Pilots at the French national airline have started a four-day strike that could disrupt plans for thousands of football fans on the second day of the Euro 2016 competition.
Air France has cancelled up to 30% of its flights today. But it said it would prioritise journeys to cities that were hosting tournament matches. The pilots' union is taking action because of planned pay cuts and changes to working conditions.
It is one of many unions taking action; others are striking because they want the government to scrap new labour laws that will make it easier to hire and fire people.