Originally Posted by binman

i found that using the codeshare increased the fare slightly. In my case LAX JFK went up £25 which for 4 was enough for me to stick with AA.

I also found that limiting US domestic services also resulted in odd timings and night stops. For example I could only get the 9pm service from JFK to LAX forcing another night in a hotel. Leaving as AA allowed most services to be used. Similarly I could only find late evening departures from PHL to DFW.

i would advise not limiting flights to BA unless you need 4 BA sectors. Good luck