Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Argentina to Chennai as you normally would.
Most people fly into Chennai (MAA) if they book a flight to Chennai from Argentina. Chennai is conveniently located just 16.5 km from Chennai’s city centre.
These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Buenos Aires Ministro Pistarini Airport to Chennai Airport flight would often be abbreviated as a EZE to MAA flight. Cordoba Pajas Blancas Airport (COR), Mendoza El Plumerillo Airport (MDZ), Buenos Aires Jorge Newbery Airport (AEP), Rosario Fisherton Airport (ROS), San Carlos de Bariloche Teniente Luis Candelaria Airport (BRC) are other airports near this flight route and their unique identifiers/IATA codes.