As of March 2015, Lufthansa uses Terminal 1 at John F. Kennedy International Airport for both departures and arrivals. Check with the airline before departure to confirm the terminal and check-in times.
Some international flights that arrive late at night might need to clear Federal Inspection Services at Terminal 4 rather than at the normal arrival terminal. Lufthansa can be reached by calling 1-800-645-3880 for further information, and the number for JFK Airport is 1-718-244-4444. Lufthansa has a lounge in Terminal 1 for seniors and business-class travelers, located near Gate 3. ATMs and currency exchange services are also available in Terminal 1, both pre- and post-security check-in.