The whole experience as amateur, from the flight attendants to the flight itself. The worst landing I have ever experienced in good weather, making the majority of the cabin doubt whether we were going to make it. Filthy uniforms and dirty old planes. I will never fly again and I am a seasoned flyer, who doesn't scare easily.
Avoid school holidays: Many cheap airlines take advantage of school holidays to increase their prices, as they expect to have a larger number of passengers than usual. During these periods a late booking (1 week before departure) may result in your paying more than the price of a ticket with a regular airline. It is therefore advisable to avoid these periods, if possible.