Hopefully this wasn't already posted...I use Pack-N-Go to help plan trips. You input the state(s) in which you are licensed, where you're starting, where you're ending and it spits out the travel plan for the states you will be traveling through (assuming your are driving directly to the destination state)

http://apps.carryconcealed.net/packngo/index.php

Disclaimer: Do not rely solely on this. Do as much research as you can and take every possible precaution when traveling with firearms.