I've carried on a DE razor a few times, never with a blade, and got the bag searched every time! Last time was by two TSA people, one older female and a younger male. He had no idea what it was and was freaking out a bit. She had to explain to him what it was. She and I had a pleasant conversation. She even complemented me on the razor, a Muhle R 89, and said she was seeing more DE razors in men's luggage. Remember; in dealing with the TSA, attitude is everything. That said, carry on for me is disposables and a good cream that will fit into the 3.4 oz containers. I like brushless creams for this but you can certainly take your brush but remember to bag everything in quart sized ziplock bags.