Planning ahead pays off with the southwest airlines low fare calendar. It is intended for travelers seeking the best price without any uncertainty.  In a clean monthly layout, you can see the least expensive days to fly.  During peak seasons and holidays, it serves as a useful tool.  Weeks ahead of time, the calendar often marks important reductions in fare.  Select your departure and arrival locations to view targeted offers.  This feature is a perfect match for Southwest’s no-change-fee policy.  It promotes flexibility and saving.  This calendar provides you with control, regardless of whether your travels are work-related or for leisure purposes.