Secret Lagoon Discount Code: Stuck25 for 15% Off

Short answer: the discount code for the Secret Lagoon in Flúðir is Stuck25. It gives you 15% off admission when you book on secretlagoon.is. An adult ticket drops from 4,500 ISK to 3,825 ISK — you save 675 ISK per person. No signup, no catch. Just paste it in at checkout.

I have run this magazine since 2012, and I negotiate every code myself with the operator. The Secret Lagoon gave me permission to publish this one openly, so here it is.

How to use the Stuck25 code

1. Go to secretlagoon.is and click Book Tickets.
2. Pick your date, your arrival time, and how many people are coming.
3. Type Stuck25 into the promo code field at checkout.
4. The 15% comes off your total before you pay. If the price doesn’t drop, the code hasn’t been applied — check for a stray space before you pay.

What you actually pay

These are the current prices at the Secret Lagoon. The children’s ticket is not a typo — it really is that cheap, which makes this one of the best-value family stops on the whole Golden Circle.

An adult ticket is roughly $33 or €30 at the time of writing. Seniors need to show ID, and the children’s rate covers up to three children per adult. Always check secretlagoon.is for the current prices before you travel — Icelandic prices move.

Why I send my readers to the Secret Lagoon

Iceland has some famous lagoons, and they are good at what they do. But they are resorts, and they are priced like resorts. The Secret Lagoon is the other thing entirely: a genuine old Icelandic pool, in a field, with steam drifting over the grass and a small geyser going off beside you while you soak.

Two things keep me coming back. The first is how clean it is. All of the water comes straight out of the hot springs around it — Vaðmálahver, Básahver and Litli Geysir — and it flows through constantly. The entire pool replaces itself every 24 hours. You are sitting in fresh geothermal water, not treated water, and you can feel the difference.

The second is that it is cozy. It is small. It has never felt crowded to me. There is no swim-up bar and nobody is selling you a silica mask. You get warm water, cold air, a bistro that will hand you a beer, and the ruins of the old changing huts sitting right there to remind you that people have been bathing on this spot for a very long time. I have taken my wife there more than once, and I can tell you the place is quietly romantic. Half the couples on their Iceland getaway seem to have worked this out already.

What makes it authentically Icelandic

• It is the oldest pool in the country. Built in 1891 at Hverahólmi, the geothermal patch just outside Flúðir.
• Icelanders learned to swim here. The first swimming lessons ever held in Iceland took place at this pool in 1909, and they carried on every year until 1947.
• It was a meeting place before it was a pool. The site served as the seat of the local Flúðir assembly until 1894, and people had been washing their clothes in the hot springs long before that.
• It was almost lost. After 1947, the pool fell out of use and sat forgotten for decades. The work to bring it back began in 2005, and it reopened as the Secret Lagoon on 7 June 2014 — restored to be comfortable yet deliberately left rustic.
• The showers are the real thing. Traditional Icelandic changing rooms, separate for men and women. You shower properly without your swimsuit before you get in, the way we all do. That is why the water is as clean as it is.

Secret Lagoon quick facts

Where it fits on your Golden Circle day

Make it your last stop. Do Þingvellir in the morning, the geysers at Haukadalur around midday, Gullfoss after that, then drive on to Flúðir and get in the water. Coming out of a hot pool at the end of a long day of driving and walking is the correct way to finish, and the drive back to Reykjavík afterward is an easy one — as long as somebody else is driving if you had that beer.

If you want a full plan for the day, I have written one: my Golden Circle itinerary. Friðheimar, the tomato farm restaurant, is close by and worth a lunch stop.

What to bring

• Swimsuit and towel. Both can be rented on site for 1,200 ISK each if you forget, but bringing your own saves you 2,400 ISK per person.
• Flip-flops. Not essential, but nice on cold ground.
• Hair tie. Geothermal water in Iceland is sulphuric and not kind to long hair. Tie it up or expect a rough comb-out.
• Book ahead. The pool is small, and they cannot promise you a spot if you turn up cold in summer. Book online — which is also where the code works.

Secret Lagoon or the Blue Lagoon?

They are not competing for the same thing. The Blue Lagoon is a polished luxury spa near the airport with a price to match, and it is genuinely impressive at what it does. The Secret Lagoon is a small historic pool in a farming village that costs a fraction as much and feels like a piece of ordinary Icelandic life rather than an attraction built for visitors.

If you are driving the Golden Circle and you want to know what Icelanders actually mean when we talk about our pool culture, go to Flúðir. If you have one day in the country and you land at Keflavík with hours to kill, the Blue Lagoon is the practical choice. Plenty of people do both.

Want the codes I can’t publish?

The Secret Lagoon lets me put this one out in the open, and I appreciate it. Most of my partners do not — their codes are for my subscribers only.

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Secret Lagoon — frequently asked questions