Yes, citizens of the United Kingdom with a valid British passport do not need a traditional visa to visit Canada for stays of up to six months for tourism or business. However, you must obtain an Electronic Travel Authorization (eTA) before you fly to or transit through a Canadian airport. In 2026, the eTA application is a quick online process that costs $7 CAD and is usually approved within minutes, though you should apply at least 72 hours before your flight. The eTA is electronically linked to your passport and is valid for up to five years or until your passport expires. If you are arriving in Canada by land (from the U.S.) or by sea (on a cruise ship), you do not need an eTA; your valid British passport is sufficient. It is important to note that if you have a criminal record or have been previously deported, you may be denied an eTA and would then need to apply for a formal Temporary Resident Visa (TRV) through a Canadian consulate.