The Frontier Airlines SJU Terminal is located at Luis Muñoz Marín International Airport (SJU), the primary airport serving Puerto Rico. Operating out of Terminal A, Frontier Airlines offers passengers a smooth and affordable travel experience to various destinations across the United States. The terminal features essential amenities such as check-in counters, security checkpoints, res... https://airlineofficedetails.com/frontier-airlines-san-juan-airport-terminal-sju/