Trying to check availability on this route on BA.com and it says I cannot use the Companion Pass because BA does not fly this route. Which is silly because I know I can get to LHR from ORD on BA and that BA also operates LHR-SIN. I am actually ultimately trying to get to Australia, and I know using Avios to get there is much more expensive, mileage-wise, than using AA miles, but I have tons of BA miles (over 700,000) and want to try to salvage as many AA miles as I can. So I was thinking of checking out Singapore for a few days as it is on my must-see list, and then continuing on to Sydney/Melbourne using Qantas. The companion pass is frustrating me this year. I was able to use last year's relatively easily and felt I got good value out of it (ORD to CDG with stop in London in J), but I can't figure out how to utilize the one I earned in 2011 by the expiry of Oct. 2013. I can't afford another trip to Europe this year in addition to an Australia trip next year (which is my dream 40th birthday trip). So I'm trying to figure out how to incorporate the companion pass in the best way possible, into my itinerary to Australia.