Yes, you can absolutely carry a pack of cigarettes in your hand luggage in 2026. The TSA and international aviation authorities permit tobacco products in both carry-on and checked bags without any major restrictions on quantity for domestic travel, as long as they are for personal use. However, the "catch" lies in the lighters and matches: you are generally limited to carrying one "common" lighter (like a Bic) or one book of safety matches on your person or in your carry-on; torch lighters and "strike-anywhere" matches are strictly prohibited. While you can carry the cigarettes, smoking and vaping are 100% prohibited on all commercial aircraft. If you are traveling internationally, you must also be aware of customs limits; most countries allow you to bring in 200 cigarettes (one carton) duty-free. Exceeding this amount without declaration can lead to heavy fines or confiscation at your destination's customs checkpoint, even if the cigarettes were legally permitted by the airline.