Please be aware that New York has multiple airports and that these results are for all airports serving the city.
The best month to fly between New York and Fort Lauderdale is May and the most expensive month to fly is April. (Average prices, based on 395 datapoints.)
The best day to arrive at New York is Monday and it would be best to avoid Saturday, as prices are on average 186.11% higher than on Monday. (Average prices, based on 400 datapoints.)