So Qantas are starting a non-stop PER-LHR within the next few months, using B787-9's.
I guess this will finally settle the Emirates/Qatar squabble over who has the longest commercial route :-)
But how far is far enough? For me, LHR-LAX is as long as I ever want to fly again! I'd actually rather pay a bit extra and stop for a while at ORD/ATL etc...
Each to his own I guess, how far is too much for you?