK to Singapore, covering 9,537 miles and taking 18 hours and 40 minutes to complete. However, this is far from the only ultra-long-haul flight operating out of the United States - the United States boasts 15 of the world's 20 longest nonstop flights .
Note that scheduled flight times vary with the direction flown, and actual flight times are often less. Here are the five longest nonstop flights from the United States after SQ-23. 5 Sydney to Dallas Flight QF 7 takes around 16 hours and 21 minutes Distance: 8,578 miles Aircraft: Boeing 787-9 Operator: Qantas Qantas Flight QF 7 (QF 8 is the return flight) from Sydney to Dallas is currently the 13th longest flight in the world and the 6th longest flight to or from the United States.
Between 2013 and 2016, flights between Dallas and Sydney were the longest regularly scheduled nonstop commercial flights in the world. Flight QF 7 remains one of the longest flights offered by Qantas (althoug.