Frontier airlines sfo terminal is home to Airlines. The ticketing desks, departure gates, and check-in counters for Frontier are located in this terminal. To find Frontier Airlines’ services, make sure to follow the signage as Terminal 1 is a busy hub that serves many airlines. It’s best to get to the airport well in advance so that you have time to check in, get through security, and find your way around the terminal. Passengers on Frontier Airlines benefit from Terminal 1’s many amenities and well-marked routes, which contribute to a seamless travel experience.