Do I need a ticket for my child who is under four years old?
Children less than four years old do not require a ticket to travel on the Eurostar, however they will not be allocated a seat and would need to sit on the lap of an adult. (Please note that only one infant per adult traveller is allowed)
Children need to be under 4 on their outbound journey and won't need a ticket if they turn 4 before the inbound journey.
You do not need to enter children under four years old onto the booking form nor do you need to notify us that they are travelling.
If you require a seat for any child that is under four years old, please enter them as being a child of four years old and above. The relevant child fare will then be applied to your booking.
Please note: All children regardless of age will require a valid passport.
More information on travelling with children