Ryanair's routes to France e.g. Rodez, Angouoleme, Dinard etc.
are often there to serve British second home owners. With the pound collapsing against the Euro it'll be increasingly difficult to pay the euro mortgage on French homes and I would suggest that very few people will be buying property abroad with one only getting about E1.20 to the pound. A significant part of the Ryanair customers will not be flying as much.