Originally Posted by Mwenenzi

This thread is from 2018. A *lot* has changed.

In NZ the answer is simple: none. As no Oneworld airline operates in NZ. The Qantas owned low cost airline JQ Jetstar does operate some NZ domestic flights with a few A320's. Is a specific rule in OW RTW rules that allows QF codeshares on JQ to be part of a *ONE* & GLOB* tickets. But given the cheap fares and short routes in NZ would be a waste of a segment.

In NZ all domestic flights (JQ and Air NZ) are economy seating only. No NZ domestic business class seats.

In AU are some AU domestic flight BA codeshares on QF that are mainly sold as tag's on to BA15 (LHR-SIN-SYD). When BA restarts flying to MEL expect a few more.
Are also on the some AA codeshares on QF on the same basis. That is sold a tag on's to AA flights from USA.

Are BA & AA codeshare on QF trans Tasman (AU<--->NZ).

Have read that expert flyer can show the BA codeshares on QF. [I am not a user of expert flyer].
Airport website flight departures may show codeshare, but clumsy way to find out.
Years ago (~decade) OW used to publish a pdf timetable, While old tech they did list codeshares, so was easy to identify.