There are a couple travel agencies in Ushuaia that sell open cabins at steep discount for cruises heading across the Drake Passage. If you've got a little flex

There are a couple travel agencies in Ushuaia that sell open cabins at steep discount for cruises heading across the Drake Passage. If you've got a little flexibility in your schedule, you can set foot in Antarctica for a lot less than if you bought a ticket anywhere else. also: be sure to make offerings to the sea gods before sailing because crossing the Drake Passage can be... exciting.