Frontier Airlines JFK Terminal operating out of Terminal 5 at John F. Kennedy International Airport (JFK) in New York is Frontier Airlines. A range of domestic and international flights are available from Frontier, which is well-known for its inexpensive, basic service. The terminal has a variety of dining options, retail stores, and amenities for passengers. It is modern and well-equipped. Flyers on Frontier should anticipate a quick check-in process, but be aware that there may be extra costs for other services like baggage and seat preference. Other important airlines, such as JetBlue, are served by Terminal 5, which offers travelers a congested but effective atmosphere for navigating the airport.