From what I gather both DL and CO have very healthy returns on their ATL-EZE and EWR-IAH-EZE routes so would not expect those to be canceled.

And I have been flying LAN since they first entered the Argentine domestic market and then began flying the EZE-MIA route when it was established in August 2006. I find them to be a great airline, very dependable and overall good service. Wish they still offered the $650 RT

Sam