An e-visa or an electronic travel authorisation is a digital record linked to your passport number, not a sticker inside the document. You apply online, the authority checks your details in its own systems, and the outcome is stored against that passport. The airline reads the record at check-in, and a border officer still makes the final call when you arrive.
What the digital record actually contains
The UK government describes an eVisa as a digital record of your identity and immigration status: the type of permission you hold, plus its conditions, such as whether you are allowed to work or study. The record sits in a government account rather than on a page, so you prove it by signing in and, where a check is needed, sharing a code. The same guidance states that eVisas have replaced physical immigration documents, while visa stickers already issued remain valid until they expire.
A travel authorisation applies the same idea to short visits. The UK electronic travel authorisation allows travel for up to six months for tourism, visiting family or certain other reasons. The guidance is blunt about one point that travellers often miss: holding one does not guarantee entry.
An ETA does not guarantee entry to the UK, Jersey, Guernsey or the Isle of Man.
Both models hang on one matching detail, the passport number. Renew the passport and the link has to be updated, or the record and the document stop agreeing exactly where it matters most, at the airport.
The three checks between application and boarding
- Eligibility and security checks. The issuing authority compares what you declared with its own records and decides whether to grant the authorisation. The form shows what information is required, but not the internal checks behind the decision.
- The airline’s document check. Carriers are expected to confirm that each passenger holds documents valid for the route before boarding. Many of them rely on a database such as IATA Timatic. According to IATA, more than 700 million passenger travel documents are checked through Timatic each year, with input from over 2,000 government and airline officials and up to 200 rule changes a day.
- The border decision. An approval is permission to travel. Admission is decided on arrival, and an officer can still ask about purpose, length of stay and funds.
Why applications stall or get refused
- Name mismatch. The name has to match the passport, including the spelling used in the machine readable zone and any middle names left out of the form.
- A new passport. The authorisation stays tied to the previous number until the details are updated.
- Lookalike websites. The UK guidance warns that other sites may charge more to apply and tells applicants to avoid websites that imitate government services.
- Group applications. Every traveller needs their own authorisation, including babies and children, even when one person submits all the forms.
- Transit. Passing through border control at an airport before an onward flight counts as entering, and the guidance says an authorisation is needed for that landside transit.
What to confirm before you fly
- Check the status on the official portal yourself instead of trusting a confirmation email.
- Confirm the passport number on the record matches the passport you will carry.
- For an eVisa, add your passport or travel document details to the account first, since the guidance makes that step part of travelling with it.
- Re-check the rules for every country on the route, including the one you transit through, because requirements change without much notice.
- Keep the reference number somewhere you can open offline in case airport wifi fails.
Comparing the three documents
| Document | Format | Tied to passport | Grants entry |
|---|---|---|---|
| eVisa | Digital record in a government account | Yes | No |
| Travel authorisation | Short online permission for visitors | Yes | No |
| Visa sticker | Physical page in the passport | Yes | No |
The official references are the UK guidance on the gov.uk travel authorisation and on gov.uk eVisas, plus IATA’s description of its document service on iata.org.
Bottom line: an e-visa or travel authorisation is a database entry, not a guarantee of entry. Treat the passport number as the thread that holds the whole thing together, verify the record on the official site before departure, and expect the border to make its own decision on the day.