Southwest Airlines flies to over 100 destinations across 42 U.S. states, Puerto Rico, Mexico, Central America, and the Caribbean as of 2024

. It operates a point-to-point route system rather than the hub-and-spoke model, with 15 focus cities and more than 4,000 daily flights

. Key destinations and focus cities include:

• Denver International Airport (largest operation with 322 daily flights to 96 cities)
• Las Vegas, Chicago Midway, Baltimore/Washington, Dallas Love Field, Phoenix, Orlando, Houston Hobby, Nashville, St. Louis, Atlanta, Tampa, Austin, Oakland, San Diego, Sacramento, San Jose, Fort Lauderdale, Los Angeles, and Kansas City

Internationally, Southwest flies to:

• Mexico
• Central America
• Caribbean destinations such as Aruba, Montego Bay (Jamaica), Nassau (Bahamas), and San Juan (Puerto Rico)

Southwest does not fly outside North America and does not serve Canada due to payment system limitations

. The airline has built international terminals at some airports like Houston Hobby and Fort Lauderdale to support these routes

. For a full and updated list of destinations and route maps, Southwest’s official route map and listings provide detailed information

. In summary, Southwest Airlines primarily serves a wide range of domestic U.S. cities and select international destinations in Mexico, Central America, and the Caribbean.