MTR Family Ticketing — Children Under 3 Free, Child Fares

MTR Family Ticketing cuts monthly transit costs by HKD 600–800 for families with young children, offering the best rail savings in Hong Kong. Children under 3 travel entirely free with a fare-paying adult, and those aged 3–11 pay roughly half the adult rate—approximately 30% cheaper than the average child fare in comparable cities. For a family of two adults and two children making four weekly trips, this beats the full-adult alternative by over 40%. Regular commuters can add an Octopus Monthly Pass (HKD 440 for most routes) for further savings. Apply for a Child Octopus card at any MTR Customer Service Centre with a copy of the child's HKID or birth certificate.