Flammable liquids like butane, chlorine, and gasoline are banned on board (and in checked luggage), as are fireworks and explosive toys like bang snaps and blasting caps. However, some lighters are allowed, along with cigarettes and cigars – though you're forbidden to smoke them anywhere on the plane.

Items banned on flights in 2026 fall into two categories: those banned from the entire aircraft and those banned only from carry-on luggage. Strictly prohibited items in both checked and carry-on bags include explosives (fireworks, flares), flammable liquids (gasoline, paint thinner), and compressed gases (camping stoves with fuel). Lithium batteries are a major focus; large power banks or "hoverboards" are often banned, and loose lithium batteries must be in carry-on bags, never checked. In carry-on luggage, the "3-1-1" rule for liquids (max 100ml per container) remains standard at most airports, though new CT scanners are slowly phasing this out in some hubs. Sharp objects like knives, large scissors, and tools longer than 7 inches are also banned from the cabin. Furthermore, specific food items like "liquid-based" spreads (peanut butter, jam) are often confiscated if they exceed 100ml. Always check the specific "Hazardous Materials" list of your airline, as items like self-balancing scooters or certain "smart" luggage with non-removable batteries are completely banned by most carriers.