How long does it take to get from LAX to Antarctica?

Answer 1

Flight time to the last commercial stop, Christchurch, New Zealand takes from 17 to 33 hours, depending on your connection points, plus you lose a day crossing the International Date Line, i.e., leave Saturday, land Monday.

Then you have at least another eight hours in the air aboard a flight that you must commission, since there is no commercial airline flight service to the Antarctic Continent.

(If you plan to stay, you'll also need to bring all your expedition equipment and team with you.)