Qantas passengers stranded by the grounding of the A380s are expected to be flown to their destinations within 24 hours, Joyce said. The airline is adding flights from London and Los Angeles to help clear the backlog.
Joyce would not specify how much the airline has lost since the engine explosion, nor would he comment on whether Qantas plans to seek compensation from Rolls-Royce.
"We are working with Airbus and Rolls-Royce to fix this issue - that's our top priority and compensation talks will take place after the aircraft are back in the air," he said.
(This version CORRECTS Corrects percentage of decline in Rolls-Royce stock price. This story is part of AP's general news and financial services.)
Rolls-Royce has identified a faulty bearing box as the cause of the oil leak problem.
A380s would be kept off routes to Los Angeles from Australia's two largest cities - Sydney and Melbourne.
Rolls-Royce has indicated that number to be 40 engines worldwide.
The company said it expects to deliver no more than 30 of the engines to Airbus this year.