The United Kingdom has officially confirmed that its Electronic Travel Authorisation (ETA) system will become fully mandatory from 25 February 2026. The message is simple and strict: “no permission, no travel.” Anyone from the 85 visa-exempt countries who wants to visit the UK for tourism, business trips, or short stays will need to secure an ETA before boarding a flight. This change marks the end of the transition period that has been running since 2023, when the system was first introduced.

An ETA is a quick online travel clearance that links digitally to a traveller’s passport. It is not a visa, but it works as a pre-travel security check to ensure that people are cleared before they arrive at the border. The UK government says the move will create a smoother, more digital border experience while allowing authorities to identify potential threats even before they board a plane. According to official data, more than 13 million travellers have already applied for an ETA since its rollout began.

From 2026 onwards, airlines and other travel carriers will have to verify that passengers hold a valid ETA before allowing them to board. If a traveller arrives at the airport without one, they risk being denied boarding instantly. This puts the responsibility on travellers to apply in advance instead of depending on leniency at immigration.

The ETA application process is designed to be simple and low-cost. Travellers can apply online or through the official “UK ETA” mobile app for a fee of £16. The form requires passport information, a short digital photo, and basic personal details. Most people receive approval within minutes, although the Home Office advises allowing up to three business days in case of extra security checks. Once approved, the ETA is generally valid for multiple trips over two years or until the passport expires.

ETA Required Countries Table (85 Countries)

The mandatory requirement covers visitors from 85 countries, including the United States, Canada, Australia, New Zealand, Japan, South Korea, and all EU countries. British and Irish citizens are exempt, as are people who already hold UK visas or residence permits. Dual nationals who hold a British passport must travel using their British passport to avoid being asked for an ETA.

For frequent travellers, this system is similar to the American ESTA or Canada’s eTA—quick, digital, and designed to streamline border entry. The UK’s version aims to make travel faster and safer by managing immigration data in advance. It also helps avoid long queues at UK airports, especially during peak tourism seasons.

Anyone planning a trip is strongly encouraged to apply early, ideally a few days before departure. Each traveller, including children and infants, needs a separate application. It’s also important to avoid unofficial websites that charge higher fees; the UK government recommends applying only through the official GOV.UK portal or the official mobile app.

With global travel becoming increasingly digital, the UK’s fully enforced ETA system represents the next big step in modern border control. For travellers, the takeaway is straightforward: plan ahead, apply early, and secure your ETA before booking your ticket. Once done, your trip to the United Kingdom should be smoother, faster, and hassle-free.