For å ha en konstant regnes "lengste rute" som storsirkelen mellom de respektive flyplassers Aerodrome Reference Point (
ARP). Iom at dette aldri er praktisk mulig å fly vil utfløyet distanse alltid være noe lengre.
Wikipedia sier:
Since November 9, 2020, the longest active scheduled passenger flight by great-circle distance is Singapore Airlines' Flights SQ23/SQ24[20] using an Airbus A350-900ULR between Singapore and New York–
JFK at 15,349 kilometres (9,537 mi; 8,288 nmi).[21]
The longest ever scheduled passenger flight was Air Tahiti Nui's flight TN64 using a Boeing 787-9, flying non-stop from Faa'a International Airport in Papeete, Tahiti to Paris–
CDG,[22] a distance of 15,715 kilometres (9,765 mi; 8,485 nmi) in a scheduled duration of 16 hours, 20 minutes.[23] This route was operated from March to April 2020
LN-
FNB fløy ca 15.100 km på turen fra Oslo til Darwin, storsirkelen er på 12.820 km. Utfløyet distanse holder til pallplassering, men storsirkeldistansen er ikke blant topp 30.