Hello Upgraded, I believe the above advice is wrong. I am a New yorker, currently living in Buenos Aires with parents in Miami so I have flown just about every conceivable routing back and forth 12 times this past year and offer my humble thoughts and advice.

First of all, unles the schedule recently changed the JFK EZE flight is NOT a 777 but a 763. Their are two flights most if not all days out of MIA a 767 at about 10:15 and a 777 at about 11:20. If the 10:15 is not showing good seats, perhaps you can stay the extra hour in MIA and take the 777 flight 943 I think.

With regards to JFK, the flight is not bad just on an older 767 (I personally prefer the 777 much much more) and recently it has been pretty full.

Transfering to JFK from LGA is best accomplished via a cab which will run about 20 bucks-there are other ways of course including the Carey bus which is cheaper, but its only 20 bucks or so, so with two people it costs the same and even if you are by yourself, you can't beat the convenience.

Hope this helps, let me know if you have any other Q's.