Maybe a long shot but also a chance for Cardiff to replace Ryanair on Tenerife and gain a new carrier?
With many airlines downsizing because of the virus it's interesting to see Volotea expanding. If it works they could get themselves ahead of the game if the aviation market next year is not as bad as many believe it will be.
It's not an airline I know much about so I've done a bit of looking around on the Net. They are a Spanish airline with headquarters at Asturias and seem to be in the process of becoming an all-A319 fleet as they rid themselves of the B717s, with the current fleet size shown as 19 A319s and 14 B717s. All aircraft are apparently stored at present because of the virus.
They style themselves as the 'airline of the mid-size and small European cities' so that might be encouraging to smaller airports around the UK.
Against that they don't appear to operate to the UK at all at the moment. Their website says they have 16 bases in France, Italy, Spain, Greece and Germany: Venice, Nantes, Bordeaux, Palermo, Strasbourg, Asturias, Verona, Toulouse, Genoa, Bilbao, Marseille, Athens, Cagliari and Hamburg, with two more opening this year at Lyon and Naples. They seem to have counted Lyon and Naples in the 16.
I think they have operated from the UK in the past - Southampton for instance? - but that might have been under contract to a tour operator.
The UK though might constitute a double risk next year: the virus fallout and Brexit. If they could be persuaded to fly to CWL from the Canaries they might add routes from other bases in future that have a more business traveller flavour.