It’s frequent the situation that you have to suffer long waits due to flight delays, especially in holiday.
However, the great majority of passengers do not lodge any claim because they ignore the rights that they have.
For this reason, we stand out that the Court of Justice of the European Union has established the right to compensation, foreseen in the article 7 of the Regulation EU 261/2004 of 11/02/04, for the passengers who suffer a delay of three or more hours. There is not right to compensation if the delay is due to extraordinary circumstances.
Regulation EU 261/2004 of 11th February of 2004 http://www.boe.es/buscar/doc.php?id=DOUE-L-2004-80291
Sentence of Court of Justice of the European Union with date of 23th October of 2012: Nelson vs. Lufthansa http://curia.europa.eu/juris/document/document.jsf?text=&docid=128861&pageIndex=0&doclang=ES&mode=lst&dir=&occ=first&part=1&cid=445197