In 2026, Interrail (and Eurail for non-Europeans) remains "worth it" primarily for travelers who value flexibility over the lowest possible price. With the 2026 Rail Planner app, the pass allows you to hop on most regional and local trains across 33 countries without a second thought. For families, the value is unbeatable because children under 12 travel for free with an adult pass-holder. However, the "hidden cost" of Interrailing in the modern era is the mandatory seat reservation fee for high-speed trains (like the TGV or Eurostar) and night trains, which can add €10 to €30 per leg to your journey. If you are only visiting two specific cities (e.g., London to Paris), booking "point-to-point" tickets months in advance is almost always cheaper. But if your 2026 itinerary involves five or more stops or if you want the freedom to change your plans on a whim, the Interrail pass provides a level of spontaneity and convenience that individual tickets simply cannot match.