How much is it to travel from Orlando to Tampa?

The date of your travel makes a big difference, but the cheapest I found was on Spirit Airlines - $117 per person including tax, and it's not a direct flight. It's not that far - why don't you get a rental car and drive it (in Florida, there's often no extra charge for "drop off" in another city)? That way ALL of you travel for roughly the cost of just one person's airfare, and you'll get there quicker. I would suggest Enterprise because they will come and get you. If you do not wish to drive, then a limo service would be another option that would still be quicker than flying and cost less.