You can only carry one lighter on board. You should put it inside a resealable plastic bag (like the ones used for liquids), which you must keep on you throughout the flight. You cannot: put it in your hold luggage.
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Firearms and ammunition, as well as any replicas or imitations. Explosives and flammable items, such as fireworks, gas, and aerosols. Poisonous and toxic substances, including pesticides and certain chemicals. Lithium batteries and other hazardous materials, as these can pose a safety risk if not handled properly.
According to the CAA, you can only bring one small cigarette lighter on a plane. The condition is that your lighter needs to use absorbable liquid fuel. Some common examples would be propane, butane, or natural gas. One exception that is permitted would be liquefied gas.
For example, TSA guidance is very clear: If prohibited items are found during security checks, they won't be returned to their owners. That may vary in other countries, but the general rule is that confiscations are permanent.
The reason is simple: safety and/or security hazard. Many aircraft don't have cargo fire suppression systems. If one of those lighters inadvertently explode or catch fire, it's easier to suppress in the cabin than in the cargo hold.
What happens if you put a cigarette lighter in your suitcase? Lighters with fuel are not allowed in checked baggage, with the exception of two in a DOT approved case. Without fuel are OK. You are allowed to carry on regular butane (disposable or zippo) lighter.
Almost any sharp object you can imagine will not be allowed on-board a plane in your hand luggage. This includes obvious items like knives, saws, swords, and machetes, but also small items with blades like pairs of scissors that are 4 or longer in size.
Disposable and Zippo LightersLighters with fuel are prohibited in checked bags, unless they adhere to the Department of Transportation exemption, which allows up to two fueled lighters if properly enclosed in a DOT approved case.
You can even carry a disposable lighter, at least on flights originating in the US. Not matches, though, oddly enough. There is no limit, per se, to how many cigarettes you can carry, though if you go overboard and look like you're carrying import/export quantities, customs may have some questions for you.