planning to book SFO-Toronto for my wife for Jul-24. I see air canada flights on UA.com, but don't see those flights on TK website., TK US helpline can't see those flights as well. This means TK don't have access to those flights, and I won't be able to book?

As 2nd option, i tried air canada. but they need approx 70k miles, which similar to the cash price of these flights. Any 2nd best options to use miles to book these Star Alliance flights?

note- i am trying to confirm availability and feasibility first, before transferring miles from Cap1 to TK.