Southwest Mystery City Sale: Bay Area

On the final day of Southwest Airlines' Mystery City Sale, the low-cost carrier provides you with not one, but three cities to choose from.

The San Francisco-Bay Area and its three airports -- San Francisco International, Oakland International and Mineta San Jose International -- are the focus of the final day of Southwest's four-day Mystery City Sale.

Like the other days, you must book your flights today and fly between May 4 and June 10. The only blackout dates are May 21-25 (Memorial Day Weekend).

Over the course of the four-day sale, Southwest has offered 50% off flights to Philadelphia, Nashville and Albuquerque, so it wasn't a stretch to think that it would head to the West Coast for the final day. But to provide three airports for their half-off sale? Kudos to Southwest for providing four days of great savings.