There is no direct connection between JFK and Manhattan, it requires a train transfer to the airtrain first at JFK then transferring to the MTA trains in Jamaica, Queens.
So you’re looking at 1hr – 1.5hrs of travel time on a train. We don’t recommend subway travel with luggage especially through rush hour. Not only will you be dealing with packed trains, you’ll also be dealing with lots of stairs up and down with luggage and people.
Don’t believe us? See this image below from google maps for the subway from JFK to Manhattan. And this is not even during rush hour and with no delays (good luck with that 🙂 )
1 hour and 17 min (estimated time)
A better option and still economical compared to a taxi ($52 +tip) is the NYC Airporter bus, for only $19 to Manhattan. NYC Express Bus is the only airport bus authorized by the Port Authority of New York & New Jersey. There are 2 main drop offs, Grand Central and the Times Square from 11am-7pm, 7 days a week.