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Cigarettes can be carried in both carry-on and checked luggage on most airlines, but smoking on commercial flights is strictly prohibited, with fines up to $4,000 for violations. While there are no domestic limits on the number of cigarettes for personal use in the U.S., international travel is subject to customs regulations, typically allowing around 200 cigarettes duty-free per adult, though this varies by country. Lighters, vapes, and other smoking accessories have stricter rules, often requiring them to be kept in carry-on luggage only. Private jet charters may allow smoking if permitted by the aircraft owner and operator, offering more flexibility compared to commercial flights.

Smoking on U.S. airplanes was gradually banned, starting with domestic flights under two hours in 1988 and culminating in a complete federal ban on June 4, 2000. This movement was driven by health and safety concerns, particularly regarding secondhand smoke and fire risks, despite resistance from the tobacco industry. By the early 2000s, most commercial airlines worldwide had adopted similar smoking bans, leading to a universal expectation of smoke-free flights. Today, smoking and vaping are prohibited on nearly all commercial and private flights, reflecting a commitment to passenger safety and comfort.