All U.S. citizens, Canadians, Australians, New Zealanders, and South Africans must have a passport with at least 2 months' validity remaining. No visa is required. A passport will allow you to stay in the country for up to 6 months.

No, you cannot fly from Canada to the UK without a valid passport. As of February 25, 2026, the UK has implemented strict enforcement of the Electronic Travel Authorisation (ETA) for Canadian citizens. While Canadians do not need a visa for stays under six months, the ETA is a mandatory digital requirement that must be applied for online (costing £10/approx. $18 CAD) before boarding your flight. The ETA is digitally linked to your physical passport; therefore, even if you are a dual citizen, you must present the passport used for the ETA application. The only exception to the passport rule is for those who hold a valid UK or Irish passport, but even then, a travel document is required for international flight. There are no "alternative" IDs like a driver’s license or NEXUS card that will grant you entry to the United Kingdom from North America.