Southwest Airlines destinations

As of April 2017^[update], Southwest Airlines has scheduled flights to 101 destinations in 41 states, Puerto Rico, Mexico, Central America and the Caribbean, the newest being Santa Clara, Cuba on December 15, 2016. The airline has 15 focus cities and operates over 3,800 flights each day.

Southwest does not use the "hub and spoke" system of other major airlines, preferring the "point-to-point" system. It has large operations in certain airports. An average of 80 percent of Southwest passengers are local passengers— only 20 percent of all passengers are connecting passengers. This is higher than most airlines, where many passengers connect in hub cities. However, at Southwest's focus cities, the percentage of connecting passengers can reach 30 percent. Recent numbers indicate that the number of connecting passengers is steadily rising.

As part of its effort to control costs, Southwest sometimes uses secondary airports in cities with high costs. Secondary airports have lower costs and may be more convenient to travelers than major airports. Some examples include:

Through Southwest's acquisition of AirTran Airways, Southwest opened a focus city in Atlanta and acquired additional slots at Washington–National and New York–LaGuardia. In addition, Southwest added service to the following destinations.

Southwest began planning international service when it acquired AirTran, which already served international destinations. Southwest's first approach to international service came on April 19, 2012 when it signed a contract with the Amadeus IT Group to launch an international reservation system. This agreement gave the airline the capability to begin flying to destinations outside of the United States.

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