You may use your speaker over the plane, but you need to keep the volume lower so that you don’t disturb other passengers. It's also wise to bear in mind that some airlines have limitations on the usage of electronic devices during takeoff and landing. Preferably, you will need https://www.bluetoothspeaker.top/hot-selling-products-portable-wireless-bluetooth-speaker-multifunctional-speakers-with-rgb-lights/