The old Durban International Airport, once the third-busiest in the country, was abandoned in 2010 for a new airport north of the city.
The regional airline has seen impressive growth in passenger numbers, but has yet to show a profit.
A judge has granted an interim interdict to prevent a new, low-cost airline from operating, following an application by Comair and Skywise.
Low-cost African airline Fastjet could start operating in South Africa in partnership with an investment company linked to one of Jacob Zuma’s sons.
The two beleaguered companies have a number of business consultants and associates in common.