This week Delta started up their daily non-stop direct flight from JFK to EZE. They usually do this during high season which just started. Convenient for those coming from JFK.
https://news.delta.com/delta-reconnect-new-york-and-buenos-aires-daily-seasonal-nonstop-flight
I didn't realize Aerolineas was losing so much money on this flight. I took it a few times and it was fairly full. Ticket prices between that route are probably going to go up now.
https://www.riotimesonline.com/aerolineas-cuts-ny-flights-boosts-madrid-miami/