In 2017 Southwest Airlines change the reservation platform they used, under this new system if you made a change to an existing itinerary the new booking would become nonrefundable (instead of receiving a cash refund you’d receive a points refund). As a work around you could cancel your ticket and then rebook it, but thankfully Southwest is moving back to the old rules. Flights booked after 10/10/18 will still be refundable if a change is made.
Hat tip to Deals We Like
