The matches attracted an aggregate attendance of 211,858 – well above the previous record total of 197,550 that watched the play-offs at the end of the 2007-08 season.
Sunderland's 2-1 victory over Sheffield United in Saturday's Championship final, securing the Black Cats' return to top-flight football after eight years, was attended by a crowd of 82,718.
The League One showdown on Sunday, when Charlton overcame Leyton Orient 1-0, was watched by 76,193, while 50,947 saw AFC Wimbledon defeat Walsall by the same scoreline on Monday.
Issued on BBC Sport | https://www.bbc.com/sport/football/articles/cx2jy9j2jgko