BA recently announced an Autumn sale starting at $198 return (+ taxes, of course) to LHR
, which might not be such a bad deal. Or you could try Air India from ORD
- don't know the fares, but they're rock bottom, for sure.
That said, it just might work out cheaper for you to see if you can get on one of UA
's domestic add-ons out of O'Hare.