Delta Air Lines, which has been rejiggering its flight schedules while still in Chapter 11 bankruptcy, will add nonstop flights from Los Angeles International Airport to 11 destinations in Mexico and Central America. Beginning in December, Atlanta-based Delta will offer nonstop flights to La Paz, Acapulco, Loreto, Mazatlan, Culiacan, Manzanillo, Zacatecas, Hermosillo and Torreon in Mexico; and to Liberia, Costa Rica; and Guatemala City. The airline will also add nonstop flights from LAX to Las Vegas, San Francisco, Sacramento, Oakland and San Jose beginning in December. Delta has ranked behind Southwest, American and United in the size of its LAX operations.