In general, when looking for the cheapest flight to New York, try to choose a flight departing in October for the best deal.
Most flyers found that booking flight tickets 31 days in advance of their planned departure date is, on average, the best time to get cheap flights to New York.
From most locations, the cheapest day to fly to New York is Wednesday. Most users found that departing on a Saturday was most expensive.
On average you can find the best deals on plane tickets to New York when looking for flights with morning departure times.