Aeromexico is the largest Mexican international carrier, with two-thirds more traffic than its closet competitor, Volaris. Yet, Volaris’ international market share is rising rapidly, with a 190% year-on-year increase in 2011 enplanements to 1.5 million.

Mexican carriers’ percentage of the international market, however, has declined since Mexicana ceased operations, with enplanements falling from 63% of the market to 60%. Foreign carriers saw market share grow correspondingly, from 37% of the market in 2010 to 41% in 2011. The market overall grew 4% to 51 million enplanements, SCT data show.

Most of the foreign gains went to U.S. carriers, with their passenger traffic rising 11% in 2011 to 15 million enplanements. But Central and South American airlines saw the largest percentage growth in the time period, with passenger traffic rising 37% to 2 million enplanements, the data show.

The passenger market between Mexico and Central and South America is one-tenth the size of the Mexico-U.S. market, according to the SCT data.