Canada's Electronic Travel Authorization (eTA) catches out more travellers than most entry requirements, not because it's complicated, but because of one specific rule: it only applies when you're arriving by air. Visitors crossing overland from the US, or arriving by sea, follow a different process entirely. Here's who actually needs an eTA, how the application works, and where the air-only distinction matters most.
What the eTA is — and the one rule that trips people up
The eTA is an electronic pre-screening authorisation linked to your passport, required for citizens of visa-exempt countries who are flying into Canada. It is not a visa — citizens of countries that need a full Canadian visa still apply for that visa through the standard route, and the eTA doesn't change or replace that requirement.
Who needs a Canadian eTA
Citizens of countries with a visa-exempt arrangement with Canada, flying into the country, generally need an eTA. This includes most EU member states, the UK, Australia, New Zealand, Japan, South Korea and a number of others — the full current list is maintained by the Government of Canada and updated periodically, so it's worth checking your specific nationality rather than relying on a previous trip's experience.
US citizens are a notable exception — they do not need an eTA at all, regardless of how they enter Canada, travelling on just their US passport. Canadian permanent residents use their Permanent Resident card instead of an eTA. If your nationality requires a visa to enter Canada rather than being visa-exempt, the eTA doesn't apply to you at all — you need that visa instead. See our guide to how to check visa requirements for any trip if you're unsure which category applies to you.
How to apply
The application is completed entirely online at canada.ca/eta, the official Government of Canada site — a point worth emphasising, since a number of unofficial third-party sites charge additional service fees for a process the government offers directly, in much the same way unofficial sites shadow the US ESTA application. You'll need:
- A valid passport from an eTA-eligible country, since the authorisation is linked directly to that passport's number.
- A payment card for the government application fee.
- A valid email address.
- Basic personal and travel details.
Most applications are approved within minutes, though the Government of Canada advises allowing up to 72 hours in case additional review is required. Apply at least a few days before your flight, and earlier still if you're planning to book non-refundable travel and want certainty first.
Once approved, the eTA is valid for five years, or until your passport expires, whichever comes first, and covers multiple trips within that window without needing to reapply — provided nothing about your circumstances or passport has changed. A new passport means a new eTA application, since it's tied to the specific passport number rather than to you as a traveller.
What the eTA allows
An approved eTA permits stays of up to six months per visit, for tourism, visiting family or friends, or short-term business activities such as attending a conference. It does not permit taking up paid work or studying in a full-time programme — those require a separate work permit or study permit, applied for and approved before you travel. The eTA is also not a pathway to residency and doesn't guarantee entry on its own; the final decision rests with the border officer you meet on arrival. Check your passport's remaining validity before applying, since it needs to comfortably outlast your planned stay.
Arriving in Canada
Most major Canadian international airports use Primary Inspection Kiosks, where arriving passengers complete a digital customs and immigration declaration, provide biometric data (a photograph and, in some cases, fingerprints), and then speak with a Canada Border Services Agency (CBSA) officer who reviews the declaration and may ask about the purpose and length of your visit. Having a valid eTA does not remove this step or guarantee entry — the CBSA officer makes the final call and can limit your permitted stay or refuse entry if they aren't satisfied the visit is genuine.
If the officer allows less than the standard six months, that shorter period — sometimes noted in your passport or in the digital entry record — is what applies, not the general eTA allowance. If you need longer than what's granted, you must apply to Immigration, Refugees and Citizenship Canada (IRCC) before that period expires; extending at the border itself isn't possible.
Entering by land or sea instead
Since the eTA specifically covers air arrivals, visitors entering Canada overland — most commonly by car from the United States, sometimes as part of a wider driving trip through Canada — or by sea follow a different process, generally presenting their passport directly to a CBSA officer at the crossing point rather than needing pre-approval through the eTA system. Rules and required documentation can still vary by nationality and method of entry, so check the Government of Canada's current guidance for your specific route rather than assuming the land-border process mirrors the air one.
Transit through Canada
Even if you're only connecting through a Canadian airport without formally entering the country, some transit passengers still need an eTA or a transit visa depending on nationality and the specifics of the connection — this isn't automatically waived just because you're not leaving the airport. See our guide to transit visas explained for how this works more broadly, and check the CBSA's transit guidance for your nationality and itinerary before assuming a same-day connection is exempt.
Frequently asked questions
Do I need an eTA if I'm driving into Canada from the US?
Generally no — the eTA applies specifically to arrivals by air. Land border crossings typically involve presenting your passport directly to a CBSA officer instead. Confirm the current rule for your nationality before travelling, as the specifics can vary.
Do US citizens need a Canadian eTA?
No. US citizens are exempt from the eTA requirement regardless of how they enter Canada, and travel on their US passport alone.
How long is a Canadian eTA valid for?
Five years from approval, or until your passport expires, whichever comes first. It covers multiple trips within that period without needing a new application, provided your passport and circumstances stay the same.
Can I extend my stay in Canada beyond what the border officer grants?
Yes, but only by applying to Immigration, Refugees and Citizenship Canada (IRCC) before your current permitted stay expires — it cannot be extended at the border itself, and the eTA's five-year validity has no bearing on how long a single visit can last.
Sources and further reading:
- Official eTA application and eligibility: Government of Canada (canada.ca/eta).
- Arrival procedures: Canada Border Services Agency (cbsa-asfc.gc.ca).
- Always confirm current requirements with your own government's travel advice before travelling.