Open'er Festival
One of the largest music festivals in Poland, held on a working military airfield outside Gdynia each summer.
Updated 22 October 2026
Open'er has run since 2002, moving to Gdynia in 2003 and to the Kosakowo airfield outside it in 2006, and it is one of the biggest music festivals in Poland, running over four days in late June or early July. The airfield is a working military site the rest of the year, which is why the festival has flat open ground and hangars to work with. The programming is broad - headline international rock, pop, hip hop and electronic acts alongside Polish artists across several stages - and it has won European festival awards more than once. There is a campsite on the site, which is how most younger attendees stay, and shuttle buses run to the Tricity. Being on the coast, it can be hot and dusty or wet and cold within the same weekend, and the field turns to mud quickly. Tickets go on sale months ahead and the earliest tiers sell out.
History
The first edition was held as the Open Air Festival at Tor Stegny in Warsaw in 2002, with the Chemical Brothers on the main stage. It moved to Kościuszki Square in Gdynia for 2003-2005, where the last edition drew over 50,000 people, and since 2006 it has been held at Kosakowo airport; it won Best Major Festival at the European Festivals Awards in 2009, 2010, 2019 and 2024 (Wikipedia, Open'er Festival).
What's there
- A military airfield as a venue - flat ground and hangars, used for four days a year.
- Several stages - international headliners alongside Polish acts.
- An on-site campsite - where most of the crowd stays.
- A huge crowd - one of the biggest festival audiences in Poland.
When to go
Late June or early July. Several days.
Before you go
Tickets sell out months ahead. The site floods and turns to mud in rain. Camping facilities are basic for the numbers. Getting in and out at peak times takes hours. Line-ups are announced late.
Nearby
Gdynia and its modernist centre are a short ride south.
Key facts
Source: Wikidata, item Q3502395, read on 18 October 2026.
What to pack for Open'er Festival
Chosen from what this place is for. Tap a kit for the full checklist.
- Comfortable walking shoes - Sightseeing means kilometres of pavement and cobbles daily. Find on Amazon
- Shelter suited to the place - Tent, tarp or hut booking - match it to the terrain and rules. Find on Amazon
- A slim anti-theft daypack - Zips that close properly; keep it in front in crowds and on transit. Find on Amazon
- A warm sleeping bag + mat - Rated a little colder than you expect the nights to be. Find on Amazon
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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.


