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Short answer: yes. As of April 2025, US citizens need a UK Electronic Travel Authorisation (ETA) to visit the United Kingdom for short stays, and since February 25, 2026, the requirement is strictly enforced. No ETA, no flight.
If you're an American planning a trip to London, Edinburgh, Manchester, or anywhere else in the UK, this guide covers what you need to know, how to apply, and the specific situations that trip up US travelers.
The UK ETA is the UK's equivalent of the US ESTA. It's a digital travel authorisation tied to your passport. You apply online or through the UK ETA app, pay £20 (roughly $26 USD at current exchange rates, though this fluctuates), and in most cases get approved within minutes.
Once approved, your ETA is valid for two years or until your US passport expires, whichever comes first. You can make multiple trips to the UK on the same ETA, with each visit up to 6 months long.
It's not a visa. It's a pre-travel security screening, very similar in concept to ESTA. If you've applied for ESTA to visit Europe or done the Canadian eTA, the UK ETA will feel familiar.
Yes, with a few exceptions.
You need a UK ETA if you're traveling to the UK on a US passport for tourism, family visits, short business trips, or short courses under 6 months. That covers the vast majority of American travelers.
You don't need a UK ETA if any of these apply:
Every other US citizen traveling to the UK needs an ETA, including infants and children on US passports. There's no family application. Your 6-month-old needs their own ETA, tied to their own US passport.
Until recently, US citizens could fly to the UK with just a passport, no advance paperwork required. That changed as part of the UK's phased rollout of the ETA scheme, which mirrors similar systems the US, Canada, and Australia have had for years.
US citizens were added to the requirement on January 8, 2025. For about a year after that, enforcement was soft, meaning airlines didn't always check. That ended on February 25, 2026. Now, if you show up at Newark, JFK, O'Hare, LAX, or any other US airport for a flight to London without a valid ETA, the airline won't let you board.
This is important to internalize: the enforcement happens at the gate in the United States, not at UK Border Force on arrival. If you forgot to apply for an ETA, you're not getting on the plane.
The application process is straightforward. You have two options:
The UK ETA app, available free on the iOS App Store and Google Play. This is the smoother route for most US travelers because your phone can:
The GOV.UK website, which works if you don't have a compatible phone or if you're applying on behalf of someone who isn't with you.
Either way, you'll need:
A practical note on the fee: you're paying in British pounds, not dollars. Most US credit cards handle this fine, though some charge a small foreign transaction fee. Cards marketed for international travel (Chase Sapphire Preferred, Capital One Venture, most airline-branded cards) typically don't.
Most US applicants get an automatic approval by email within minutes. Some applications need a closer look by a UK Home Office caseworker, in which case the Home Office asks you to allow up to three working days.
The official advice is to apply at least three working days before you travel. For peace of mind, applying a week or two before your flight is smart, especially during summer and holiday travel seasons when application volume spikes.
Don't apply at the airport. If anything needs manual review, you'll miss your flight.
A few scenarios specific to American travelers worth flagging.
Your ETA is linked to the specific passport you applied with. If you renewed your passport or got a new one for any reason after applying, your existing ETA is invalid. You need a new one.
This catches a lot of US travelers who applied early, then had to renew a passport that was getting close to expiration before their trip. Always apply against the passport you plan to actually travel with.
The ETA is valid for two years or until your passport expires, whichever comes first. If your US passport expires in 10 months, your ETA effectively only lasts 10 months even though you paid the same £20.
If you're planning frequent UK travel and your passport is near expiration, renew first, then apply for the ETA against the new passport. You'll get the full two years.
No. US trusted traveler programs are separate from UK immigration. PreCheck and Global Entry help you in US airports. They don't affect UK entry requirements in any way. You still need an ETA.
Many US travelers visited the UK in 2023, 2024, or even early 2025 without needing an ETA, because the requirement didn't apply to Americans yet. That doesn't carry forward. For any trip starting from April 2, 2025 onward, you need an ETA. For any trip starting after February 25, 2026, you need it or you're not flying.
This is a grey area that US travelers increasingly run into. The ETA covers tourism, family visits, business meetings, and similar activities. It does not cover working for a UK employer or living in the UK.
Remote work for your US employer while visiting the UK falls into an ambiguous middle. If you're in the UK for two weeks and happen to answer emails from your hotel, nobody is going to care. If you're planning to "live in London for a few months and work remotely for my US company," you're getting into territory that Border Force may question. When in doubt, keep visits clearly short and tourism-oriented, or look at a visa route that explicitly covers your situation.
Minor, old US convictions often don't affect ETA approval, but the application asks direct questions about criminal history, and you must answer them honestly. Lying on the application is itself grounds for refusal and creates bigger problems down the line.
If you have any significant criminal history, particularly recent or serious offences, it's worth consulting a UK immigration lawyer before applying. In some cases, a Standard Visitor Visa (which involves a caseworker assessment rather than automated screening) may be the more appropriate route.
If you're flying into Dublin and then taking a train or bus to Belfast, you've entered the UK (Northern Ireland) via the land border. The legal framework for this is complicated, but in practice, you should have a valid ETA before any UK trip, including one that enters via Ireland.
From April 23, 2026, the same ETA also covers travel to Jersey, Guernsey, and the Isle of Man. If you already have a valid UK ETA, you don't need to apply for a separate one to visit these destinations. If you're flying direct from the US to Jersey, you still need your ETA.
In the current enforcement regime, the airline will refuse to board you. The check happens when you present your US passport for your UK-bound flight.
If you realize at the airport that you don't have an ETA, you can try applying on the spot through the app. If you get an automatic approval in minutes (which is the common outcome), you're fine. If your application goes to manual review, you're going to miss your flight, and there's no real workaround.
This is why the "apply at least three working days before" advice exists. Don't cut it close.
Yes, US citizens need a UK ETA to visit the United Kingdom. It costs £20, takes about 10 to 15 minutes to apply for, is usually approved within minutes, and lasts two years or until your passport expires. Apply through the UK ETA app or GOV.UK. Apply against the passport you'll actually travel with, apply at least a few days before your flight, and answer the questions honestly.
Once it's approved, you can make multiple trips to the UK for the next two years without applying again. For most American travelers, it's a one-time task that then fades into the background for the rest of the ETA's validity period.
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