We need a transit visa if we are from a visa-required country and: your international flight stops at a Canadian airport on its way to another country. you’ll be connecting between 2 international flights at a Canadian airport.
There are 2 ways to apply: online or on paper. You’ll need to fill out the application form for a visitor visa and select “Transit” as the “Visa requested.” If you need help with your application, you can contact Canada Visa Point.
Most transit visa applications in a few weeks or less for process. Processing times depend on the visa office and if you need to complete any additional steps.They return your passport and other original documents to you after they process your application.
A transit visa is an official document that they put in your passport. It shows that you meet the requirements to transit for up to 48 hours through a Canadian airport. It can be valid maximum for 1 or 2 entries, depending on your travel plans. You should use your transit visa before it expires.
Its depends on your airline, If your airline offers the option of automatically transferring your luggage and you have a boarding pass for your connecting flight, you will be asked to proceed via a connecting flights corridor, avoiding Canadian customs.
Normally the airline won’t let you get on the plane. If you are refused entry to a country upon arrival, it is the airline’s responsibility to return you to your place of origin, so they will make sure that you hold the correct visa for your destination (if required)