A fly-past will include Spitfires, the iconic fighter plane that helped win the Battle of Britain and fend off Nazi Germany in 1940.
The aerial display is expected to be watched by the queen and senior royals from the balcony of Buckingham Palace.
Balcony numbers have been limited to "working royals" only, leaving no place for self-exiled grandson Prince Harry and his American wife Meghan, nor Elizabeth's disgraced second son Prince Andrew.
Patriotic nostalgia runs red, white and blue throughout the festivities, culminating in Ed Sheeran singing "God Save the Queen" in front of Buckingham Palace on Sunday.
Participants in a giant public parade through central London earlier Sunday will be familiar to anyone acquainted with British popular culture since 1952.