Personal lighters: butane, disposable (Bic), absorbed liquid (Zippo)
Quantity limits: One lighter per passenger in carry-on or on one's person. When a carry-on bag is checked at the gate or at planeside, any lighter in the carry-on must be removed from the bag and kept with the passenger in the aircraft cabin.
See the regulation: 49 CFR 175.10(a)(2)
Tip: On domestic flights in the U.S., up to two lighters can be placed in checked baggage if they are inside a special container meeting the requirements of a Dept. of Transportation (DOT) special permit. Major lighter manufacturers such as Prometheus and Zippo have secured these special permits. These DOT-approved lighter containers are available from retailers.
Tip: Butane torch lighters (a.k.a. blue flame lighters, jet flame lighters) are not allowed in the cabin by TSA security rules. However, in the U.S., they may be carried in a special DOT-approved container in checked baggage as described above.
View our illustrated guide on Airline Passengers and Lighters.