With a family of five and not a whole load of disposable income, I came to the conclusion long ago that lo-co airlines are too risky to plan a holiday around. First off, there are rarely discounts for children. Secondly all those extra hidden costs add up. Thirdly, what happens in the case of a cancellation (money back and find your own way home or god knows how long till they put you on the next flight)? Frankly, if you're travelling with kids, you can't afford to travel with an airline who won't help you when things go wrong. FYI: as a result, we usually go by car!