You might try AA to FRA via DFW. There has been some very good fares. I think you will get more Q miles this way than ORD-LHR with a BA connection. From FRA you might check with a lower cost carrier or take the train. I think the air miles from FRA are around 250 so not a big loss of FF miles if you don't get them.
I priced BA out of LGW and LHR to PRG for Apr 3 & 8 and it looks like $228 (651 miles each way). LGW would be a better bet as you route ORD-DFW-LGW for 5566 miles rather than ORD-LHR for 3945 on AA.
I was getting on AA ORD-RDU-LGW (4530 miles) for $480rt and ORD-DFW-LGW (5566 miles) for $527.
[This message has been edited by drtravels (edited 01-24-2002).]
[This message has been edited by drtravels (edited 01-24-2002).]