In other words, a plastic BIC lighter is acceptable, but leave the butane or torch lighters like your dad's old Zippo in your checked baggage, or even at home.

According to 2026 TSA and international aviation safety regulations, you can bring one common Bic-style disposable lighter in your carry-on luggage or on your person. These lighters are permitted because they use a simple flint-and-fuel mechanism that is considered relatively low-risk when supervised. However, lighters with fuel are strictly prohibited in checked bags unless they are enclosed in a specific DOT-approved airtight case. It is also important to note that "torch lighters" (which produce a high-intensity blue flame) and "plasma lighters" are generally banned from both carry-on and checked luggage due to their higher heat output and potential for accidental ignition. If you are a smoker or simply need a light for a birthday candle at your destination, a standard Bic is the safest and most compliant choice. Always remember that the final decision rests with the individual TSA officer at the checkpoint, who may ask you to leave any item behind if it appears modified or hazardous.