cost from POR to Orlando airport

[amyy]

We are going down in June with my mom. Halfway through the trip my mom will be coming home and we will fly with her. We plan to fly right back the next day. I am thinking of just keeping our room straight through the entire stay as I think with a code this is my cheapest option.

My questions how much will it cost the 3 of us to go to the Orlando airport (and 2 of us from the airport to POR)? Would we want to do Mears?

thanks