OpenAir St. Gallen returns to Switzerland from June 25-28, 2026, featuring an impressive lineup of 58 artists across pop, rock, alternative, indie, and electronic genres. The festival is headlined by major acts including Twenty One Pilots, Paul Kalkbrenner, Galantis, Nothing But Thieves, Of Monsters And Men, and Zara Larsson. The diverse international roster spans artists from Sweden, the United States, Switzerland, Germany, the United Kingdom, Australia, Ireland, and Iceland, offering attendees a comprehensive four-day music experience. Notable performances will also include Wet Leg, Jan Delay & Disko No. 1, Scooter, and Nina Chuba among the extensive artist lineup.