Flatline Fest is a two-day extreme metal music festival held at the Oriental Theater in Denver, Colorado. What makes it unique is that it is curated by a local metal producer, Dave Otero, and showcases a blend of international and local bands he has collaborated with.
What Flatline Fest offers
The sound system will be unforgiving. Loop lets you hear every detail at a safe volume – no ringing on the train home. We love recommending a product we've been using ourselves for years.
Where you'll be
The Oriental Theater
4335 W 44th Ave., Denver, CO 80212Local Currency: USD
Consider paying in USD locally. Bring cash or use a payment card that supports this currency to avoid extra fees.
Past Editions
An independent music & festival researcher with 10+ years in the global dance scene.
28 August 2026
