LAN Airlines offers select Roundtrip Fares to South America with prices starting at $267.60 as part of its Cyber Monday Sale. That's the lowest price we could find for select routes by at least at least $36 and the best price we've seen for flights on this airline. This price is valid on flights departing from Miami, FL, (MIA) with arrival in Punta Cana, Dominican Republic, on January 17 with return on January 24.