Starting Feb. 25, 2026, U.S. and EU travelers need an ETA for UK entry, with carriers checking it before boarding.

Starting February 25, 2026, the UK will enforce its Electronic Travel Authorisation (ETA) system for visitors from visa-exempt countries, including the U.S. and EU nations, across all travel modes. While British citizens are exempt, dual nationals may face entry issues if they don’t use their British passport upon return. Carriers must verify ETAs before boarding, and failure to comply could result in denied entry or boarding. Those without EU Settlement Scheme or Leave to Remain status are advised to use their UK passport or obtain a Certificate of Entitlement to avoid disruptions.