CANBERRA - TWO in three Australian travellers are either members of the notorious Mile High Club or would like to be a member, a survey showed.

Asked if they would consider a mid-air sexual encounter, almost half of 1,110 people surveyed on Monday wanted an adventure, while 12 per cent already had mile-high membership wings.

'People are obviously looking for more stimulating entertainment than a movie or a CD when travelling by plane,' Totaltravel.com global marketing manager Paul Fisher said.

A flight attendant for Australia's flag carrier Qantas was sacked last year after claiming to have had a tryst with actor Ralph Fiennes in a business class lavatory during a flight from Darwin to Mumbai.

Singapore Airlines last November asked passengers on its new super jumbo Airbus A380 aircraft, which had its maiden commercial flight from Singapore to Sydney, not to seek Mile High Club membership in first class cabins, which boast a double bed.

Mr Fisher, whose company carried out the survey, said joining the Mile High Club was easier these days in a super jumbo, but urged travellers to be mindful of others within close cabin earshot if gripped by 'Mile High madness'.