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Travelling as a Dual Citizen: Which Passport Should You Use?

Confused about which passport to travel on as a dual citizen? Here's the general rule for entering Canada and your other country, plus key exceptions.

Immigration5 min readTSLBy the Treadstone Law team · OntarioUpdated 2026-07
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Key takeaways
  • The most reliable default is straightforward: use your Canadian passport when entering and exiting Canada, and use your other country's passport when entering and exiting that country.
  • As a matter of Canadian practice, Canadian citizens are generally expected to present a valid Canadian passport when boarding a flight to Canada and when clearing the border into Canada,…

Holding two passports sounds like it should make travel easier, and in many ways it does — but it also raises a question that catches a lot of dual citizens off guard: which passport do you actually present at the border? Get it wrong, and you can face anything from an awkward conversation with a border officer to a genuine legal problem in the other country.

If you're a dual citizen deciding which passport to use, the short answer is that the choice usually isn't yours to make freely — both countries generally expect their own citizens to use their passport when dealing with that country.

The General Rule: Enter and Exit Each Country on Its Own Passport

The most reliable default is straightforward: use your Canadian passport when entering and exiting Canada, and use your other country's passport when entering and exiting that country. This isn't just a formality — many countries, Canada included, expect their citizens to identify themselves as citizens, not merely as visitors, when crossing their own border.

Why Canada Expects Its Citizens to Travel on a Canadian Passport

As a matter of Canadian practice, Canadian citizens are generally expected to present a valid Canadian passport when boarding a flight to Canada and when clearing the border into Canada, even if they're also carrying a foreign passport. Airlines checking pre-boarding documentation, and border officers on arrival, are typically looking for the Canadian passport specifically once they know a traveller holds Canadian citizenship.

This expectation exists regardless of which passport got you to the airport gate on the other end of your trip.

What About the Other Country? Check Its Rules Too

This is where things get more varied, and where relying on general assumptions can cause real problems:

Because this varies so much by country, check the specific rules of your other citizenship before you travel — don't assume Canada's approach is universal.

Practical Scenarios

ScenarioGenerally recommended approach
Flying into Canada from anywherePresent your Canadian passport
Flying into your other country of citizenshipPresent that country's passport, unless its rules say otherwise
Transiting through a third countryFollow that country's entry requirements for whichever passport you're travelling on
Renewing one passport while the other is validKeep both current where possible, so you're never caught without the right document

Documents to Carry Regardless of Which Passport You Use

Carrying both passports on every international trip, even the one you don't expect to use, avoids being caught without acceptable identification if plans change.

Frequently asked questions

Can I be denied entry to Canada if I show up with only my foreign passport?

As a Canadian citizen, you have a right to enter Canada regardless of which passport you present, but showing up without a Canadian passport can cause delays, since border officers will need to independently verify your citizenship through other means.

What happens if my other country doesn't allow dual citizenship?

Some countries treat holding another citizenship as void, restricted, or requiring disclosure, and their border rules may not recognize your Canadian passport at all while you're there. Research the specific country's position, since the consequences of getting this wrong can range from a minor inconvenience to a legal complication.

Do I need a visa to enter Canada if I'm travelling on my foreign passport?

If you're a Canadian citizen, you don't need a visa to enter Canada, but you should still travel on your Canadian passport where possible to avoid confusion at check-in or the border about your status.

Is it illegal to use the "wrong" passport at a border?

It depends entirely on the country. Some countries have no issue with it; others treat it as a serious problem, particularly where they don't recognize dual citizenship. When in doubt, use the passport of the country whose border you're crossing.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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