Travel document basics
Travel authorisations and visas: what is the difference?
A practical guide to the documents travellers may need before departure, who decides an application, and what to verify before relying on an approval.
The short answer
A visa and a travel authorisation can both be required before travel, but they are not interchangeable. A visa is formal permission issued under a destination's immigration rules. A travel authorisation is usually a pre-travel screening requirement for people who can visit without obtaining a traditional visa.
The name of a document does not tell you whether you qualify. Nationality, destination, travel purpose, length of stay and sometimes residence status all matter. The relevant government authority makes the decision.
Primary sources: UK Government, U.S. Customs and Border Protection, European Commission
Common document types
Electronic visas are visas applied for online. An ETA or ESTA is generally an electronic travel authorisation. Arrival cards collect journey, contact, health or customs information and normally do not replace a visa or travel authorisation.
Some travellers need more than one document. For example, an approved travel authorisation may be needed alongside a valid passport, while a separate arrival declaration may be required closer to departure.
Primary sources: UK Government, U.S. Customs and Border Protection
Approval is not a promise of entry
An approved visa or authorisation generally permits travel to a border or port of entry. Border officers retain authority to check documents and decide admission under the destination's rules. Airlines and other carriers may also check that required documents appear valid before boarding.
Primary sources: U.S. Customs and Border Protection, European Commission
What to check before applying
Start with the destination government's official eligibility tool or visa pages. Check the permitted activities, passport rules, validity window, number of entries, maximum stay, fee and stated processing guidance.
- Use the exact nationality shown in your passport.
- Choose the document for your real travel purpose.
- Confirm whether children need separate applications.
- Check transit requirements for every connection.
- Keep the application reference and approval record accessible while travelling.
Primary sources: UK Government, U.S. Customs and Border Protection, European Commission
Where a private service fits
eVisa Immigration is an independent private service operated by Nova Group Sp. z o.o. We can help travellers understand document categories and prepare information, but we do not issue visas, make government decisions or provide personalised migration advice. Travellers can always use the relevant official government service directly where available.
Primary sources
Official pages reviewed on 13 August 2026. Check them again before you travel.