The Águila Azteca (Aztec Eagle) was a passenger train between Mexico City and Nuevo Laredo, and formerly to San Antonio station, which was operated by Ferrocarriles Nacionales de México.

In 1881, the Texas and Pacific Railway had previously completed the link from Dallas and El Paso, near Ciudad Juárez.

[1] Beginning in 1915, the flagship train of the Missouri Pacific was the Sunshine Special, which eventually carried through sleeping cars from St. Louis to Mexico City via Laredo.

[1] In 1952, the Ferrocarriles Nacionales de México elegant trains built by Schindler Waggon of Switzerland.

[4] There was a more luxurious train consisting only of bunk beds, a restaurant and an observation lounge, known as El Regiomontano, but it only operated from Monterrey to Mexico City.

[9] The train usually used the Mitla and Monte Albán dining cars, in which passengers could enjoy good dishes at affordable prices.