Does this price out on airfrance.us? The Amex 20k promo is only for online/app booking and phone booking is excluded. The last time I tried, any non-US origin airport cannot be booked on airfrance.us
Most options price out fine at airfrance.us. The website will take YVR/YUL as departure cities and YVR/YUL/YYZ as arrival cities in a multi-destination search. Just departing from YYZ is disallowed for some reason.