Originally Posted by
AdamUK
Perhaps i'm a bit simple, but is there an additional saving returning to the original point of departure, because i've saved significantly by buying DUB-LHR-xxx-LHR and not even buy the DUB return leg, compared to buying ex-LHR. Maybe i've just been lucky?
It depends. I have had occasions where what you describe works, and occasions when it doesn't. It depends on what the fare is between DUB and xxx in comparison to the fare between LHR and xxx. Sometimes it's negligible, and sometimes it's huge (if there's a sale from DUB but not from LHR, for example).