From The Airport Wiki

Qantas (Qantas Airways Limited) (IPA: /ˈkwɔntəs/) is the name and callsign of the national airline of Australia. Qantas is the world's third oldest continuously running airline[2] (after KLM - Royal Dutch Airlines and Avianca) and is the 20th largest in fleet size[3] with 213 aircraft. Qantas is ranked the 13th largest airline in the world by passenger numbers, carrying 24.9 million passengers in 2007.[4] Including 28 of these aircraft in the Jetstar Airways and 49 aircraft under the various QantasLink brands. In 2007, Qantas was voted the fifth best airline in the world by research consultancy Skytrax.[5] Its subsidary, Jetstar, was named the best low-cost carrier in the world.[6]

The name was originally "QANTAS", an acronym for "Queensland and Northern Territory Aerial Services". The company is based in Sydney, New South Wales and it is Australia's largest airline. It is traded on the Australian Securities Exchange as ASX: QAN.