Aerolineas Argentinas used to do LAX-EZE non-stop. Unfortunately, when the economic crisis hit Argentina they discontinued the flight and left LAX. Now they only fly to MIA and JFK.

I really wish UA would add a west coast route. Of course my dream would be SEA-EZE non-stop but that hardly seems feasible! So my second choice would be LAX-EZE or SFO-EZE. I don't know how if it would be cost effective for UA or not but I would like it better than IAD-EZE.