"If they have JFK
, it really doesn't make sense to fly EWR
Your assuming the flight catered to NY'ers, Northern New Jersey's population is almost 7 Million. New Jersey is also the wealthiest State in the Nation, and home to many large corporations like Johnson & Johnson, At&t, Lucent, Merck, Phizer etc.
is not conveinent to New Jersey residents, remember only about 12-16% of EWR
's travelers are heading to or from NY. They are almost all New Jersey travelers.
Many large international airlines such as Lufthansa, British Airways, Air France, Alitalia, Singapore, CSA, Lot Polish, Swiss, Air India etc serve both EWR
Tap Air Portugal , Malaysian Airlines, SAS, EVA airways etc serve EWR