WARNING: For those of you flying from Boston or NYC - PLEASE BE PATIENT with the ticket prices. For some reason right now they are ridiculously expensive.The most we have paid for a ticket is $900. However, right now is peak season (summer) here - so the ticket prices normally go down in the middle of January.
From Boston: There are no direct flghts from Boston to Buenos Aires. However, the stop over is never too bad. Normally we fly American Airlines and stop in Miami or in JFK. I prefer to stop in JFK, it is much easier. But for all flights to Buenos Aires, the trip is always overnight.. and I promise you it is not bad. I normally fall asleep 2 hours in and wake up when the flight attendants are serving breakfast.
From NYC: You can fly direct on American Airlines from JFK to Buenos Aires. There are also many other flights that stop through DC or Miami.