Originally Posted by
apoivre
Besides, does booking a flight as a codeshare affect the YQ? Say, if I want to fly QR metal from DOH to LHR and onto LAX on AA, both flights under their BA codes, do I get to pay the BA YQ? Or does the answer depend solely on the plating carrier?
YQ depends also on marketing carrier. I tried to get same itionary priced with different marketing carriers with AA RTW desk previously, mostly the YQ differences were small, but when I selected BA code instead of operating carrier code (usually AA/AY) sometimes the YQ went up a lot. You can estimate the YQ with the Matrix, but it also slightly depends on ticketing carrier so the estimate is not always accurate.