Can You Bring a Keyboard on a Plane? It is generally permissible to bring a keyboard on a plane as part of your carry-on baggage. However, there are a few considerations and rules that need to be kept in mind when doing so. Firstly, the size of the keyboard should comply with the airline's carry-on size limits, which typically range from 18-22 inches in length and 14-18 inches in width. Additionally, it is important to ensure that the keyboard can fit within the overhead bin or under the seat without causing any inconvenience or obstruction for other passengers.