Ipswich defeated Huddersfield 2-0 on Saturday to reclaim their place in the Premier League.
The hosts sealed the crucial victory with goals from Wes Burns and Omari Hutchinson.
Leeds, in third position, was three points behind Kieran McKenna’s team heading into the match.
All they needed was a draw to get promoted.
Now that the historic back-to-back promotions have been completed, the Tractor Boys.
They were promoted automatically from Sky Bet League One after finishing second behind Plymouth in the previous year.
For the first time since the 2001–02 season, Ipswich will compete in the English premier league.