Originally Posted by
u2fan
If this is your return and it is a connection BCN-LHR-ORD and you miss BCN-LHR nothing should happen. This is because most computers cancel the itin after the following day. They give it an extra day to allow for irrops and various other reasons. So many passengers miss flights during irrops, agents would be doing nothing other than 'opening' tickets.
Having said this, it is still risky.
I can recall about three instances where this was not the case (ie flight two was cancelled resulting from a no-show to flight one) so I really wouldn't bet my return flight on this.