Click4Sky operated flights from the Czech Republic to various destinations mainly in Europe.
It was a a low-cost subsidiary of CSA Czech Airlines based at Prague airport. Click4Sky was founded in 2007. In December 2009 Czech Airlines decided to stop operating flights under the Click4Sky brand.
All air tickets were sold at a fixed price and it was not possible to buy one-way tickets with Click4Sky. Click4Sky offered full service on its flights such as free refreshment or newspapers onboard. This was due to the fact that Click4Sky did not own any aircraft, instead it used unsold seat capacity of Czech national airline CSA Czech Airlines.