Frontier Airlines MCO Terminal most Frontier flights are now conducted from Terminal C, although some routes may still depart from Terminal A. Therefore, it’s advisable for passengers to verify their flight details in advance. Travelers are recommended to arrive at least 2 hours before domestic flights and 3 hours before international flights to ensure they have sufficient time for check-in and security screening. Overall, Terminal C’s modern facilities and design significantly contribute to a more enjoyable travel experience for Frontier Airlines passengers at MCO.