You can now change your dates on Southwest at no extra cost, thanks to the Southwest Airlines CommunitySolved: Transferring Tickets.

I bought tickets for my family.My oldest daughter would like to take my husband's place on the trip.Can he transfer his ticket to her?

Let's use this one instead: https://www.southwestaircommunity.com/t5/General-Travel-Policies/Transfer-ticket/m-p...