As an ignorant person visiting Manhattan, why would I choose to fly to JFK if EWR is significantly cheaper?
The distance is roughly the same at 19 miles, and the driving time is about 20 minutes more (40 minutes vs an hour), probably because of the tolls.
In my case, it’s $545 round-trip to JFK. On the other hand, if I fly to EWR and then leave from JFK, the ticket is $320.
Also, I’d be taking a taxi or an uber.