The Delta Airlines Terminal JFK Airport is located in Terminal 4, offering passengers modern amenities, fast check-in services, Delta Sky Club lounges, and easy connections for both domestic and international flights.The Delta Airlines Terminal JFK Airport is located in Terminal 4, offering passengers modern amenities, fast check-in services, Delta Sky Club lounges, and easy connections for both domestic and international flights.The Delta Airlines Terminal JFK Airport is located in Terminal 4, offering passengers modern amenities, fast check-in services, Delta Sky Club lounges, and easy connections for both domestic and international flights.