Save even more using 528. Don't get on it right away but instead go left at the first light when leaving the airport north exit. Little over a mile is next light (Conway), take two quick lefts to get on 528 west from there.
Returning to airport via I-4 east to 528 east, get off 528 at its exit 9 (Tradeport). Left and cross under, get into middle lane. Required right onto McCoy, next light is airport entrance (turn right).