Depends. Do your own comparability.
It really depends on where you're going. If you're coming from the city, then you also have the extra tolls to consider or extra train fare
I'm not sure sorry I can't help with that
Use google flight to check the price
It's cheaper from Newark most of the time. I would definitely compare prices first.
No one can say yes or no. Depending on your flight and airline. You have to cross reference it.
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