Yes, you can fly with a standard BIC-style disposable lighter, but there are strict rules about where you keep it. According to TSA and international aviation guidelines in 2026, you are permitted to bring one common lighter (disposable or Zippo) on the plane, but it must be on your person or in your carry-on bag. You are strictly prohibited from putting lighters with fuel in your checked luggage because they pose a fire hazard in the cargo hold. If a lighter is found in a checked bag, it will likely be confiscated. There is an exception for checked bags if the lighters are drained of fuel or enclosed in a "DOT-approved" airtight case, but for a simple BIC lighter, it is easiest to just put it in your pocket. Note that "torch lighters" (the ones that produce a blue, windproof flame) are banned entirely from both carry-on and checked bags because they burn at a much higher intensity and are considered "dangerous goods." Also, remember that while you can carry the lighter, using it on board—even in the lavatory—is a federal offense that can lead to massive fines and an emergency landing.