Nice guide ens100

The only thing I would add is after you have created the dispute there is a facility to upload documents and I would recommend using it. On mine I have done a brief one page timeline summary (when the flight was cancelled, when I requested a refund etc) and copies of a few relevant emails, concluding with the fact they are well over the 7 day limit for refunds which they are obliged to do under Art 8 EC261. I think it is worth 5/10 mins to do this to show some evidence and just to help tip things in your favour.