I'm 6ft, 190lbs so not substantially overweight. Airlines like Air Canada Rouge have a 29" seat pitch in standard economy. I find that very uncomfortable. Even their upgraded seats are very tight for me with my knees pressed up against the seat infront of me unless I sit bolt upright.

On many leisure routes from Toronto there is very little choice in flights either, so pay more means pay their business class rate which is quite expensive, or well go some very complex non-direct routing.

All of these options are horrible.