[Marcos Wolff]

Hi Kara, if you are not planning to travel through Bolivia or Chile, you can fly from Lima to Buenos Aires, the airlines providing that route are Aerolineas Argentinas, Lan, TACA and Gol. The, once in Buenos Aires, you can travel to Rosario by bus (aprox 4 to 5 hours), the cost is about 13 US dollars, buses are comfortable, route is good and you will save a lot of $$$ busing instead of flying. The place you should visit in Tierra del Fuego is Ushuaia, if you have time to spend in Argentina, I would combine a tour with Puerto Madryn (to see whales and penguins) and El Calafate (to see glaciers). October is high season peryod in Argentina, so I would suggest you plan in advance. I don't know what is your style of accommodation that's why I'm not suggesting anything, but you will find in Buenos Aires, Rosario & Ushuaia all the types. Regarding the cheapest to fly, the earliest you book, the best fares for international flights. On domestic flights, Argentina has a strange policy of applying higher rates to foreing people, so prices do not change much, I would recommend to book in advance to Ushuaia because in high season there are cruises leaving from there to Antarctica and availability can be tricky. Hope this helps, Marcos