Jetstar says it will seek compensation over a security hitch at Sydney airport on Tuesday that left passengers stranded in the city overnight.
Fifteen of the airline's flights were cancelled when 16 passengers passed unchecked through security during a power failure, the ABC reports.
The terminal was evacuated and passengers had to be rescreened before flights could resume, causing significant delays.
Jetstar had 15 flights cancelled and more than 2000 passengers spent the night in Sydney.
The airline says it will seek damages in talks with the Sydney Airport Corporation for what it describes as the huge disruption to its service.
Australia's transport minister Anthony Albanese says there will be an inquiry.