Volcanic ash is causing further disruption to air travel, closing airports in North Africa for the first time since the volcano in Iceland began erupting in March.
Eight airports on Morocco's north and west coasts, including Rabat and Casablanca, were shut down.
For a time, airports in southern Spain were closed, and authorities shut airports in the Canary Islands.
Turkey imposed a four-hour flight ban over parts of its north-west, and closed one of its smaller airports.
European air traffic officials say the ash-affected area is expected to move towards south-eastern France.