Qantas grounded all flights – effectively ‘locking out’ employees – in response to union strikes. The airline’s restructuring plans has worried staff that many jobs will move abroad.

An industrial court in Melbourne ordered the airline to resume flying last Monday.

Qantas’s Facebook page announced: “To those customers who couldn’t travel due to the grounding of the fleet. Please fly with us, on us.”

The offer – which will cost the company around Ł12.5m – is extended to Australian resident customers who could not travel with Qantas between October 29 and October 31.

“We’d like to make it up to you by offering you the choice of a return domestic flight, or a return flight between Australia and New Zealand on us,” the Facebook statement read.

Qantas chief executive Alan Joyce added: “Throughout the long period of industrial activity we have been acutely aware of the impact on our customers.

“This ticket offer is one of a range of initiatives we will be launching as a way of saying sorry as we move forward into this period of stability.”

Tens of thousands of passengers were stranded when the Australia-based carrier stopped flying.