You can claim if you have had one of the following problems: cancelled flight, flight delayed more than three hours, denied boarding due to for example overbooking, or a change in class and the air carrier has not addressed your rights as a passenger, you can check here:
If you believe your rights have not been respected, you can claim following the next steps:
AESA will examine your
complaint to check if there is evidence of breach of Passenger
Rights Regulation (Regulation (EC) 261/2004) and will request the
airline factual information, seek additional information and
examine whether it has complied with the provisions of the
Once analysed, AESA shall inform the applicant and the airline/s about the actions carried out in connection with the claim and will issue a report with the result of their actions.
In case the AESA report is positive for the passenger but the airline do not comply with its content, you can go to the courts, for which the positive AESA report would be very useful. You should also know that you can go to courts to seek compensation for damages at any stage of the process.
If the problem occurred at an airport in another country of the European Union, you should complain to the competent authority of that Member State, whose data are in this list: Bodies for European Regulation (EC) 261/2004 of the European Parliament and the Council and in this case we recommend using the standard complaint form we herein provide.
For more information you can call in the morning from 8:30 to 14:30 from Monday to Friday at telephone: +34 91 396 82 10, or send an e-mail request to: firstname.lastname@example.org