Aerolineas Argentinas will discontinue its 4x/week EZE - GRU service on 31May12 to be replaced by Austral on 02Jun12, initially on a one-for-one basis but increasing to daily flights on 01Jul12.
This change will see AU's EMB-190's replacing AR's larger 737-700's but the greater frequency will result in an overall increase in capacity on the route from approx. 560 to 700 seats per week.
These will be AU's first international flights out of EZE but the airline does fly domestically from there to COR, MDZ, and ROS. Lately AU's smaller EMB-190's have been increasingly favored over AR 737-700's for new routes (they are both owned by the Argentine government) even as AR takes delivery of more -700's.
Interestingly the Austral flight will be a very late evening / early morning operation:
EZE-GRU 2210 0155+1
GRU-EZE 0135 0430
Not very convenient for those departing Brazil !
Source: http://airlineroute.net via Eric Trum