10 Common UK ETA Application Mistakes to Avoid

Quick answer: The UK Electronic Travel Authorisation (ETA) is a digital permission to visit the UK for short stays — tourism, business, study, or transit. It's not a visa, but you need one before you travel if you're from a visa-exempt country (like the US, Canada, Australia, or Japan). The application is online, costs £20, and usually takes minutes. But small errors can derail your trip.

In 2026, a major UK ETA system outage grounded hundreds of travellers. Many had applied just hours before departure and couldn't board. Others had name mismatches or didn't check their status in time.

The outage showed that even a simple online process has pitfalls.

This guide covers the 10 most common UK ETA application mistakes — and how to avoid them. Whether you're a first-time applicant or renewing, these tips will save you stress at the border.

1. Applying Too Close to Your Travel Date

The UK government recommends applying for an ETA at least 72 hours before you travel. During normal times, most applications are approved in minutes. But the 2026 outage proved that's not guaranteed.

During the outage, the system was down for over 24 hours. Travellers who applied the night before their flight couldn't get approval in time. Airlines refused to let them board without a valid ETA.

Don't gamble on instant approval. Apply as soon as you book your flights — ideally a week or more before departure. If you're a frequent traveller, remember that an ETA is valid for two years or until your passport expires, whichever comes first. So you can apply well in advance.

Why 72 Hours Is a Minimum, Not a Target

The 72-hour window is the absolute minimum processing time the UKVI recommends. In practice, many applications are approved within minutes. But system glitches, payment failures, or manual checks can delay approvals for days.

For example, a traveller from Canada applied 48 hours before a flight in early 2025. The system flagged a minor inconsistency in their name spelling. The application went into manual review and wasn't approved until 36 hours later — just 12 hours before departure.

They had no buffer for errors.

Applying a week or more ahead gives you time to fix problems. If you're travelling for a wedding or business meeting, apply as soon as you have your itinerary. A rejected ETA can mean missed flights and non-refundable bookings.

2. Name Mismatch Between ETA and Passport

Your ETA is linked to your passport number, but the name on your application must match your passport exactly. Even a small difference — like a missing middle name, a hyphen that should be a space, or a swapped surname — can cause rejection.

After the 2026 outage, many travellers discovered that their ETA had been approved but with a minor name error. At the airport, the airline's system flagged the mismatch, and they were denied boarding.

Double-check your name exactly as it appears on your passport. If your passport has a middle name, include it. If it uses a hyphen, use it. Don't abbreviate or leave anything out.

The same applies to your date of birth and passport number — one typo and you're stuck.

Common Name Formatting Pitfalls

Passports from different countries handle names differently. Some include a separate "given names" field; others combine first and middle names. Always copy the name exactly as it appears in the passport's machine-readable zone (the two lines at the bottom).

For example, a traveller named "John Michael Smith" on their passport might type "John Smith" on the ETA form. That's a mismatch. Similarly, "Anne-Marie" with a hyphen should not be entered as "Anne Marie" with a space.

The system treats hyphens and spaces differently.

If your passport uses special characters like ñ, ü, or é, enter them exactly as shown. The UKVI system supports these characters. If you can't type them, use the closest standard letter (e.g., "n" for "ñ") — but this may cause a mismatch.

When in doubt, contact UKVI before applying.

3. Not Checking Your ETA Status Before Departure

You can check your ETA status online on the UKVI website at any time. It's a simple step that takes 30 seconds. Yet many travellers skip it and only discover a problem at the airport.

During the 2026 outage, some travellers had applied days earlier and assumed their ETA was approved. They didn't check. When they arrived at the airport, they found their application was still pending — or had been rejected due to a system error.

Make it a habit to check your ETA status the day before you travel. If there's an issue, you have time to reapply or contact UKVI. The check is free and fast. Bookmark the official UKVI ETA status page.

How to Check and What to Look For

Go to the official UKVI ETA status page and enter your passport number and date of birth. The system will show one of three statuses: "Approved," "Pending," or "Refused." If it's "Approved," you're good to go. If it's "Pending," don't assume it will resolve before your flight.

A pending status can mean the application is in manual review. This can happen if your name matches a watchlist, or if there's a technical issue. Contact UKVI immediately if your status is pending within 48 hours of travel.

They may be able to expedite the review.

If your status is "Refused," you'll see a reason code. Common reasons include criminal history or overstaying a previous visit. You cannot appeal, but you can reapply if the issue was a typo.

For substantive refusals, you may need a visa instead.

4. Ignoring Dual Nationality Rules

If you hold two passports, you need to be careful. The UK ETA is tied to the passport you use to travel. You must apply using the passport you intend to present at the border.

And you must declare all your nationalities truthfully.

Some dual nationals think they can apply with their 'easier' passport and then travel on another. That's a mistake. The UKVI system checks your details against immigration records.

If you declare only one nationality but hold another, your application can be refused.

For example, if you're a US-Canadian dual national, you can apply with either passport. But you must list both citizenships on the application. Failing to do so is considered a false declaration and can lead to a ban.

Read our full guide on uk eta dual nationality rules to get it right.

Which Passport Should You Use?

Use the passport you will actually travel with. If you plan to enter the UK on your US passport, apply with that passport. But you must still declare your Canadian citizenship.

The UKVI wants to know all nationalities you hold, regardless of which passport you use.

Some dual nationals worry that declaring a second nationality will complicate their application. In reality, the UKVI already has access to global immigration databases. Hiding a nationality is far more risky than declaring it.

