The full lineup for the When We Were Young 2025 festival, happening on October 18, 2025, at the Las Vegas Festival Grounds, includes these main headlining acts:
- Panic! At the Disco (performing their album A Fever You Can't Sweat Out in its entirety for its 20th anniversary)
- Blink-182
- Weezer
- Avril Lavigne
- The Offspring
- All Time Low
- The Used
- Knocked Loose
- The Gaslight Anthem
- Bad Religion
- Yellowcard
- Ice Nine Kills
- Motionless in White
- I Prevail
- Beartooth
- Simple Plan
- Kublai Khan TX
- The Plot in You
- Mayday Parade
- Loathe
- Taking Back Sunday
- Asking Alexandria
- Pvris
- We Came as Romans
- Boys Like Girls
- The Cab
- Jack's Mannequin
- Set Your Goals
- letlive.
- Story of the Year
- Sleeping With Sirens
- Breathe Carolina
- The Starting Line
- Plain White T's
- Destroy Boys
- The Story So Far
- Sunami
- We the Kings
- Crown the Empire
- Straylight Run
- The Amity Affliction
- The Rocket Summer
- Never Shout Never
- Don Broco
This extensive lineup honors various iconic and current artists in the alternative, punk, and rock scenes, commemorating the festival's spirit and anniversary celebrations.
