Blue Lagoon

Introduction

The Blue Lagoon (Bláa lónið) is Iceland's most iconic geothermal spa, set in a black lava field on the Reykjanes Peninsula about 5 km north of the fishing town of Grindavík - not in Reykjavík itself - roughly 20 minutes from Keflavík International Airport and 45-50 minutes from the capital. The roughly 10,000-square-metre artificial lagoon is fed by runoff from the neighbouring Svartsengi geothermal power plant: the silica-rich water was meant to drain back into the ground, but silica sealed the lava so it pooled instead, and that same silica gives the water its milky-blue colour. The temperature holds at 37-40°C year-round and some 1.3 million people visit annually. Guests can take the white silica mud from the lagoon floor as a free facial mask, included in every package, and the complex offers a swim-up bar charged to an electronic wristband, steam caves, a sauna and a massage waterfall. Entry is by timed slot: 2026 prices start at 11,990 ISK for Comfort, 14,990 ISK for Premium and 18,490 ISK for Signature; the luxury Retreat Spa sits in a private lagoon carved into 800-year-old lava, limited to 20 guests every two hours, from 89,000 ISK. Of the two hotels, the Retreat Hotel holds a Michelin-starred restaurant. High-urgency note: the lagoon sits beside the Sundhnúkur crater row, where roughly 9-12 fissure eruptions occurred between December 2023 and August 2025, prompting several precautionary closures and evacuations (lava covered the then car park in November 2024) before defence barriers kept operations running. As of October 2026 nothing is erupting, but the Icelandic Met Office reports magma still accumulating beneath Svartsengi and considers further eruptions likely. Check the official status page and safetravel.is within 24 hours of your visit, and book refundable tickets directly.

✨ Highlights

🛈 Practical Info