$196 Cheap Southwest Airlines flights Jacksonville (JAX) to San Diego (SAN)

Grab cheap round-trip Southwest Airlines flights from $391 from JAX to SAN by sorting your results from “Price (lowest to highest)” on Expedia. Or search for deals from $196 for a one-way journey.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines flights to San Diego are often more affordable in the quieter months of January and November. Whether you’re in search of a one-way or a return ticket, you could land a better deal then.

Search for cheap Southwest Airlines flights from Jacksonville Intl. Airport (JAX) to San Diego Intl. Airport (SAN) one to three months ahead of your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and journey, the best day to book a domestic flight is usually Sunday and the most expensive tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

To see if there’s a direct trip from JAX to SAN with Southwest Airlines or other carriers, select the “Nonstop” filter when browsing for tickets.

Sort your results by “Early Morning” and “Morning” to browse the earliest departures from JAX to SAN. Heading off early means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Hop on a Southwest Airlines flight from Jacksonville Intl. Airport (JAX) to San Diego, and you’ll probably arrive at San Diego Intl. Airport (SAN). This is the airline’s primary hub here.

It’s generally possible to modify or cancel your flight, although additional fees may apply if your booking was made more than 24 hours ago. Need to keep your options open? Use our “Changes included” or “No cancel fee” filter to find flights that won’t penalize you if you need to alter your plans. To make modifications, go to “Trips,” select your flight and click on “Manage Booking” for further information.