The papers today report that any UK citizen going to Spain will be faced with two week's quarantine in a tit-for-tat response to the UK insisting that incomers have to quarantine for two weeks. Dialogue's supposed to be open between the countries for air-corridors, but put it this way -
If the UK had air corridors with Spain and the other EU countries, the couldn't have with the USA because the situation's so bad over there, which would be a huge embarrassment for Trump (It would be the UK's way of saying "you're doing shit, mate") so he would turn against the UK when we are trying to make trade deals outside the EU.
So thanks to Brexit we'll have to wait, and wait, and wait until we are released.