Delta Air Lines and Grupo Aeromexico have filed an application with the U.S. Department of Transportation seeking antitrust immunity for a new joint venture on flights between the United States and Mexico. This joint venture is subject to standard regulatory requirements, including the approval of the Federal Economic Competition Commission, among others. The application marks a significant step in the creation of a US$1.5bn joint venture that, if approved, will allow Delta and Aeromexico to operate more effectively on routes between the U.S. and Mexico for the benefit of its customers. Also, Delta and Aeromexico will seek to expand opportunities to collocate and invest in airport facilities by improving gates and lounges. Additionally the airlines will increase joint sales and marketing initiatives.