Southwest Airlines is a major American airline known for its low-cost fares and no-frills service. Founded in 1967, it operates more than 4,000 flights daily to over 100 destinations across the United States and several international locations. The airline is recognized for its unique boarding process and friendly customer service, making it a popular choice among travelers. The airline's headquarters is located in Dallas, Texas, and it is one of the largest domestic carriers in the United States. Southwest operates a fleet primarily composed of Boeing 737 aircraft, which allows for efficient operations and cost savings. The airline has a strong focus on customer satisfaction and offers a rewards program called Rapid Rewards.