Two months before it is due to open with just a handful of confirmed flights, workers are racing to finish a new international airport for Mexico City — one of President Andres Manuel Lopez Obrador’s flagship projects. With two commercial runways built on a military air base outside the capital, Felipe Angeles International Airport is meant to take the pressure off the city’s Benito Juarez airport. The existing hub, which handled 36 million passengers in 2021, is one of the busiest in Latin America. Its location in eastern Mexico City is far more convenient for many residents of the capital t…