Qantas is to further compensate passengers affected by its move to ground its entire fleet over a dispute with unions.
The Australian Competition and Consumer Commission asked it to do so.
Qantas grounded its entire fleet on Saturday, affecting almost 70,000 passengers.
The airline resumed operations on Monday after a court ordered a permanent end to the dispute.
Qantas originally offered customers refunds, the opportunity to rebook flights and compensation for expenses incurred by some travellers for flights which were booked up until midnight tonight.
But ACCC chairman Rod Sims said Qantas had not gone far enough in its support and said passengers should be compensated for all reasonable expenses incurred because of the grounding.
The ABC reports the ACCC wants a report from Qantas within the next month on the claims made and how it has addressed them.
Qantas says no customers stranded by the grounding of its fleet, will be left out of pocket.