This is another cheap, sly move on the part of AC.

They do this to keep the price of Lowest Exec "low". Instead of stacking a Z on ZRHYYZ with a J on YYZMIA (and having a much higher price), they pull this and hope the PAX doesnt catch on till it's too late.

It's a joke. The warning that comes up is absurd.

Almost booked YOW-LHR-BKK in "Lowest Exec". Noticed a warning on the left of the screen "LHR-BKK" not available in Executive cabin. Umm, are you kidding!?!? A 12 hour flight with a warning like that?

When selecting "Lowest Executive class" guess it's too simple to actually assume you will be seated in Exec on every flihgt in which that cabin is offered.

Sad