Using low cost carriers to go to Prague can indeed be cheaper but doesn’t systematically mean cheaper. Just recently, Czech Airlines and Air France terminated their codeshare agreement*. Together, they would operate 6 flights per day – now they have 8 all together… and that had an impact on prices.
These days, if you look for the cheapest flights, you might find a return ticket as low as 99€ on Air France or Czech Airlines ! At that kind of prices, 90% of the price of your ticket represent airport taxes and fuel charges… i.e., you cant get much lower.
Flying with low cost companies might only save a couple of euros, if not more expensive.
…The question is, with prices not being that much cheaper with low costs, what do you prefer : classic airlines (where you generally get good service, newspapers and a drink) or low cost ? 🙂
* Note: A few months after the article was written, Air France and Czech Airlines decided to resume their code share cooperation.