The Kid et Co fare *

Two adults accompanying one child can travel half price on the reference fare.
Children under the age of 4 can travel free of charge without a reserved seat.
However, a Kid fare ticket will ensure the child has a seat.

Baby changing area

For babies and toddlers, there is a baby-changing table, a washbasin and a bottle warmer available in carriages 7, 17 and 27.

Any minor under the age of 18, whether accompanied or not, travels under the sole responsibility of his or her parents (or of an accompanying adult to whom the child has been entrusted). Please note, for Thalys offers involving a connection in London or where London is the departure point or destination, children from 12 to 16 years of age must have a parental consent form.
It is the parents' or guardian's responsibility to ensure with the relevant national authorities that their child has the documents required to travel between countries.
Children under the age of 12 are not permitted to travel unaccompanied on Thalys trains.