Originally Posted by
Rykoshet
Thanks. That's what didn't make sense to me. The YYZ-ZRH routing that goes through YUL and makes the transatlantic portion on Swiss metal charges less than the YYZ-ZRH Air Canada route. So I guess it's just random whether or not it applies and I shouldn't waste too much time trying to game it?
If there are no scamchargeable airlines involved, you can subtract all YQ from the ITA breakdown
If AC is only involved for a short domestic, or transborder segment, you can add $50 (approx), or maybe none if lucky
If AC is the longhaul carrier, you can assume origin-destination YQ no matter what the other segments are
if there are other YQ airlines involved, AC can charge you just based on that segment, or they can charge you origin-destination based on what AC YQ would be, or they can just make sh!t up since they keep all the money anyway.