And the majority of those inside MK1 were there to celebrate as goals from Nathaniel Mendez-Laing, captain Alex Gilbey and top-scorer Callum Paterson ensured a 3-0 victory, sending Paul Warne’s side to the top of the table, securing themselves a top-three spot and automatic promotion with a game still to go.
What followed was a pitch invasion and a celebration with the players.
Can you spot yourself in the crowd from the pictures caught by our snapper Jane?
1. MK Dons fans celebrating automatic promotion in the win over Tranmere Rovers
There were more than 13,000 fans at Stadium MK on Saturday to see Dons return to League One after three years | Jane Russell
2. MK Dons fans celebrating automatic promotion in the win over Tranmere Rovers
Supporters watching the action from the Cowshed | Jane Russell
3. MK Dons fans celebrating automatic promotion in the win over Tranmere Rovers
DonsAction encourages fans to wear white on the final day | Jane Russell
4. MK Dons fans celebrating automatic promotion in the win over Tranmere Rovers
Nathaniel Mendez-Laing's opener got the fans out of their seats | Jane Russell