If you use Route 417 (south exit from airport), there are two tolls each way at $1.25 ea, total R/T $5.00.
Travel time 25-30 minutes, distance approx 21 miles.
You can also use Rt 528/I4 (north exit from airport) tolls approx $.50 less each way.
I prefer using 417 very little traffic and very simple. Take 417 to exit 6 (Rt 536), follow 536 straight into WDW, after entering WDW take first right, turn right at light, DTD is 1/2 mile on left.