Servicios Aéreos Rutas Oriente, S.A. de C.V. was an airline based in Monterrey, Mexico. The airline was established in 1991 and had its first flight on March 18 of that year. Due to their low prices, SARO was one of the first low-cost airlines in Mexico and America. It operated scheduled and charter flights throughout the Mexican Republic. SARO ceased all operations in 1995.

Compañía Mexicana de Aviación, S.A. de C.V. was Mexico's oldest airline and one of the oldest continuously single-branded airlines, inaugurated in 1921. It was Mexico's biggest airline and flagship airline before ceasing operations on August 28, 2010, leaving competitor Aeromexico as a de facto monopoly.