1 · The short answer

Open'er Festival 2027 runs from 30 June to 3 July at the Gdynia-Kosakowo Airfield, on the Baltic coast. Regular tickets were on sale when the organiser's site was read, and the early bird tickets had sold out.

The festival has its own app for payments, exchanging tickets for wristbands and directions. Ringo Light's Poland plan covers the whole country with unlimited data at full speed, so the app, trains and maps work from landing to the airfield.

Dates: 30 June to 3 July 2027, at Gdynia-Kosakowo Airfield. Organiser's page

Ringo Light's Poland plan covers the whole of Poland: unlimited data at full speed, 2 weeks for $16.99 or 30 days for $26.99, nothing renews. The plan is at ringoesim.com/poland, and every brand's price for Kraków is compared on one day in Best eSIM for Kraków.

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2 · What to expect

Open'er is one of the large festivals in Poland, with several stages on a flat airfield outside Gdynia. Crowds peak at the main stage in the evening. Check the organiser's site for the line up, the schedule and the rules on what you can bring in.

3 · Getting there

  • ✓By train. Trains run from Warsaw to Gdynia and from Gdańsk to Gdynia. The SKM commuter line links Gdańsk, Sopot and Gdynia. Check PKP Intercity and SKM timetables.
  • ✓Festival transport. The organiser publishes how to reach the airfield from Gdynia, including buses. Read the getting there page before you travel.
  • ✓Jakdojade. Jakdojade is the app Poles use for timetables and tickets across the Tricity. Set it up with a card before you arrive.
  • ✓Flights. Gdańsk Lech Wałęsa Airport is the nearest big airport, with trains and buses into Gdynia.

4 · The official app and paying

  • ✓The Open'er app. According to the organiser, the app covers payments, exchanging your ticket for a wristband and directions. Install it and sign in on Wi-Fi at home.
  • ✓Tickets. Keep your ticket email or QR code saved offline for the wristband exchange.
  • ✓Cashless. The site does not state a payment system in the pages read, so check the organiser's site for how payment works before you go.
  • ✓Maps and meeting. Save the site map, and pick a fixed meeting point away from the main stage.

5 · Signal on the airfield

Tens of thousands of phones on one airfield slow any network, most of all in front of the main stage at night. Upload photos in the morning, away from the crowd, and save your ticket, map and train times offline.

Bring a power bank, and keep your phone on low power mode through the day.

6 · Which plan covers Open'er

Ringo Light's Poland plan covers Gdynia, the Tricity, Warsaw and the rest of the country, with unlimited data at full speed. If you travel on to Germany or the Baltics afterwards, a Europe plan covers the borders.

7 · The Tricity around Open'er

Gdynia, Sopot and Gdańsk are a short train ride apart.

Gdańsk Old Town, Gdańsk
GdańskGdańsk Old TownA rebuilt Hanseatic port town along the Motława river.✓SKM trains from Gdynia take about half an hour; use Jakdojade for times.
Malbork Castle, South of Gdańsk
South of GdańskMalbork CastleA huge brick castle of the Teutonic Knights, reached by train.✓Book your ticket online and save it offline.
Warsaw, Capital
CapitalWarsawWarsaw is the other end of the train line to Gdynia.✓Download tickets before you board; stations are busy in summer.
Kraków, South Poland
South PolandKrakówA day on from the coast for the old town and Wawel hill.✓Check intercity trains in advance, as seats fill in July.

8 · Frequently asked questions

When is Open'er Festival 2027?+
The organiser lists 30 June to 3 July 2027 in Gdynia.
Where is Open'er held?+
At the Gdynia-Kosakowo Airfield, in Gdynia on the Baltic coast.
How do I get to Gdynia by train?+
Trains run from Warsaw and from Gdańsk. The SKM line connects Gdańsk, Sopot and Gdynia. Check the organiser's page for festival transport.
Does Open'er have an app?+
Yes. The organiser says it covers payments, wristband exchange and directions.
Which Ringo Light plan covers Open'er?+
Ringo Light's Poland plan, with unlimited data at full speed across the country.

9 · Sources

  • Open'er Festival, official site: opener.pl/en, dates 30 June to 3 July 2027, read 28 October 2026
  • Poland Travel, official tourism site: www.poland.travel/en
  • PKP Intercity: www.intercity.pl/en/
  • Ringo Light: prices from the catalogue our checkout charges, on the day you read this.

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