Around 100 Iberia express flights will be affected by the cabin crew strike, between 28 August and 6 September, which is expected to take place on days of high demand.
All flights between these dates will be open to rebooking or cancellation on receipt of a voucher. As for the operations that have not been guaranteed by the minimum services and that finally cannot be carried out, travellers will be informed directly by the company and in addition to vouchers and new dates to fly, they will have access to reimbursement of the amount paid to the airline.
You can consult all the details on their website.