The When We Were Young festival is set to return to the Las Vegas Festival Grounds for its fourth edition on October 18, 2025, with an all-star lineup headlined by pop-punk icons Panic! At The Disco and blink-182. Alongside them, a mix of legendary and nostalgic acts, including Weezer, Avril Lavigne, The Offspring, and The Used, will take the stage, providing fans with a dream lineup that spans multiple generations of alternative rock and punk. Additionally, fans can look forward to rare performances from bands like Never Shout Never, The Cab, The Rocket Summer, and Jack’s Mannequin, making this a must-see event for anyone who grew up on the emo and pop-punk scene.