In reply to Reach>Talent:
In the past, going there as a pair, I've always managed to get two half ropes and a sport rope and a full rack between us without exceeding the Easyjet baggage allowance (Ryanair would be a different matter) - simply because, as you're not camping, there is only your climbing gear and clothes to take (and you won't need warm clothes at the end of April!). It would be different if you're going out on your own and meeting people out there of course.
It simply depends what you want to do - I've always wanted to do multi-pitch trad as well as sport, so I've always taken the gear, and I don't think I'd want to do something on the Puig Campana or the Penon with only a single rope, if for no other reason than ease of getting off if it goes pear-shaped.
Rick