Planning a Trip?  What will gas prices be?  Should you top up along your way or wait until you reach your destination? As this is written, prices appear to be higher at big cities and lower in smaller towns.

Use this handy Link from AAA to determine the best places to gas up along the way. 

Scroll Down until you see the dark blue "View State Prices" button, select your State, and AAA will show you the average gas price for each county.

It's updated daily.

Check Gas Prices on AAA Here  Nationwide Link 

Check Gas Prices on AAA Here  Oklahoma Link 

Check prices on GasBuddy.com  Nationwide Link

Check prices on GasBuddy.com  Bartlesville Link