No thresholds are in place for the air transport services that are subject to the licence of the Civil Aviation Act and are excluded from the scope of the Act No. 345/2015 Coll. on Public Procurement. According to the Civil Aviation Act, regarding domestic flights, only domestic providers can apply for the licence unless a foreign provider receives an exception. The same answer and source applied in 2016 and 2017, too. The same answer applied in 2013 - 2015 but the source was the Act No. 25/2006 Coll., on Public Procurement.