We have found the same, whenever we flew from Glasgow on a package holiday flight a lot of the passengers, who probably fly maybe, once a year are nervous and when we land they clap and cheer. It's nothing to do with the plane it's the location you fly from.
I also think that Onur Air is a cheap option but everyone knows it's not a reliable one and flights are changed and cancelled all the time, it's like Russian Roulette you take a chance, keep your fingers crossed and hope it will be O.K. We only had one bad experience with Onur Air, but we made sure it was our first and last.