There isn't an independent Southwest Airlines location in Jacksonville, Florida. However, it conducts flights out of Jacksonville International Airport. Southwest Airlines Jacksonville Office go to the Southwest Airlines counters in the terminal to check in, get assistance, and purchase tickets. The airline operates several domestic routes out of JAX, making it a convenient choice for travelers. To get further help with reservations or changing flights, contact Southwest's customer service via phone, helpline, or official website. The personnel at the airport is also pleased to assist you if you have any immediate inquiries concerning your flight.