It shouldn't be any more than $2.50 each way. You would take 528 from I-4 to exit 11 which is 436 (Semonan Blvd.) south to the airport. Here's the website if you need it:
Good luck with Sand Lake...it's always stop and go. Just that portion would take as long as the whole trip on 528. Sometimes it'a worth it to pay the tolls.