The Secret Lagoon in Flúðir: Adding a Hot Spring to Your Golden Circle

The Secret Lagoon in Iceland is a small, naturally heated pool in the village of Flúðir, in South Iceland. It is a simple, relaxed alternative to the large spas near Reykjavík, and it sits close to the classic Golden Circle route, which makes it easy to add as a final stop after a long day of sightseeing.

This guide explains where it is, how it fits into a Golden Circle itinerary and how to plan the day so that you have time to soak without watching the clock.

What the Secret Lagoon in Iceland is

Often called the Old Pool in Icelandic, the Secret Lagoon is widely described as one of the oldest swimming pools in the country. It is fed by a natural hot spring, and the area around it has steaming vents and a small geyser that erupts regularly. The atmosphere is rustic and low-key rather than polished, which is exactly what many visitors enjoy.

Because it is a much smaller place than the big lagoons, details such as opening hours, entry prices and booking rules can change with the season. Always check the lagoon's own website for current information before you plan your day.

Where Flúðir is and how long it takes

Flúðir is a small village in South Iceland, roughly an hour and a half by road from Reykjavík in normal conditions. It lies inland, a short drive from Gullfoss waterfall and not far from the other Golden Circle sights, so it works well as the last stop of the day before heading back to the city.

The standard Golden Circle takes in Þingvellir National Park, the Geysir geothermal area and Gullfoss. Our Golden Circle guide explains each stop and how long to allow. Adding Flúðir stretches the day, so plan the timing carefully.

The farmland around Flúðir is known for greenhouses and local produce, so a meal or a snack in the area can be a pleasant break. Kerið, a colourful volcanic crater lake, is another easy stop on the way back toward Reykjavík. Opening hours and booking rules for restaurants and attractions change, so check them before you build them into your day.

A relaxed way to structure the day

Here is a framework you can adapt. Treat the times as approximate and adjust for your season and pace.

1. Leave Reykjavík early to see Þingvellir while the paths are quiet.
2. Visit the Geysir area and then Gullfoss, taking time to walk and take photographs.
3. Have a late lunch near the route; some travellers choose a stop in the farming area around Flúðir.
4. Drive to the Secret Lagoon and soak for a while as the day winds down.
5. Return to Reykjavík in the evening, relaxed rather than rushed.

What to bring

• A swimsuit and a towel, plus a plastic bag for wet items.
• Warm layers, a hat and dry shoes for stepping out into the cold.
• A refillable bottle of water, because hot water dehydrates you.
• A small amount of cash or a card, depending on the lagoon's payment options at the time.
• Flip-flops or sandals for the changing area.

As in all Icelandic pools, you are expected to shower before entering. For a full overview of the etiquette and the other options around the country, see our guide to hot springs and geothermal pools in Iceland.

Visiting in different seasons

In summer the long daylight makes it easy to fit everything in and enjoy the surroundings. In winter the days are short, the air is cold and the steam is dramatic, but you need to plan around daylight and road conditions. Check the road and weather forecast before you set out, and be flexible if conditions change.

Whatever the season, give yourself a margin. Arrive with enough time to shower, change and enjoy the water before the lagoon closes, and keep in mind that the drive back to the city takes about as long as the drive out. A soak is more enjoyable when you are not watching the clock.

Northern lights are sometimes seen from places like this in the dark months, but they can never be guaranteed. Treat them as a bonus, not as a plan.

Getting there without driving yourself

Public transport to Flúðir is limited, and day-trip routes do not always include it. If you want to add the Secret Lagoon to your Golden Circle day, a private tour with your own driver can make this straightforward. The price is per car, not per person, and the timing is flexible, so you can stay in the water as long as you like. Message us on WhatsApp at +354 777 3949 and we will tell you what we can arrange for your date.

Landing soon and want to start the trip right away? A pre-booked airport transfer from Keflavík meets you in arrivals with a name sign, and your first Golden Circle day can follow after a good night's sleep.

FAQ

How far is the Secret Lagoon from Reykjavík?

Is it on the standard Golden Circle?

Do I need to book in advance?

Can I visit in winter?

Can you include it in a private tour?