Hi everyone, I was wondering if anyone can point me to which airlines/aircraft fly east coast USA to EZE with lie-flat seats? We have accumulated a lot of points in several different programs so I'm interested in all the options. I started to look and some United flights have lie-flat and some don't. We are trying to go around March sometime so if you know of airlines that will have converted to lie-flat seats by then, that info is also appreciated.

Thanks!
Marli