depends where your sending it from
1 to 14 days or more
It depends on where in Argentina but it will take around the 14 hours and 15 minutes.
10 hours
California is approximately 6,071 miles away from Argentina. The flight would take about 12 and a half hours on a commercial airline.
As long as you do not take it on a plane to go down there. Argentina is not a US Territory. They have no jurisdiction down there.
Your answer depends on your starting point in Argentina, your ultimate destination in Antarctica, and the speed of your boat.
about 5 to 6 days
How long it would take to drive to Argentina depends entirely on where you are starting from.
This trip would take 15 hours by plane.
Argentina
For $12.95 the US Postal Service will send a letter to Argentina in 6 to 10 days via International Priority Mail. For 98 cents, they will send the letter First Class, but will only say that delivery time "varies". Obviously more than 10 days, but they won't be more specific than that. It probably depends on where in Argentina the letter is going: country vs city, business vs residence etc.
humans can't fly