Travelling abroad requires official travel documents. The specific documents that you require depend on the country or region that you are travelling to. Many countries require that your identity card or passport is valid for a significant period of time after your return journey as well.
You may need the following documents:
Young children and babies must also have a valid passport or identity card.
Kids-ID for children younger than 12
You can apply for a Kids-ID at your local authority. This is an electronic ID for Belgian children younger than 12 years old. A Kids-ID enables children to travel within the European Union and a number of other countries
Request your Kids-ID well ahead of time
Issuing a Kids-ID takes approximately 3 weeks, and sometimes longer during busy periods. So, request yours well ahead of time. Made a last-minute application? You can always make use of the accelerated application procedure, although this is more expensive