The connections may be off-putting but the price may be low enough to sway some folks.
Searching CheapOair, we found seats for $583 round-trip, departing New York JFK on Wednesday, October 7, returning from Buenos Aires AEP on October 18. Flights connect via Panama City and Montevideo, traveling on Copa/Aerolineas.
Other dates seem to be available through November.
For those who prefer to go nonstop, you'll find JFK to EZE going for $799 round-trip as part of the current sale from LAN, valid for late summer/fall travel.
Visit our fare listings for Buenos Aires for a complete look at current deals from all over the US and Canada.