Sadly not until July 6th when unlimited travel for all purposes is expected to be allowed. At the moment whilst over flight in regional airspace is governed by the CAA/DofT/ Westminster Parliament, ground travel is governed by the devolved administrations so the five mile rule and the fact that most airfields bar Chester are only allowing engine health flights mean that 'recreational' flying is not easily achieved. There is nothing to stop you over flying Wales but you won't win any friends if you wind up on the ground trying to explain how you got to be half way up Snowdon in an aeroplane whilst the Police are fining people at the bottom for arriving there by car.
Hawarden has remained open throughout but most airfields are still shut.