you could fly from Australia to South America non-stop in only 12.5 hours, which is quite the astonishing feat. For direct flights with stop-overs in Auckland, you’re looking at about 16 hours all up, which is considerably longer.
It's about $3708 AUD for round trip flight which seems very expensive
What's the shortest route between Australia and Chile?
This seems to be the most available commercial route: https://www.chimuadventures.com/blog/wp-content/uploads/2016/03/flightPaths_QANTAS.jpg
It does not fly over antarctica, though.
It's about $3708 AUD for round trip flight which seems very expensive
How would that work on a flat Earth? This route assumes that the Earth is round.