Hoping 2021 will see a return to normal
For me
MAY
Duxford Air Festival
JUNE
Newcastle FoF (Assuming it is to go ahead, I could see it being moved back to August for 2021 if it is to go ahead)
Queen's Birthday Flypast
Cosford
JULY
RIAT (Friday, Saturday & Sunday)
SEPTEMBER
Duxford Battle of Britain
POSSIBLE
Bray (depending on date)
Cobh - Seems to be middle of August which is a clear month for me, but being down in Cork it might be tricky.