If you're found to have omitted a citizenship, your ETA can be revoked and you may be banned from future applications.

For triple nationals, the same rule applies: declare all citizenships. The application form has a field for additional nationalities. Use it.

If you're unsure how to answer, consult the official UKVI guidance or our dedicated dual nationality page.

5. Applying for the Wrong Type of Travel Permission

The UK ETA is for short visits — tourism, business meetings, study up to 6 months, and transit. It's not a visa and doesn't allow work (except limited business activities). Some travellers apply for an ETA when they actually need a visa.

If you plan to work in the UK, study for more than 6 months, or get married, you need a visa, not an ETA. Applying for an ETA in these cases is a mistake that can lead to refusal and a wasted fee.

Check the official UKVI eligibility criteria before you apply. The uk eta application requirements page lists exactly who can use an ETA and what activities are allowed.

Activities That Require a Visa, Not an ETA

The ETA permits "permitted paid engagements" like giving a one-off lecture or performing at a festival. But it does not allow regular employment, self-employment, or working for a UK company. If you're a digital nomad working remotely for a non-UK company, an ETA is usually fine — but check the latest rules.

Other activities that need a visa include: studying a full-time course longer than 6 months, getting married or registering a civil partnership, and joining a family member as a dependent. Applying for an ETA in these cases will result in refusal and a note on your immigration record.

If you're unsure, take the UKVI's online "Check if you need a UK visa" tool. It asks a few questions and tells you the correct permission. Don't guess — the wrong application can delay your travel by weeks.

6. Using an Expired or Damaged Passport

Your ETA is linked to your passport number. If your passport expires, your ETA expires with it — even if the ETA's two-year validity hasn't ended. You must get a new ETA with your new passport.

Also, if your passport is damaged — torn pages, water damage, or a broken chip — it may not be accepted at the border. The ETA might be valid, but if the passport is unreadable, you'll be refused entry.

Always apply with a valid, undamaged passport. If you renew your passport, apply for a new ETA. Don't try to travel with an old passport that still has a valid ETA — it won't work.

What Counts as "Damaged" for Border Control

Border officers are trained to spot damaged passports. Common issues include: a torn or missing page, water stains that obscure personal details, a broken or missing RFID chip, and a bent or creased photo page. Even a small tear near the spine can make a passport invalid.

If your passport has minor wear and tear, like a slightly frayed edge, it's usually fine. But if the damage affects the machine-readable zone (the two lines at the bottom), the ETA may not link correctly. When in doubt, renew your passport before applying for an ETA.

Remember: if you renew your passport, your old ETA is automatically invalid. You must apply for a new ETA with the new passport number. The fee is £20 again, but it's better than being denied boarding.

7. Not Understanding Multiple Entry Rules

A UK ETA is valid for multiple entries within its two-year validity (or until your passport expires). You can enter the UK as many times as you like, for stays up to 6 months each time. But there are limits.

Some travellers think they can live in the UK by making short trips back and forth. That's not allowed. The ETA is for visits only.

If you spend more time in the UK than outside, border officers may suspect you're residing illegally and refuse entry.

Also, if you leave the UK and return the same day, it counts as a new entry. That's fine, but repeated short trips can raise questions. For full details, see our guide on uk eta multiple entry.

The "6-Month Rule" and Cumulative Stays

The ETA allows stays of up to 6 months per visit. But there's no official "cooling-off" period between visits. In practice, border officers look at your overall travel pattern.

If you spend 5 months in the UK, leave for 2 weeks, and return for another 5 months, they may question whether you're genuinely visiting.

To avoid issues, ensure you spend more time outside the UK than inside. A good rule of thumb: for every 6 months in the UK, spend at least 6 months outside. If you're a frequent traveller, keep records of your entry and exit dates.

Also note that the 6-month limit is per visit, not per year. You could theoretically enter for 6 months, leave for a day, and return for another 6 months — but this would likely trigger a review. Use the ETA as intended: for genuine short-term visits.

8. Forgetting to Renew Your ETA

An ETA is valid for two years or until your passport expires — whichever comes first. After that, you need a new one. There's no renewal process; you simply submit a fresh application.

Some travellers assume their ETA auto-renews. It doesn't. If you travel after your ETA expires, you'll be denied boarding.

Set a reminder in your calendar a month before expiry.

If your passport is renewed, your ETA is invalidated immediately. You must apply for a new ETA with the new passport. Don't wait until the airport.

Our uk eta renewal page explains the process.

Tracking Your ETA Expiry Date

Your ETA approval email includes the expiry date. Save this email or note the date in your calendar. If you can't find the email, check your ETA status online — it shows the expiry date.

Set a reminder 30 days before expiry so you have time to reapply.

If you travel frequently, consider applying for a new ETA as soon as the old one expires. The process takes minutes, and the £20 fee is small compared to the cost of a missed flight. Don't wait until you're at the airport to discover your ETA has expired.

For those with multiple passports, remember that each ETA is tied to a specific passport. If you renew one passport, the ETA for that passport is invalid. But if you have a second passport with a valid ETA, you can still travel on that one — as long as you use it for entry.

9. Providing Incorrect or Incomplete Information

The ETA application asks for personal details, passport info, and a few security questions. Any mistake — even a typo in your email address — can cause delays or refusal. Common errors include:

• Wrong passport number (check twice)
• Incorrect date of birth (day/month mix-up)
• Misspelled name (especially with special characters like ñ or ü)
• Wrong nationality selection (if you have dual citizenship)
• Incomplete travel history (you must list recent visits to conflict zones or certain countries)