Summerfest 2025 Schedule 1. Milwaukee — summerfest on wednesday announced its 2025 lineup featuring over 160 headliners who will take the stage over the span of three weekends. For the full summerfest 2025 lineup, see below:

Summerfest returns june 19 to 21, june 26 to 28 and july 3 to 5. Flex lawn passes return by.