Battle of the low-cost airlines: is Ryanair knocked off the perch?

We all know that Ryanair is the cheapest, right? Well, not quite. Ryanair is famous for their hidden fees, and our recent research shows that they make a big impact on the final cost. In fact, when all costs are counted, there are three other airlines that come out cheaper: Pegasus Airlines, Wizz Air and Blue Air.