Iceland has 6+ significant geothermal lagoons, but the main two are Blue Lagoon and Sky Lagoon. They compete for tourists with different approaches. Quick comparison, then details.
Quick summary
| Parameter | Blue Lagoon | Sky Lagoon |
|---|---|---|
| Price (base package) | €75-95 | €60-80 |
| Distance from Reykjavik | 50 km, 45 min | 10 km, 15 min |
| Size | Huge, ~8,000 m² | Medium, ~75 m infinity edge |
| Atmosphere | Tourist complex | Ocean-side spa |
| Ocean nearby? | No, lava all around | Yes, infinity edge into ocean |
| Spa ritual | A few procedures (Premium upsell) | 7-step ritual in Sér package |
| For couples | Classic, iconic | More romantic, especially at sunset |
| For families with kids | Better — more space | Worse — compact, pricier |
| For photos | Milky blue water is legendary | Ocean + sunset — more dramatic |
Blue Lagoon — details
Icelandic icon since 1976. Milky blue water — result of geothermal water with silica and algae. Temperature 37-39°C. Located in Grindavík lava field, 50 km from Reykjavik, on the route from/to the airport.
Packages
- Comfort (€75-95): entry + towel + silica mask + 1 drink
- Premium (€115-180): + 2 more masks + bathrobe + table at Lava Restaurant
- Retreat Spa (€350+): private lagoon, whole day
Pros
- Size — you can actually wander the lagoon
- Bar in the water — drink beer/smoothies on the spot
- Silica masks included in base — visibly improves skin
- Good stop between airport and city (luggage storage €5)
- Many photo angles
Cons
- Price. Most expensive lagoon in Iceland
- Tourist crowd — queues for masks, for the bar
- Chlorinated water — not as «natural» as it seems (but not unpleasant)
- Book 2-4 weeks ahead, otherwise no slots
Sky Lagoon — details
Opened in 2021, on the Kársnes peninsula 10 minutes from central Reykjavik. Main feature — infinity edge into the ocean: lagoon ends in a stone wall beyond which is the North Atlantic. Often the Snæfellsnes mountains on the horizon.
Packages
- Saman (€60-80): entry + shared changing room + towel
- Sér (€100-140): + private changing + 7-step ritual
7-step ritual (main feature)
- Lagoon (38°C)
- Cold plunge (8°C, wakes you up like nothing else)
- Sauna with ocean view
- Cold mist
- Body scrub (sea salt + minerals)
- Steam room
- Back to lagoon
Pros
- Close to city — 15 min by car, 30 min by bus
- Spa atmosphere, not tourist complex
- Ocean nearby — dramatic at sunset
- Fewer tourists than Blue Lagoon
Cons
- Size — smaller, feels like a «pool» more than a lagoon
- No legendary blue water (normal geothermal, not milky)
- No silica masks
- On a cloudy day the view isn't what photos promise
Which to choose when
Pick Blue Lagoon if:
- First visit to Iceland — it's iconic
- Want silica masks and the legendary water
- Going with a group/kids — more space
- Combining with airport (on way to/from Keflavik)
- Like big complexes with many activities
Pick Sky Lagoon if:
- Want a spa experience with ritual
- Staying one night in Reykjavik — it's close
- Want ocean sunset
- Want a less touristy place
- Budget — Saman package is cheaper than basic Blue Lagoon
Cheaper alternatives
- Local pool (Laugardalslaug, Sundhöllin) — €10, locals come here, not tourists. Hot tubs at different temperatures, sauna.
- Mývatn Nature Baths — north at Mývatn, €40, fewer people
- GeoSea Húsavík — north, seawater geothermal, €38
- Hot pots free/donation: Reykjadalur (hour hike), Hrunalaug (€5), Seljavallalaug (free)
Our recommendation
Over 8 years of tours: Blue Lagoon — yes at least once in life, for the experience and photos. Sky Lagoon — for a second visit or if spa experience is priority. Bonus combo: Sky Lagoon on first evening in Reykjavik (post-flight relaxation) + local pool with kids any day + Blue Lagoon before flight (on way to Keflavik).
Related guides: Iceland budget, Reykjavik in 1 day.