As of 2026, US citizens do not need a traditional visa for short-term tourism or business trips to Scotland (up to six months). However, there is a significant 2026 change: US citizens must now obtain a UK Electronic Travel Authorisation (ETA) before flying. This is a digital permission linked to your passport, similar to the US "ESTA" system. Additionally, if your trip to Scotland involves a layover or further travel into the Schengen Area (like France or Germany), you will also need to apply for the ETIAS (European Travel Information and Authorisation System). Both systems require an online application and a small fee (approx. £10 for the UK ETA and €7-€20 for ETIAS). While these are not technically "visas," they are mandatory travel authorizations. A supportive peer tip: apply at least 72 hours before your flight to avoid any last-minute stress at the boarding gate.