Minneapolis-Saint Paul International Airport's (MSP) Terminal 1 is the base of operations for Frontier Airlines. Frontier's check-in desks and gates Frontier Airlines MSP Terminal  are located in the main terminal section of the Lindbergh Terminal. A variety of facilities are available to visitors, such as lounges, shops, and restaurants. Because MSP is a crowded airport, it's best to arrive early in order to get through security and find your gate. Before you leave, check the airport's website or app for the most recent information on flight status and gate assignments. To ensure a seamless flying experience, make sure your ID and boarding card are ready.