Does anyone know which airline offers travel to Argentina for the fewest frequent flyer miles. I will be using miles to bring a friend from Argentina to the NE US (so probably a Buenos Aires-NYC route), with a departure in July and a return in December? I believe its 60K on American and 50K on Delta but I can't find information for other airlines, particularly ones which are partners of US carries and would therefore take miles in a US carrier account. I have miles in Diners and in Amex which I could convert as needed. Thanks.