Yes, you can bring Spark NEO on airplanes in your carry-on baggage. Spark NEO features a built-in 1,300 mAh rechargeable lithium-ion battery, which is approved for airplane travel. As per TSA (Transportation Security Administration) guidelines, "Spare (uninstalled) lithium-ion and lithium-metal batteries, including power banks and cell phone battery charging cases, must be carried in carry-on baggage only," please ensure that you carry Spark NEO in your carry-on baggage when boarding.