Fairfield Current | Southwest Airlines Cargo Begins Shipping Internationally AviationPros.com Later this summer, the carrier intends to add the ability to ship between the U.S. and Cancun, Puerto Vallarta, and Cabo San Lucas/Los Cabos before adding the ability to ship between the U.S. and other international destinations within its network. Southwest Airlines begins international shipping between Houston, Mexico Southwest launches international cargo operations Southwest begins international cargo service to Mexico |