If you booked directly with the airline which has been banned from flying in and out of the EU/UK we suggest that you get in touch with the airline referring to your rights established in the Passenger Rights Regulation. Should the airline fail to provide you with a reply within 6 weeks or, if you are not satisfied with their reply, you can refer your complaint to the CAA or to the relevant Alternative Dispute Resolution (ADR) body if the airline is a member of this network. This process may take some time and so we would encourage you to be patient.
Alternatively, if you paid by credit card you may be protected under Section 75 of the Consumer Credit Act 1974 and should contact your card issuer for further information. Similarly, if you paid by debit or charge card you should contact your card issuer for advice as you may be able to make a claim under their charge back rules.
This process may prove to be a quicker and more effective option than pursuing the airline, especially if the airline is difficult to contact, which can be the case in situations where an airline is banned from flying in and out of the EU/UK.