I recently analyzed the low cost airline market in Mexico, comparing Volaris and Interjet. The overall airline industry in Mexico is dominated by flag carrier Aeromexico with the largest fleet, resulting in many more frequencies than all competitors. Besides Aeromexico, there are a number of low cost and regional airlines competing for domestic passenger traffic. This competition makes it easy to fly to most cities in Mexico at reasonable fares. Low cost carrier Volaris serves approximately 30 destinations in Mexico and 12-15 in the US. Volaris is 2nd to Aeromexico in international market share. Their aggressive growth strategy and aircraft on order (47 in service , 42 on order) will enable Volaris to gain domestic market share from Interjet and possibly international market share from Aeromexico. Interjet serves more cities in Mexico (43) than Volaris but far fewer US cities. A third low cost Mexican carrier, Viva Aerobus serves 27 domestic destinations and has very few US flights. Viva Aerobus has a smaller fleet so will need to add aircraft in order to gain market share from Volaris or Interjet.