Question to the Department for Transport:

To ask the Secretary of State for Transport, how many air passengers have made claims against airline companies for flight delays in each of the last five years; and how many such claims have been successful.

The Government does not hold this data, it is owned by the individual airlines. The Civil Aviation Authority, as the National Enforcement Body under EU Regulation 261/2004 on Air Passenger Rights, does however collate and publish data on complaints that it receives from passengers. This information can be found on the CAA website:

http://www.caa.co.uk/default.aspx?catid=80&pagetype=88&pageid=27&sglid=27.