British Airways has put aside £350m to cover possible fines and legal action after it broke competition law.
The decision relates to last year's finding that BA had discussed fuel surcharges with rivals. BA shares ended 2.9% lower on Friday after the news.
The announcement came as BA said annual operating profits had slumped 13% to £602m after a spate of negative events.
Thousands of flights were cancelled after a terror threat in August, with many more hit by fog at Christmas.
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