Not Legal Advice: Yes. Cigarette packs are allowed in your carry-on luggage, there are some cases that people forgot to remove it inside their jacket. Anecdotal sources suggest that it does not matter if the packets are opened or closed.
As per Southwestvacations.com, just use resealable plastic sandwich bag when packing the things or gadgets that are very close to your hearts such as cigarette packs and chewing gum with metallic wrappers; wireless phones; coins and money clips; keys and key chains, pens and mechanical pencils, to reduce minutes at the security checkpoint.
Packing is pivotal. Forget an essential item and you're left disappointed and scrambling to find the nearest store in your destination. Pack too much and you end up disorganized, burdened with heavy bags, and hemorrhaging money to pay for pricey airline baggage fees.
Check out 10 fundamental packing strategies that every traveler should learn at USA TODAY.