Flatline Fest

Denver two-day extreme metal festival curated by producer Dave Otero and centered on the Flatline Audio orbit.

Jun 13 - Jun 14, 2026 Denver, CO, USA Oriental Theater $50 - $250
Official festival site

Trip Starter

Pick the travel lane and we’ll route the trip the right way.

We will use the festival dates automatically, pad each side by a day, and add one extra outbound day when a U.S. departure is heading to an international festival.

Keep this simple: home city plus your 2-letter state code.

Festival window: Jun 13 - Jun 14, 2026

We’ll skip flights for now and keep this trip on the stay and ground-travel side instead.

Here's what we know.

This is the working festival file: dates, venue, price band, lineup coverage, and the notes that actually matter once you leave checkout mode.

Profile

metal

Denver two-day extreme metal festival curated by producer Dave Otero and centered on the Flatline Audio orbit.

Travel

  • Venue Oriental Theater
  • Location Denver, CO, USA
  • Accessibility Not rated yet
  • Closest airport BJC - Denver
  • Distance From Airport 9.9 miles

Price range

$50 - $250

Listed pricing reflects the current festival details. Book-it planning happens separately from the official ticket sale.

Lineup Desk

The lineup so far.

Official venue lineup listing

Day 1

Sat, Jun 13

6 acts

Headliners
Archspire
  • Archspire #1
  • Aborted #2
  • Nuclear Power Trio #3
  • Inferi #4
  • Of Feather and Bone #5
  • Clusterfux #6

Day 2

Sun, Jun 14

6 acts

Headliners
Cattle Decapitation
  • Cattle Decapitation #7
  • Allegaeon #8
  • Cephalic Carnage #9
  • The Zenith Passage #10
  • In the Company of Serpents #11
  • Necropanther #12

Ground Game

Pin the venue and sort the local side of the weekend.

Once flights are priced, this is the piece that keeps the whole run from getting sloppy.

Venue Oriental Theater
City Denver
Region CO
Postal code 80212
Closest airport BJC - Denver
Distance From Airport 9.9 miles
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