I'm traveling to Orlando in March and would like to know when Southwest posts the wanna get away fares online. Also do they post them at a certain time of the day when they are first posted?

The fares for March are already available. They have sales sometimes, but Wanna Get Away fares are online all the time, once the calendar opens for a time period.

If you book now and the fares goes sale, you can get a credit to be used later and there are no change fees.

If you haven't already done so, sign up for email specials and consider downloading their DING! program for more specials.

The fares in the WGA column and not posted for March yet. If those fares are sold out, it usually says not available.

I tested it using 2 diff departure cities and march 15th as date, they were there for me.

They're there for me too.