Belgium's airports are preparing for significant disruptions on April 29 due to a nationwide strike by public and private sector workers, affecting Brussels and Charleroi Airports. Travelers should expect cancellations, particularly at Brussels Airport where 30% of departing flights are already canceled. Brussels Airlines has canceled 70 flights, and Charleroi Airport has scrapped all departing flights. Public transport will also be disrupted, and passengers are advised to arrive early and monitor updates.