Trainline is the official reseller of Renfe and Avlo, the brands of Spain's national railway company, OUIGO and iryo as well. So you all have ALL the options in just one place. Trainline sells train tickets for the same price as the Spanish carriers. It does add a small booking fee.

While the official operator website, Renfe, is the source for tickets, it is notoriously difficult for international travelers to navigate due to translation errors and payment processing issues with foreign credit cards. In 2026, most experts recommend Trainline or Omio as the best platforms for booking Spanish rail. These sites aggregate all major operators—including Renfe, Avlo, Ouigo, and Iryo—allowing you to compare prices and speeds in a single, user-friendly interface. They accept all international payment methods and offer digital tickets that can be stored in your phone's wallet. While these third-party sites may charge a very small service fee, the convenience of a reliable English-language interface and 24/7 customer support generally makes them the preferred choice for a stress-free Spanish travel experience.