Not on qantas.com; ba.com will let you do this (but may not list QF MEL-LAX-MEL flights ). aa.com also lets it, but I've only noticed it for AA codeshare on QF and maybe only for US-origin. It is a GUI defect, not a core technology problem (i.e. the reservation system can handle it, but the crack web-site programmers that QF uses in India haven't implemented it).