AFAIK, South Pole overflights by airliners are limited to flights that want to set a circumpolar speed record...I believe it was done for the first time sometime in the 1960's...the latest attempt involves an NW
744 charter, though I dont know if it actually took place or not...
The NY ANG has a wing, based out of Schenectady (I think), that flies LC
-130's to the South Pole to service Amundsen-Scott station...for those missions I believe they stage out of CHC
Civilian-wise, a company called ANI operates a C-130 from South America (Punta Arenas I think) to Antarctica to service adventurers heading down there to climb or do other outdoorsy things, and I believe the British Antarctic Survey has a couple of Twotters based on Antarctica (Rothera?)...
As for regular airliner flights, here are the aforementioned routes SCL
, and PER
(which isnt flown by any airline presently) for an interesting comparison...
(Can't get hyperlinking to work, sorry)
As you can see, SCL
skirts off the Antarctic coast but PER
would cut straight through the heart of Antarctica, in fact those special airliner charter flights usually fly from Argentina to Perth in order to get that coveted South Pole overflight...
Hope this helps,