American Airlines Group reported positive year-over-year traffic growth in 2013 for both American Airlines Cargo and US Airways Cargo. American’s cargo volumes in December 2013 were up nearly 13 percent versus the same period last year. American’s year-to-date cargo traffic was up 4.3 percent versus December 2012. US Airways’ year-to-date cargo traffic in December 2013 was up 7.5 percent versus the same period last year.