The Vietnamese airline has already been allocated thousands of takeoff and landing slots at Sydney’s main airport, said a person familiar with the matter. The opportunity for airlines at Sydney’s new airport makes it Australia’s most significant aviation infrastructure since Brisbane’s new airport four decades ago, he said. The network connecting Melbourne, Sydney and Brisbane is so lucrative for airlines that it’s known in Australia as the Golden Triangle. Koala aims to avoid Qantas and Virgin by striking deals with foreign airlines to provide domestic charter flights for their passengers in Australia. The loyalty programs operated by Qantas and Virgin Australia also create competitive advantages that are often underestimated, he added.