John F. Kennedy International Airport's Terminal 6 is where Frontier Airlines JFK Terminal . With a variety of facilities such check-in desks, self-service kiosks, food and drink options, and duty-free shopping, this terminal caters to both domestic and foreign passengers. Flying with Frontier offers passengers a simplified experience, complete with easy-to-follow signage and quick check-in, security, and boarding procedures. For Frontier passengers, the terminal provides a modern and convenient area, even though it is shared with other airlines. Arriving two to three hours prior to your flight is advised in order to give yourself adequate time for security and check-in.