The 25,000 tickets for the events between May 12-15 cost up to £165 (234 euros, $249), with the most expensive places situated next to the "Royal Enclosure" where royals might attend.
The queen herself will attend the finale on Sunday and proceeds from the sale will go to charity, Buckingham Palace said.
Those unable to buy tickets can still apply for one of 5,000 free slots, allowing them to watch the ceremony on a screen and watch celebrities arrive.
The ceremonies will involve 900 horses and 1,500 artists including dancers, musicians and actors from around the world, the palace said.
Around 100 bagpipe players will also take part.
The queen is expected to celebrate her actual birthday in private and then take part in an official yearly ceremony known as the Trooping the Colour in June.
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The queen herself will attend the finale on Sunday and proceeds from the sale will go to charity, Buckingham Palace said.
Those unable to buy tickets can still apply for one of 5,000 free slots, allowing them to watch the ceremony on a screen and watch celebrities arrive.
The ceremonies will involve 900 horses and 1,500 artists including dancers, musicians and actors from around the world, the palace said.
Around 100 bagpipe players will also take part.
The queen is expected to celebrate her actual birthday in private and then take part in an official yearly ceremony known as the Trooping the Colour in June.
----------------------------------------------------------------------------------------------------------------