Transit through YVR (Round trip US-India-US)

[im42]

I would like to fly round-trip from USA to India via YVR and back, on a flight operated by Air Canada (code sharing with United Airlines) in Oct-Nov 2019. I hold a passport from India and a valid multiple entry Canadian Visitor's visa.

1. Would I also need to apply for a Canadian Transit Visa in addition

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[Vidhu]

Hello , I am on H1B US visa which is valid for 2 more years and I am planning to visit my family in DELHI. Can someone let me know if I need to have transit visa of Canada if I opt to book Air Canada from Chicago to Delhi via Toronto Canada ? I am indian passport holder.