Just trying to figure out how I can combine my AA miles and BA miles to book 4 award seat SFO-London as cheap as possible. What suggestions might you have for me to combine these miles and go as FREE as possible on these award tickets. I currently have 210,000 AA and 200,000 BA miles coming (thank you BA Visa offer). How can I make this work the cheapest. Is there cheaper European destinations then London? Any suggestions are greatly appreciated. Thank you!