Qatar has lodged a protest with the International Civil Aviation Organisation (ICAO) against the siege countries using their satellite TV channels to intimidate passengers flying Qatar Airways.
Barcelona fans in Saudi Arabia could be punished with up to 15 years in prison for wearing their team's colours.
Saudi Arabian Airlines (Saudia) has suspended all flights to Qatar, it said on its official Twitter account on Monday, without providing further details.
A Qatar Airways passenger jet made an emergency landing at Istanbul’s main airport shortly after takeoff Thursday following a fire in one of its engines, Turkey’s state-run Anadolu Agency reported.