TL;DR: After being disrespected multiple times as customer by  Smartwings airlines over the years, now I can finally have my little revenge by claiming 400 euros for a delayed flight. The airline sent me an insincere and pathetic apologetic email message. Apology not accepted. I have been a regular customer of Smartwings airlines for quite a long time already. It was not by choice. The reason I fly with them is because it is the only airline which flies directly from Prague (where I live) to Valencia (my hometown). Although I appreciate that they include 15 kg of check-in luggage at no extra charge, the ticket prices are quite high compared to other low-cost airlines (Wizzair and Ryanair, for example). Also, they do not seem to care much about their customers. Several times they cancelled a flight just few days before the departure date due to "operational reasons". It would seem to me that the real reason was that they did not sale as many tickets for that flight as th