Children under 6 years old travel for free, aged 6 to 9 get a 25% discount for sleeping berths and seats, aged 10 and over - full price. Children can only travel for free if they share a seat/berth with you. In this case, you do not need a ticket for the child just be prepared to show their passport to prove age when boarding. If you want a child to have their own seat you will need to book a regular ticket for them and we will apply a discount of 25%.