Using the metro in Italy's major cities like Rome, Milan, and Naples remains an affordable way to travel in 2026, with prices generally standardized for ease of use. In Rome, a single "BIT" ticket costs €1.50 and is valid for 100 minutes, allowing for one metro ride and unlimited bus transfers. Milan's ATM system is slightly more expensive, with a standard single journey ticket (covering zones Mi1-Mi3) costing €2.20. Most Italian cities now utilize "Tap & Go" technology, allowing you to use your contactless credit card or smartphone at the turnstiles, which automatically calculates the best fare for you. For tourists, "24-hour" or "48-hour" passes are usually available for around €7 to €13, providing great value if you plan to visit multiple landmarks. It is important to remember that while the metro is cheap, failing to "validate" a physical paper ticket in the yellow machines before boarding can result in an on-the-spot fine of over €50, so using a contactless card is often the safest and most convenient option for international visitors.