An audit report, a copy of which is available with Geo News, revealed that the national flag carrier suffered loss of Rs180 million by operating without passengers.
It said 36 additional flights on the Haj and Umrah routes were also operated without passengers and no inquiry was initiated despite the administration being informed about the matter.
The audit report said the issue has been declared a negligent act in the official documents.
In order to reduce operational costs, PIA last month laid off nearly 1,000 surplus employees.