Blue Crystal Ice Cave in Iceland: Everything You Need to Know

Standing inside a glacier and looking up at walls glowing electric blue is unlike anything else in Iceland. Ice caves only form — and open safely to visitors — for a few months each winter, which makes them one of the most fleeting, bucket-list experiences on the island.

This guide covers everything you need to know about visiting the Blue Crystal Ice Cave: when it's open, how to book, and what the tour actually involves.

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Practical Information

Getting There

✈️ By Plane: Fly into Keflavík International Airport (KEF), about 50 km (31 miles) from Reykjavík.

👉 You can book your flight here🔗

🚗 By Car: The ice cave is only reachable through a guided tour, but you'll still need to get yourself to the meeting point near Jökulsárlón, about a 4–5 hour drive from Reykjavík. In winter, make sure to rent a vehicle suited for icy roads.

👉 I usually book my car rental through Rentalcars🔗 or Booking.com🔗 — lately, Booking has been coming out cheaper.

⚠️ Weather changes fast in winter — roads can turn icy and storms can cause closures. Always check vedur.is🔗 for forecasts and road.is🔗 before driving.

Weather

• ❄️ Temperatures: -1°C to 4°C (30°F to 39°F) along the coast, colder inland.
•  Daylight: Only 4–6 hours per day at the peak of winter — most cave tours are scheduled around this.
• 🌨️ Cave access depends on conditions, so tours can occasionally be rescheduled at short notice for safety.

Accommodation

I based myself outside the city center as much as possible, to maximize my chances of catching the Northern Lights while heading out toward Jökulsárlón for the cave tour.

• Luxury: Umi Hotel 🅱️Booking🔗 🆃Trip🔗 🅴Expedia🔗
• Mid-range: Drangshlid Hotel by Tröll 🅱️Booking🔗
• Budget/My pick: Stóra-Mörk III Guesthouse 🅱️Booking🔗 🆃Trip🔗 🅴Expedia🔗 & Old Cottage - Reynivellir II 🅱️Booking🔗 🆃Trip🔗 🅴Expedia🔗
  

👉 I highly recommend Stóra-Mörk III Guesthouse — incredibly cozy, and where I was staying when the aurora finally showed up. Can't recommend it enough.

What Is the Blue Crystal Ice Cave

Situated beneath the Vatnajökull Glacier, the Blue Crystal Ice Cave is illuminated by vivid blue hues created by years of compressed, air-free ice — one of the most surreal things you'll see in Iceland. Access is only possible through a guided tour, and only from November to March, when conditions make the cave safe to enter.

How to Book a Tour

Tours typically depart in the morning around 9 AM from the Jökulsárlón area, followed by roughly a 30-minute drive to reach the entrance of the cave.

👉 Below are a couple of tours you can book to visit this cave:

• Jökulsárlón: Remote Glacier Hike and a Natural Ice Cave🔗
• Ice Cave and Glacier walk into blue glacier canyon🔗

⚠️ Availability changes year to year depending on where the safest caves form — book through an operator, since freelance cave access isn't safe or permitted.

What to Pack

• Warm, waterproof layers — the cave itself is cold, and you'll be outdoors before and after
• Sturdy waterproof boots; some tours provide crampons, but check in advance
• A camera with a fresh battery — cold drains batteries fast, and the low light inside the cave benefits from a wider aperture
  

👉 Pair the cave with the rest of the Golden Circle 🔗 or a stop at nearby waterfalls — see the full guide to Iceland's best winter waterfalls 🔗

Few places make you feel as small — in the best way — as standing inside a glacier that's been forming for centuries. If there's one experience worth building your entire Iceland winter trip around, this is it.

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