The brand was introduced in 2007 as a measure to compete with the growing competition from low-cost airlines.[1] Unlike other actual low-cost airlines, Click4Sky did not operate any flights itself - instead it was being used as a marketing brand in order to sell unsold seats on existing Czech Airlines flights. Therefore, Click4Sky offered full service - free refreshment etc. In addition, the brand used to sell all seats at a fixed price and it was not possible to buy one-way tickets.[1]
However, this service stopped in November 2009 after only two years. Instead, the Click4Sky brand was then used to promote a low-fare search engine for Czech Airlines flights instead of selling unsold seats at a fixed price.[1]