What is your opinion about these airlines?
Vueling is the low cost offshoot of Iberia, and both are part of the IAG (along with British Airways).
Iberia
http://www.airlinequality.com/airline-reviews/iberia/
Vueling
http://www.airlinequality.com/airline-reviews/vueling-airlines/
Note that it may be possible that you book an Iberia seat, but you will be flying on a Vueling plane.
Man, these days they prefer to be called "budget airlines", LOL!
Iberia has been fine every time I've flown it, but don't expect a free soda or snack. It's owned by British Airways.
Thanks all. I only have 2 choices Iberia and Vueling. So I guess it will be Iberia.