The answer to the question, What terminal is Frontier Airlines at SJU?" is Terminal A at San Juan, Puerto Rico's Luis Muñoz Marín International Airport. Travelers flying with Frontier Airlines prefer Terminal A because it is the hub for both domestic and some international flights. This terminal is fully furnished with contemporary conveniences to improve traveler comfort. In order to... https://airlineofficedetails.com/frontier-airlines-san-juan-airport-terminal-sju/