About a quarter of Air France pilots are striking to demand better working conditions — the latest challenge to travelers and France's image as it hosts Europe's biggest sporting event.

Up to a fifth of flights are canceled Saturday, Air France said, both domestic and international. Among those affected were flights carrying spectators to cities holding European Championship soccer tournament matches.

Unions plan to keep up the strike through Tuesday, demanding better pay and more flight hours.

French train drivers have also been on strike for days, and garbage collectors, too.

They're striking for different reasons, but it's all part of a nationwide discontent as the government tries to change laws regulating working hours and layoffs.