Yes, you can claim and receive compensation for the cancelled flight if your arrival was more than 3 hours later and cancellation was by the airlines fault. Certain information, such as a the date of the flight, flight number, departure and arrival airports, the flight reservation number, are important, but there is no special need to have the flight ticket. However, there are some cases in practice when airlines require the ticket, boarding card, or a copy of an e-ticket. The best way to claim is to choose the airline claim company from our Best Companies list.