Iberia Airlines will return to Los Angeles International Airport in April, when the Spanish airline will launch four weekly nonstop flights to Madrid-Barajas Airport, officials announced Wednesday.Iberia last served LAX from 1984 to 1997.Each international flight brings jobs and economic activity to the region, and this new flight will connect us to one of the world’s most exciting cities, said Los Angeles Mayor Antonio Villaraigosa.The move is part of an alliance between Iberia, British Airways and American Airlines that led to the creation of four new routes set to begin in spring.Under the deal, American will launch flights between New York’s John F. Kennedy International Airport and Budapest, along with a new route between Chicago and Helsinki. British Airways will offer service between London and San Diego.The growth potential of our joint business and the extra capacity Madrid offers will enable Barajas Airport to become one of the main gateways for flights between North America and Europe in the very near future,said Antonio Vasquez, chairman and CEO of Iberia.LAX will experience a period of unprecedented growth” with the addition of 32 new weekly overseas flights between November and April, airport officials said.That number could be bumped up to 39 new weekly international flights if the federal government approves American Airlines’ plan to launch service