Do US citizens need anything for the UK?
Yes — an ETA. American visitors don't need a visa for short stays in the United Kingdom, but since 8 January 2025 the visa-free entry itself requires an approved Electronic Travel Authorisation: a digital permission you apply for online before departure, linked electronically to your passport. It applies to every US passport holder heading to the UK for tourism, family visits, business or short study — and since 25 February 2026 it is strictly enforced, meaning no approved ETA, no boarding pass.
If ESTA comes to mind, that's the right instinct in reverse: the ETA is the UK's counterpart to the system British travelers have long used for trips to the United States. Same idea — a quick pre-screening for visa-free visitors — with its own rules, its own fee and one important difference: a UK stay can run up to six months, not ninety days.
This guide walks through the application step by step, the cost and validity, who doesn't need an ETA at all, when a visa is required instead, and the practical traps — layovers, dual citizenship, passport renewals — that generate most of the horror stories. For the destination side of the trip, the United Kingdom overview has entry, missions and travel information in one place.
What the ETA is — and what it isn't
The Electronic Travel Authorisation is a pre-travel screening for visa-free visitors, not a visa. There's no interview, no consulate appointment and no paper document: you apply in minutes, the Home Office runs security checks against your passport details, and the approval is stored digitally against that passport. It covers the whole United Kingdom, and it also covers Jersey, Guernsey and the Isle of Man.
Two boundaries matter. First, the ETA only carries visitor activities: tourism, seeing family and friends, meetings and business trips, and study up to six months. It does not permit work for a UK employer, moving to Britain, or getting married there — those need the appropriate visa. Second, an approved ETA is permission to travel, not a guaranteed entry: a Border Force officer (or, more often these days, an eGate) still makes the admission decision when you arrive.
Think of it as the airline-facing half of UK border control. Carriers are now required to verify that every passenger holds a valid digital permission — an ETA, an eVisa or a visa — before boarding anything bound for the UK. The check happens at check-in, which is exactly why the application can't be left for the airport line.
- 1Use the UK ETA app or the official online form: The application runs through the UK ETA app (App Store and Google Play) or the equivalent form on the UK government's website. The app is the faster route: it scans your passport chip and takes the photos in one flow. A visa service can handle the application for you if you'd rather have the details checked before submission.
- 2Have three things ready: The passport you'll actually travel with, an email address, and a payment method (credit or debit card, Apple Pay or Google Pay). You'll photograph the passport, take or upload a photo of your face, and answer a short set of suitability questions — about ten minutes in total.
- 3Pay the fee: £20 per person: The fee is £20 at the time of writing, paid per applicant, and it is not refundable — even if the application is refused or your plans change. Every traveler needs their own ETA, including babies and children; parents can apply on a child's behalf.
- 4Apply days — not hours — before departure: Most decisions arrive within a day, but the Home Office says to allow up to three working days. You must wait for the approval email before traveling, so submit as soon as the trip is real — the ETA's two-year clock is a generous window, and there's no benefit to waiting.
- 5Save the confirmation, but nothing to print: Approval comes by email with a 16-digit ETA reference. The authorisation itself is linked electronically to your passport — airlines and the UK border see it when they scan the document. Keep the email findable for check-in questions; no printout is required.
Validity: two years, unlimited trips, six months at a time
An approved ETA lasts two years — or until the passport it's linked to expires, whichever comes first. Within that window you can travel to the UK as many times as you like, and each visit can run up to six months. For most Americans that means one £20 application covers every UK trip, business or personal, for two full years.
The passport link is the fine print worth remembering: renew your passport and the old ETA dies with it — you apply again with the new document, even if the two years aren't up. And six months per visit is not six months of residence on rotation: Border Force looks unkindly on travelers who try to live in the UK through back-to-back visits, and can refuse entry on that basis.
- Dual citizens with a British or Irish passport: British and Irish citizens are outside the scheme entirely — including dual US–UK nationals. But the exemption follows the citizenship, not the person: travel on your British passport (or carry a certificate of entitlement to the right of abode). A dual citizen booking on a US passport with no proof of British citizenship risks being turned away at check-in, because the airline sees an American with no ETA.
- Travelers who already hold UK permission: A UK visa, settled or pre-settled status, or any other permission to live, work or study in the UK replaces the ETA — that permission is already the digital record the carrier checks. The same goes for residents of Jersey, Guernsey and the Isle of Man.
- Anyone visiting for more than visiting: Working for a UK employer, studying beyond six months, joining a partner, getting married — none of that fits an ETA. Those routes run through a proper UK visa, applied for before you travel. The British Embassy in Washington anchors the UK's network in the US, though visa applications themselves are made online with a biometrics appointment.
- Refused an ETA? The visa route stays open: An ETA refusal isn't a travel ban — it redirects you to a Standard Visitor visa, where a caseworker reviews your circumstances in full. Travelers with a criminal record should consider going straight to the visa route rather than betting a nonrefundable £20 on the automated checks.
Layovers, enforcement and the other fine print
Connecting through London? It depends on whether you cross the border. If your connection stays airside — you don't pass through UK passport control between flights — you currently don't need an ETA, though the government can change this and airlines apply it unevenly, so check with your carrier before relying on it. The moment your itinerary has you landing in the UK and passing border control — separate tickets, a bag to re-check, an overnight layover — the ETA requirement applies in full.
Enforcement is real now. Through 2025 the requirement ran with a light touch while travelers adjusted. That grace period ended on 25 February 2026: carriers must now deny boarding to anyone without digital permission to travel. The failure mode isn't a fine on arrival — it's a canceled vacation at the departure gate in the US.
Two smaller notes that answer most remaining questions: the ETA has no minimum-passport-validity rule of its own (your passport simply needs to be valid for the trip, and the ETA dies when it expires), and the £20 covers permitted paid engagements — an invited lecture, say — plus up to three months under the Creative Worker concession, which is how touring musicians and crews typically enter.
Not for visits. US passport holders travel visa-free for tourism, family visits, business and short study — but since 8 January 2025 that visa-free entry requires an approved Electronic Travel Authorisation (ETA), applied for online before departure. Stays can run up to six months per visit.
£20 per person at the time of writing, and the fee is nonrefundable. Most applications are decided within a day, but allow up to three working days. You must have the approval email before you travel; airlines check at check-in.
Two years, or until the passport it's linked to expires — whichever comes first — with unlimited trips to the UK in that window, each visit up to six months. Renew your passport and you'll need a new ETA, whatever the old one had left.
GOV.UK — Electronic Travel Authorisation (ETA)
The UK government's official ETA guide: who needs one, what it permits, and the application itself.
GOV.UK — Check if you need a UK visa or ETA
The official checker: enter your nationality and travel purpose to confirm which permission your trip needs.
GOV.UK — Standard Visitor visa
The visa route for travelers an ETA doesn't cover — longer stays, refused applications, or purposes beyond visiting.
GOV.UK — 'No permission, no travel': ETA enforcement announcement
The official statement confirming full enforcement from 25 February 2026, with carriers checking before boarding.
Want the application filled in correctly the first time — passport details, photos and suitability questions checked before anything is submitted? Guided support gets the ETA done in one pass.
Apply for your UK ETA