One of my buddies, Alex, wanted me to look into the new proposed rules for knives on airplanes effective April 25, 2013. From what I’ve read it would have to be in your carry-on bag, not your pant’s pocket. This disqualifies every knife I have, looks like I’ll keep driving.
Source is the TSA Blog: TSA Prohibited Items List Changing April 25th – Small Pocket Knives and Some Sporting Goods Items to be Permitted
A Ronin's Journey 