Qantas has announced delays for several flights to South Africa following last-minute alerts regarding falling debris from a SpaceX rocket. The airline noted that the southern Indian Ocean, chosen by SpaceX for reentry, intersects with its Sydney to Johannesburg route. Ben Holland, head of Qantas' operation center, expressed frustration over the lack of advanced notice about the debris. South African Airways flights are also experiencing similar delays, highlighting the impact of space activities on commercial aviation.