Just curious, over flights to where?
In the late 70's Air new Zealand had flights from New Zealand to Antarctica which isn't *that* far if you look at a map.They were overflights...they didn't land...and IIRC the whole thing,from takeoff to landing,was something like 10 to 12 hours.But one of those flights crashed into Mount Erebus killing everybody on board.Visiting Antarctica...or at least seeing it from the air...is tops on my bucket list.