Operating out of Terminal 5 at Chicago O'Hare International Airport (ORD), Southwest Airlines ORD Terminal is well-known for its customer-friendly policies and wide domestic network." One of the busiest airports in the United States, Terminal 5 (also called the International Terminal) is a thriving center that can accommodate millions of travelers. For both business and leisure travelers, Southwest Airlines provides easy travel options with its state-of-the-art amenities, effective services, and dedication to improving the customer experience.