Yes, you can pack hair straighteners in your hand luggage when flying from almost any airport globally in 2026. Because they are corded electrical items without fuel or large batteries, they are generally treated like laptops or tablets. However, if you have cordless, battery-operated straighteners, they must be in your carry-on because they contain lithium-ion batteries, which are a fire hazard in the cargo hold. A "pro tip" for travelers is to ensure the device is completely cool before packing it to avoid damaging your bag, and always carry a plug adapter if you are traveling between regions with different voltage or socket standards.