The Foreign Office has warned travellers to be vigilant after police used teargas during a demonstration at Heraklion Airport in Crete today.
The incident occured during a demonstration by taxi drivers outside the airport.
The Foreign Office said: “Visitors are advised to exercise caution when using the airport and to follow advice given by their tour operators.”
The taxi drivers’ protest began last Monday in opposition to plans to liberalise their sector.
The Greek government is targeting 135 professions, including taxi services, for reform as it struggles to make the economy more competitive and reduce the country’s debt mountain.
Visitors are advised to expect regular strikes and demonstrations.