Flying to the UK? Mexicans without a UK ETA will be denied entry

iVisa

3 min read

Updated on Aug 22, 2025

Summary

Mexican passport holders must apply for a UK ETA before traveling – without it, airlines will deny boarding, and UK entry will be refused.
The ETA is not a visa but a digital travel authorization, valid for two years and required for tourism, business, and family visits.
Common mistakes include late applications, passport issues, and poor-quality photos – apply early to avoid delays or rejection.

From the start of 2025, Mexican travelers must apply for an Electronic Travel Authorization (ETA) before visiting the UK.

Without an approved ETA, you won’t be allowed to board your flight or enter the UK, even for short visits.

Apply now

What is the UK ETA, and why do Mexicans need it?

The UK ETA is a new digital entry requirement, not a visa, designed to strengthen border security.

Can Mexicans still travel to the UK without a visa?

Mexican passport holders don’t need a traditional visa for short stays, but the ETA is now mandatory for visits to England, Scotland, Wales, and Northern Ireland (not the Republic of Ireland).

If you’re just transiting through the UK, an ETA is not required.

💡 However, Mateo Martinez, travel blogger, says:

"The rules around whether you need a UK ETA if you're just transiting through keep changing, so it's worth double-checking before you fly."

Do I need a UK ETA to travel to the United Kingdom?

While most Mexican travelers require a UK ETA, that may not always be the case. To see whether you need a UK ETA or another UK travel document, we’ve created a tool to help you reach the UK worry-free.

How to apply for a UK ETA fast

Follow these steps to secure your UK ETA:

1️⃣ Submit your details: Apply via the UK government website or use our online platform or mobile app.

Provide personal and passport information, along with a clear digital passport photo.

2️⃣ Pay the ETA fee: Secure payment options include debit/credit cards, PayPal, and other flexible online methods.

3️⃣ Receive approval: Most applications are approved within 72 hours, though some are processed even faster.

Once approved, the ETA is electronically linked to your passport, so there’s no need to print anything.

How long can Mexicans stay in the UK with an ETA?

The UK ETA allows Cypriot visitors to stay for up to six months per visit for tourism, business, or family visits.

It's valid for two years or until your passport expires, whichever comes first. A new passport means reapplying for the ETA.

How much does a UK ETA for Mexicans cost?

The price of your UK ETA will depend on how you apply and how quickly you want to receive it. Use this handy tool to get an instant breakdown of the fees based on your preferences.

Common mistakes Mexicans should avoid (with expert tips)

Many travelers make simple mistakes that delay their ETA approval. Here’s what to watch out for:

⚠️ Common mistake	✅ Solution
Not checking passport validity	Ensure your passport is valid for your entire trip
Applying too late	Submit your ETA application at least one week before departure
Uploading a low-quality photo	Use a clear, high-resolution passport-style photo

Find out the top reasons for UK ETA rejections.

💡 Andreas Christoforou, immigration lawyer, advises:

"Mexicans should apply well in advance, especially during peak travel times like summer. Many don’t realize last-minute applications can be risky."

Other important UK entry rules

Even with an ETA, travelers should be aware of additional UK entry regulations:

Proof of onward travel – You may need to show your return ticket.
Customs restrictions – Be mindful of duty-free allowances and prohibited items.