The country's primary airport is Monseñor Óscar Arnulfo Romero International Airport, which handles all international flights. It replaced Ilopango International Airport as the country's main airport on 31 January 1980. Ilopango airport is located within the city limits and could not be expanded due to the lack of land and the proximity of the surrounding population, so the new airport was built outside the city in the neighboring department of La Paz.