A lot of airlines have an online application that basicly writes your CV in there desired format so having one made for you could not be a big advantage, yes you may need to take one to an interview should you get one, maybe get it done right for then.
on the other hand yea get a good one and mail it too the world, you never know, what I did was take a load of people I know CV's and take all the bits I liked to make mine,, and I am very happy with it.