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 €312 per person. This is including some good option to celebrate Christmas Holidays in NYC. All taxes and fees, meals and checked bag up to 23kg are already included. Moreover flights are on Emirates Airbus A380.
Emirates promotinal deal is valid for flights in travel period in November 2019 or January to March 2020. Based on date of your outbound flight to New York. Max stay 1 month. Discounted flights are available till 4th of July 2019 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 €339 (Manual search, travel sample 4. - 18.3.2020)
Milan - New York from €312 (Two travellers otherwise slightly more expensive)
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 €312 here. In this case you would be flying from Milan to New York on 4th of March and returning back from USA to Europe on 18th of March 2020.