I am planning a getaway in April for myself and my partner. I will be flying out of Buenos Aires and want to go to Cancun and New York. I have ~30k miles with both United and Air France and 14k miles with Qantas. What will be the cheapest most effective way to book this, Multi-Cities always show me expensive prices. I am happy to go either BUE>CUN>NY>BUE or BUE>NY>CUN>BUE. I know with Black Friday and Cyber monday coming up I might be able to get a deal, the problem is organizing it all into one booking. I figure the experts here might be able to point me in the right direction, thanks.