Oakland should just settle for a simple name... Oakland Airport. Forget about "international" or "San Francisco". Heathrow Airport is simply "Heathrow Airport". To be important, it doesn't have to be named "Charles the Third, by the Grace of God of the United Kingdom of Great Britain and Northern Ireland and of His other Realms and Territories, King, Head of the Commonwealth, Defender of the Faith Greater London International Super Duper Airport"
Melbourne Airport in Australia is also plain and simple, "Melbourne Airport". It is not "Sydney Greater Melbourne Victoria close to New South Wales International Airport".