The Czech regional carrier Central Connect Airlines (CCA) has suspended operations, though the company says it is entering a restructuring phase.
The airline had operated scheduled flights to Prague from its Ostrava base - in the eastern part of the country near the border with Poland - on behalf of CSA Czech Airlines, in addition to running charter services.
Since March, it also operated routes to Berlin, Stuttgart, Hanover, Ljubljana, Zagreb and Krakow for the country's main carrier.
However, ticket sales did not develop as expected and "profitability was not achieved", CCA says in a statement. The management therefore decided on 19 June to suspend all flights temporarily "in order to optimise the operation and regulation of the restructuring plan".
Czech Airlines says the flights were called off "unexpectedly".
According to Flightglobal's Ascend online database, CCA operated six Saab 340 aircraft, including two freighters.
CCA was not available for immediate comment.