Qantas will be grounded for at least another day after an emergency hearing of the industrial umpire failed to resolve the dispute.
Fair Work Australia (FWA) will resume hearings in Melbourne at 2pm (AEDT) on Sunday, where both Qantas and the federal government have asked for the industrial action to be terminated.
Unions, however, are seeking only a 90-day suspension of the action so they can continue negoitions with the airline on pay and conditions.
The federal government asked for the hearing following Qantas' shock announcement on Saturday to immediately and indefinitely ground it domestic and international flights and lock out engineers, pilots and other employees, beginning on Monday night.
The airline's action comes as a result of a long-running industrial impasse between Qantas and three unions: the Australian and International Pilots Association (AIPA), the Transport Workers Union (TWU) and the Australian Licensed Aircraft Engineers Association (ALAEA).
Qantas CEO Alan Joyce announced at the airline's AGM on Friday that the industrial action over the past two months had cost the airline $68 million and affected about 71,000 passengers.