hi pam, i live in nazareth, east of allentown. it took me 16 1/2 hours and i use 81/66/17/95 which the 15 route is basicly the same thing. we leave at 3am and the only place were you hit traffic is 95 from fredricksberg to richmond pn 95. ( summer time theres alot more traffic) if your doing this in the summer, i use 81/77. times of travel for people vary pending on how many stops, how fast they drive and if you hit traffic. last night there was an aci. on 81 near hershey, we just missed it. we paid anywere from 2.83 to 3.00 for gas. friends of ours met ud there and they flew. left wdw at 2:30pm got home at 2:30am. problem with the plane had to switch planes. i drove there souvies home and we took them food shopping when they got there. so they kinda had the best of both worlds. for us, we love the drive, weathers bad i can modify my trip, i know the person sitting next to me isnt going to try anything and i use 100 gallons of gas.