Originally Posted by
ironmanjt
Because AA doesn't fit into our transatlantic or transpacific plans, and AA will only ticket with an AA operated (or sometimes AA coded) flight across the water.
AA marketed (coded) flights on other carriers do qualify.
There are also other options. Some travel agents are well versed in these tickets, IIRC there are two who are regulars in these threads. Also, doesn't BA do these tickets, too? They used to. Years ago I used Mindpearl in South Africa, but I don't know if they're still around. The Travel Centre in Australia also does these tickets (I've bought several from them).