Jetstar Airways Pty Ltd, trading as Jetstar, is an Australian low-cost airline (self-described as "value based") headquartered in Melbourne. It is a wholly owned subsidiary of Qantas, created in response to the threat posed by low-cost airline Virgin Blue. Jetstar is part of Qantas' two brand strategy of having Qantas Airways for the premium full-service market and Jetstar for the low-cost market. Jetstar carries 8.5% of all passengers travelling in and out of Australia.

The airline operates an extensive domestic network as well as regional and international services from its main base at Melbourne Airport, using a mixed fleet of the Airbus A320 family and the Boeing 787 Dreamliner. Like its Qantas parent, Jetstar competes with Virgin Australia and Virgin's fully owned low-cost subsidiary Tigerair Australia.

Qantas Airways Limited is the flag carrier of Australia and its largest airline by fleet size, international flights and international destinations. It is the third oldest airline in the world, after KLM and Avianca, having been founded in November 1920; it began international passenger flights in May 1935. The Qantas name comes from "QANTAS", an acronym for its original name, "Queensland and Northern Territory Aerial Services", and it is nicknamed "The Flying Kangaroo".

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