According to TSA and international airline regulations in 2026, standard cigarettes are permitted in both carry-on and checked luggage. However, the distinction becomes critical when considering accessories and electronic alternatives. While physical tobacco is unrestricted, lighters and matches are strictly limited: you are generally allowed one disposable lighter or one book of safety matches on your person or in your carry-on, but these are strictly prohibited in checked bags due to fire risks. More importantly, vapes and e-cigarettes must always be in your carry-on; they are forbidden in checked luggage because their lithium batteries pose a thermal runaway threat. For international travelers, while the luggage location is flexible, you must adhere to "Duty-Free" limits—typically 200 cigarettes (one carton) per adult—to avoid heavy taxes or confiscation at your destination's customs checkpoint.