The Portuguese National Cybersecurity Centre issued a statement saying there was no sign the outage was due to a cyberattack.

Power has now been fully restored in Spain and Portugal, as officials continue to investigate what caused the outage.

There has been a huge impact. The aviation analytics firm Cirium says over 500 flights were due to operate from UK airports ...

Investigations were ongoing on Monday to determine the exact cause of a widespread electricity blackout that cut off power to ...

Operations continued at both Porto and Faro airports, ANA said, but with limitations. Spain's Interior Ministry has declared a state of emergency after a nationwide power blackout hit the country ...

Portuguese power grid supplier Redes Energéticas Nacionais (REN) has claimed faults on the Spanish side of the power grid ...

IRISH travellers were caught up in the chaos after Spain and Portugal were hit by a massive power outage. A number of flights ...

Spain's Interior Ministry declared a national emergency and ... with limited operations at Porto and Faro airports. Such ...

Thousands of UK travellers are trying to return home on Tuesday after being stranded overnight because of widespread power ...

Nearly 100 flights due to depart Portugal on Monday (28 April) were cancelled, and 45 from Spain, amid the blackout ...

Enaire, Spain's air navigation manager ... "Our flying programme at Porto and Faro airports is operating as planned." The airline urged passengers to monitor local travel advice and flight ...

Spain and Portugal have been hit by widespread ... Airports were also affected, with emergency generators turned on at Porto and Faro airport, but Lisbon Airport is closed to inbound flights ...