Flight disruption across Europe is set to continue, with Brussels airport in Belgium asking airlines to cancel nearly half of their flights on Monday.

Several of Europe's busiest airports have spent the past few days trying to restore normal operations, after a cyber-attack on Friday disrupted their automatic check-in and boarding software.

Disruption had eased significantly in Berlin and London Heathrow by Sunday, but delays and flight cancellations remained.

In a statement on Monday morning, software provider Collins Aerospace said it was in the final stages of completing necessary software updates.

Brussels Airport said the service provider is actively working on the issue but it was still unclear when it would be resolved.

They have asked airlines to cancel nearly 140 of their 276 scheduled outbound flights for Monday.

Heathrow said on Sunday that efforts to resolve the issue were ongoing, and apologised to customers who had faced delayed travel, stressing that the vast majority of flights have continued to operate.

A Berlin Airport spokesperson noted that manual boarding was still being used by some airlines and did not provide an indication of when the electronic systems would be fully operational again.

The UK’s National Cyber Security Centre is collaborating with Collins Aerospace and affected airports to assess the impact. Cyberattacks in the aviation sector have increased by 600% over the past year, underscoring the growing threat to air travel.