Regulation (EC) No 261/2004 provides air passengers with specific rights to compensation, care, and assistance in cases of denied boarding, flight cancellations, or long delays. It applies to flights departing from an EU Member State or arriving in the EU on an EU carrier, offering financial compensation of €250 to €600 based on flight distance. 261/2004 - EN - Flight Compensation Regulation - EUR-Lex

Regulation - 261/2004 - EN - Flight Compensation Regulation - EUR-Lex. What Is EU 261 And How Does It Work? - Forbes