You can't have razor blades in the cabin of a plane. Due to this, you'll be required to leave the blades at home. Instead, you'll need to pick up blades when you arrive. Thankfully, you shouldn't have an issue grabbing double-sided razor blades at a local drug store or even placing an order online.

You can bring a double-edge safety razor on a plane, but there is a major catch: the blades themselves are strictly prohibited in carry-on luggage. According to TSA and international security standards in 2026, you may pack the metal handle (the "razor" itself) in your carry-on, but you must remove the sharp double-edge blade and either dispose of it or pack it in your checked luggage. If you attempt to go through security with a blade loaded in the handle, it will be confiscated, and your bag will undergo a manual search. Many wet-shaving enthusiasts prefer to carry their favorite handle in their backpack and then purchase a small pack of blades at their destination, or they simply pack the entire kit—blades included—in their checked suitcase. Disposable razors (the kind where the blade is permanently embedded in plastic) and cartridge razors (like Gillette or Harry's) are perfectly fine in carry-ons, as their blades are not easily removable and are deemed safe for cabin travel.