We're flying into Sanford in December. I am renting a car from
Alamo/National for about $53 for one day. We'll return it to the National rental agency at the Dolphin hotel the next day. To get back to the airport, we'll do the same thing in reverse: rent a car from the Dolphin and drop it off at Sanford. I found a special of about $45 for the return trip. I didn't want the car for the whole week and it was a lot cheaper for just the two days. Hope this helps.