Irregularities in air transport If a flight has been delayed, cancelled, or if the carrier is not able to provide previously confirmed space and the passenger cannot be carried to the destination point, or if the passenger misses a connecting flight with confirmed reservation, the carrier shall according to the regulation of the European Parliament No. 261/2004, either: 13 a) Refund the ticket price, if the travel cannot meet the original purpose any longer, or b) Transport of passenger to the destination indicated in the ticket on its own scheduled service, or, if it is technically possible, on a scheduled service of another carrier. A change of carrier upon agreement with passenger means the termination of the original contract of carriage and the conclusion of a new contract of carriage with the respective carrier. If the passenger accepts a change of carrier, he/she also accepts the conditions of carriage of the new carrier. c) The passenger is entitled to refreshments in a reasonable relation to the time of waiting or to hotel accommodation, if a stay for one or more nights becomes necessary. In case a booked passenger was not accepted for carriage due to a flight cancellation caused by the carrier or insufficient seat capacity, relevant compensation will be provided to him/her.
Source: csa.com / April 2016