We usually take the south exit from the airport and use 417 ( less traffic ). Take exit 2 for Celebration and go up to 192 and turn left and go until you get to Formosa Gardens Blvd. intersection (about 4 miles) near mile marker 4 and turn left and after less than 1 mile turn into FG (left).
FG to WDW: Take FG Blvd up to 192 and turn right (east) and take 192 to the exits for Disney or you can go east on 192 to the lights for Sherberth road( I think it's the first set) and turn left and take Sherbert to the first set of lights and turn right ( your right beside AK ) and follow the signs for whichever park. When you come back follow the signs for Ak and then AKLodge when you get closer and turn left at the Sherberth intersection and then right onto 192 and go back to the FG intersection.
FG to SeaWorld turn right onto 192 from FG Blvd. and go to the I - 4 intersection and head for Orlando. From I-4 just follow the signs for SW, usually 528. It would take you about 10 - 15 min.
From SW to the airport it would be about 20 -25 min. using 528,depending on traffic, probably allow 30 min.
On 417 there's two $1 tolls (manned booths) and a 50 cent exit toll ( not manned so you need the exact change).
528 is toll also but I don't know the exact amounts.