What do Americans need for UK entry now?

New electronic travel permission for visa‑exempt visitors

Travelers from visa‑exempt countries, including many U.S. passport holders, must now secure an electronic travel authorization before boarding for the United Kingdom. The change shifts a long‑standing practice: arriving with just a passport is no longer sufficient for those who previously relied on visa‑free entry. Authorities and airlines have moved to enforce the requirement more strictly in recent weeks, and the rule was brought into law early in 2025.

How this affects travelers

Airlines will check for the authorization at check‑in and can refuse boarding if a passenger does not have a validated entry permission. That means passengers risk being turned away at their departure airport rather than being dealt with at UK immigration on arrival. The authorization is digital and linked to the traveler’s passport, so it must match the travel document you use to fly.

What you should do

• Apply online via the official UK government portal well before travel.
• Make sure the passport you use for the application is the same one you travel with.
• Save confirmation emails or screenshots and carry them until you have cleared border control.
• If you hold dual citizenship or multiple passports, check which document you should use and carry evidence of any other relevant status.

If anything is unclear, check the official government website and your airline’s boarding requirements. The change is procedural rather than a blanket ban — most travelers who apply in advance will be able to travel as planned — but failure to secure authorization in time can mean missed flights and additional costs.