Peach and I and others discussed Antarctica when season 11 was being filmed, and when the teams were in fact sent to the southernmost city in Argentina.
Even then, there were regularly scheduled summer charter flights to the Antarctic coast and adjacent offshore islands, and it was possible to construct a leg with tasks and housing, then, with flights every other day.
Not sure what the current charter flight schedules are in the summer, but it is possible, but requires perfect timing to get in and out. That said, it won't be this season as it is the beginning of southern hemisphere winter.