Yes, you can bring hair straighteners and curling irons on a plane in 2026, but the rules depend on how they are powered. Standard corded (plug-in) hair tools are permitted in both carry-on and checked luggage without restriction; it is simply recommended to wait for them to cool completely before packing. However, cordless or battery-operated tools (specifically those with lithium-ion batteries) must be packed in your carry-on bag only to prevent fire risks in the cargo hold. If you have a butane-powered curling iron, it is generally allowed in carry-on luggage provided it has a safety cover, but spare fuel cartridges are strictly prohibited. For 2026 travelers, it is worth noting that some high-end cordless models may be subject to additional inspection at security, so keep them easily accessible in your bag.