Qantas Airways Limited is the national airline of Australia. The name was originally "QANTAS", an acronym/initialism for "Queensland and Northern Territory Aerial Services". Nicknamed "The Flying Kangaroo", the airline is based in Sydney, with its main hub at Sydney Airport. It is Australia's largest airline and the world's oldest continuously operating airline. Qantas headquarters are located in the Qantas Centre in the Mascot suburb of the City of Botany Bay, Sydney, New South Wales.

Qantas flies to 16 domestic destinations and 21 international destinations in 14 countries across Africa, the Americas, Asia, Europe and Oceania excluding the destinations served by its subsidiaries.

Qantas operates flightseeing charters to Antarctica on behalf of Croydon Travel. It first flew Antarctic flightseeing trips in 1977.

As of August 2010 the Qantas mainline fleet numbers 136 aircraft, albeit with some aircraft in storage.The A380 operates flights from Sydney and Melbourne to Los Angeles, Singapore and London (via Singapore). Qantas is currently the only operator of the A380 to operate the superjumbos from multiple bases.

The Qantas Frequent Flyer program rewards customer loyalty. Points are accrued based on distance flown, with bonuses that vary by travel class, and can be earned on Oneworld airlines as well as other partners. Points can be redeemed for flights or upgrades on flights operated by Qantas, Oneworld airlines, and other partners.