Your passport nationality and how you’re arriving determine which document you need. Not cost, not processing speed, not what you wish were true. Everything else follows from that one rule. For sea arrivals, see Canada eTA for cruise and ferry passengers.
To make that concrete: two travellers board the same flight from London to Toronto, both planning a two-week holiday, both carrying valid passports. One holds a British passport and needs an eTA (electronic travel authorization) before check-in even opens. The other holds a Moroccan passport and, depending on one additional factor, may also qualify for an eTA, or may need a full visitor visa. Same flight, same purpose, different answers, because the rule starts with the passport.
The question of which document applies to you has a short answer: find your passport country on the official list, then check how you’re arriving. The rest of this article walks each path in full, including the one exception that sends travellers down the wrong road.
The One Rule That Decides Everything
Three factors determine your entry document: your citizenship, your mode of arrival (air, land, or sea), and whether you hold any special status such as a US green card or, for international students holding a US visa, a current US nonimmigrant visa. Travel purpose does not change the document. Length of stay does not change the document. Whether you’re visiting for three days or three months, the same logic applies.
| eTA | Visitor Visa | |
|---|---|---|
| Who uses it | Citizens of visa-exempt countries (by air); select visa-required nationals flying to Canada | Citizens of visa-required countries (by any mode); select visa-required nationals arriving by land or sea |
| How it’s issued | Electronically, linked to your passport | Varies by visa type and country of application |
| Application effort | Online form; most decisions arrive within minutes, some take several days | Online or paper form, plus biometrics (fingerprints and photo) at a visa application centre |
| Validity | Tied to the passport it was issued on | Varies by individual approval |
| Guarantees entry? | No | No |
That last row matters and is covered properly at the end. For now, follow your path.
Path 1: You’re Visa-Exempt and Flying
Citizens of visa-exempt countries need an eTA to board any flight to Canada, including connecting flights. The eTA is checked at airline check-in, before you reach Canadian soil. If you don’t have one, you don’t board. Nationality-specific questions come up here too — for example, whether Dutch passport holders need an eTA follows this same visa-exempt-and-flying rule, and so does the eTA for Italian citizens, Spanish citizens, Swiss citizens and Swedish citizens.
The eTA is linked electronically to the specific passport you used when applying. That passport must be the one you present at check-in. If you’ve renewed your passport since applying, the old eTA doesn’t transfer: you need a new one tied to the new passport. For more on what happens when your passport details change after approval, there’s a dedicated piece on Canada eTA after passport details change.
Most decisions arrive within minutes of submitting. Some take several days. Apply before you book a non-refundable flight, not the night before departure. If you want to start your eTA application, have your passport, email address, and payment method ready before you begin.
Transit counts too. If your itinerary routes through a Canadian airport on the way to a third country, an eTA is still required for that stop.
Path 2: You’re Visa-Exempt and Arriving by Land or Water
This is where many travellers are surprised. If you hold a passport from a visa-exempt country and you’re crossing into Canada by car, bus, train, or boat (including cruise ships), you do not need an eTA. A valid passport is sufficient.
The one narrow exception: if you’re arriving by sea specifically from Saint-Pierre-et-Miquelon (the small French archipelago off Newfoundland), and not on a cruise ship, an eTA is required to board your vessel. This catches almost no one, but it’s absolute.
For the vast majority of visa-exempt travellers arriving overland from the US or by cruise ship: passport, no eTA. That covers the classic walk across the Rainbow Bridge to Niagara Falls, Ontario as well.
Path 3: You’re from a Visa-Required Country
Citizens of visa-required countries need a valid visitor visa and a valid passport to enter Canada, regardless of whether they’re flying, driving, or arriving by sea. The visitor visa application requires biometrics in most cases: fingerprints and a photo, given in person at a visa application centre. That step adds time and logistics that an eTA application doesn’t require, so factor it into your planning.
If you’re transiting through a Canadian airport on your way to a third country, a transit visa is required unless you hold a valid visitor visa or qualify for an eTA. The transit visa applies when your layover is 48 hours or less and you’re connecting between two international flights.
There is a separate program called Transit Without Visa (TWOV) for passport holders from China, Indonesia, Philippines, Thailand, and Taiwan (without a personal identification number). Under TWOV, eligible travellers can transit without a visa if they hold a valid US visa, have a confirmed onward ticket leaving Canada within 24 hours, are travelling with a participating airline through specific Canadian airports, and remain in the international transit area throughout. It’s a narrow set of conditions, and all of them must be met simultaneously.
The Exception: Select Visa-Required Nationals Flying to Canada
This is the path that generates the most confusion, because it breaks the clean visa-required/visa-exempt divide.
Citizens of the following countries are visa-required in general, but may be eligible to apply for an eTA instead of a visitor visa if they are flying to Canada: Antigua and Barbuda, Argentina, Brazil, Costa Rica, Indonesia, Malaysia, Mexico, Morocco, Panama, Philippines, St. Kitts and Nevis, St. Lucia, St. Vincent and the Grenadines, Seychelles, Thailand, Trinidad and Tobago, and Uruguay.
The air-only condition is hard. A Mexican passport holder who flies into Vancouver qualifies for the eTA path. The same person driving into Canada from the US, say across the bridge at Niagara Falls, needs a visitor visa. An Indonesian passport holder transiting through Toronto Pearson on a connecting flight can use an eTA. The same person arriving on a cruise ship bound for Alaska cannot.
If you hold one of these passports and you’re planning to fly, the eTA is the right document. If any part of your journey involves land or sea entry into Canada, you need a visitor visa for that leg—even if you already hold an eTA for the air portion. The one exception: if you are already in Canada, you can go directly to the US or Saint-Pierre and Miquelon and come directly back within your authorized stay without a visa.
What If You’re Canadian, a Permanent Resident, or a US Citizen
Canadian citizens and Canadian permanent residents need neither a visa nor an eTA to enter Canada. Canadian permanent residents should carry their PR card when flying, as airlines may ask for it.
US citizens also need neither document, regardless of how they arrive. A valid US passport is typically used for entry.
US lawful permanent residents (green card holders) occupy a distinct category. Flying into Canada requires both a valid passport from their country of nationality and a valid green card. Arriving by land or water directly from the US or Saint-Pierre-et-Miquelon, a green card alone (or equivalent valid proof of status) is sufficient, and a passport is not required. For a fuller breakdown of how this works in practice, the article on Canada eTA for US green card holders covers the specifics.
When Your Situation Changes Before You Travel
If you’re a visa-exempt traveller and you renew your passport after getting an eTA, the eTA doesn’t carry over. Apply for a new one before your flight. If your nationality changes (through naturalisation or a second citizenship), the document requirement is determined by the passport you travel on, not the one you hold in a drawer. Dual citizens who hold both a Canadian and a foreign passport should travel on the Canadian one, which requires no eTA or visa at all. There’s a separate article on which passport to use as a dual citizen if that applies to you.
What Neither Document Guarantees
An approved eTA and a valid visitor visa both authorise you to travel to Canada. Neither one guarantees that you’ll be allowed in. A border services officer makes the final decision at the port of entry, assessing whether you meet all entry requirements, whether you’ll leave at the end of your stay, and whether you have sufficient funds. Grounds for inadmissibility include criminal history, security concerns, health grounds, and financial concerns.
This is not a technicality—it’s a live check. Travellers with criminal records, including convictions that might seem minor in their home country, can be turned back even with a valid visa or eTA in hand. If there’s anything in your background that might be relevant, the Canada.ca admissibility pages are the place to read the rules before you travel, not at the border.