Thanks for the info.
I'll be flying from LAX to LHR, and possibly on to IST. And as I am paying, it'll be coach.
I have already taken advantage of the free BA ticket. I have another trip in September (which I can't use my free ticket for) when my fiancee is flying as well - hence the companion deal sounds like a (potentially) good deal.
Are AA running the same promo as BA, or is it just that you could use the free ticket on AA once you have flown BA?
I checked the prices in Sept and $900+ seemed a bit high. I'll check TW.