If you can depart CDG on the 30th, there is an interesting AC option via LHR: dep LHR at 19h05 on 30-10 arriving YYZ at 23h25, overnight in YYZ and choose from almost hourly dep to YVR on the 31st. RT LHR-YVR-LHR is currently just under CAD1500/USD1300 on AC.
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13F