The most reliable way to book train tickets to Lhasa is through China’s official railway platform, 12306 (website/app), which requires real-name registration. Tickets go on sale 15 days in advance, so early planning is recommended. If you need assistance with booking or integrating train travel into a Tibet itinerary, TravelIntoChina can provide guidance and booking services. Contact us at service@intotravelchina.com – we’ll help tailor your travel plans for a smooth journey.