Top ranked Emirates also awarded as "Airline of the year 2016" offers some interesting solution from Italy to America. Direct return flights from Milan to New York are now starting at €378 per person. (Based on two travellers). This is including some good option to celebrate Christmas Holidays in NYC. All taxes and fees, meals and 2x checked bags are already included.
Emirates promotinal deal is valid for flights in travel period from January till 27th of June 2018. Based on date of your outbound flight to New York. Max stay 1 month. Discounted flights are available till 17th of December 2017 or until sold out. Below you can refer to booking samples via booking agents or directly with the airlines. (where you can also easily compare travel options - use flexible search).
Booking samples
Milan - New York for €411 (directly with Emirates)
Milan - New York from €378
Milan - New York from €342 (Non-stop Alitalia flights)
Europe - New York from £233 or €248 (open-jaw flights)
You can book your accommodation in New York in advance through Booking.com or consider following promo codes that offer booking servers Hotels.com, Amoma, Hotelopia or Venere.
Booking sample of cheap Emirates direct flights from Milan to New York for €378 here. In this case you would be flying from Milan to New York on 13th of May and returning back from USA to Europe on 26th of May 2018.