Frontier Airlines operates out of Terminal A at Orlando International Airport. This terminal is located on the north side of the main terminal complex and is specifically designed to accommodate domestic carriers and low-cost airlines. After check-in, travelers are directed to Airside 1, the concourse where all Frontier gates are located. To reach this area, passengers must pass through TSA security and take a short automated tram ride to the airside. https://airlinestermnals.com/frontier-airlines-mco-terminal-orlando-international-airport/