Well i flew round trip with a 2x2 case in my suitcase. I had a laptop in my suitcase as well. On the return trip TSA inspected my suitcase with out me present. Nothing was stolen, but I am glad I did not take my custom main playing cue.I'm flying now with a 2x2 cheap case with a Lucasi and a sneaky Pete. I barely was able to fit the cue case into my suitcase.
Many thanks to those in this thread as I left my custom and break cue at home due to your advice. I'll let you guys know how it goes.