eSIM for Denmark — Copenhagen, LEGOLAND & the Fjords

In short: A Denmark eSIM gives you local data as soon as you land in Copenhagen, with no roaming or physical SIM to look for at the airport. For a week between the capital, Aarhus and LEGOLAND in Billund, 5-7 GB is more than enough; activate it from home and it connects automatically upon arrival.

Traveling to Denmark is an incredible experience, but arriving without data can ruin the first moments: no Google Maps to get out of the airport, no way to look for the hotel, no way to contact whoever is waiting for you. The solution is simple and has been the standard among experienced travelers for years: an eSIM for Denmark.

In this guide, we tell you everything you need to know before traveling to Denmark: what coverage you can expect in Copenhagen, Aarhus, and Billund, how many GB you really need, how to activate the eSIM, and the best connectivity tips from those who have already traveled there.

Spoiler: with PuraSim, you have local data from the moment the plane lands, without contracts, without a physical SIM, and without bill surprises.

Why do you need an eSIM to travel to Denmark?

International roaming from European and Latin American operators can cost you between 10 and 30 euros or dollars per day in Denmark. A local eSIM gives you data at a local price, without absurd daily limits and with 4G or 5G speeds where the network allows.

The difference between going with roaming and with a PuraSim eSIM is huge:

• Traditional roaming: fixed daily rate even if you barely use data, speed often limited to 3G, surprise bills upon return.
• PuraSim eSIM for Denmark: you only pay for what you contract, full local data at maximum available speed, activation in 5 minutes from anywhere.

Additionally, with an eSIM, you can keep your original phone number active to receive calls and SMS, as the eSIM operates in a separate virtual slot. You don't have to choose between local connectivity and your usual number. If you want to understand the technical difference in more detail, we have a complete comparison of eSIM vs roaming and an explanation of what data roaming is and why it charges you what it charges you.

Be aware of an important nuance that almost no one explains well: if you travel with a number from a European Union or European Economic Area country, the "roam like home" regulation already covers you for free in Denmark, because it is an EU member country (although outside the Eurozone). In that case, buying an additional eSIM does not make sense unless you want to separate your data line for privacy or carry a backup plan. Where it almost always makes sense is if you travel from outside the EU—Latin America, the UK, the United States—because there, roaming from your home operator is very expensive or simply non-existent.

For Denmark, having stable data is especially important because a good part of the trip involves moving between cities: Copenhagen, Aarhus, Odense, and Billund are not close to each other, and losing coverage mid-train journey means losing track of your planned route. Coverage in the three main cities is generally very good, but there are areas—especially inland Jutland and the smaller islands—where without a well-configured local eSIM, you would be blind.

Data coverage in Denmark: what to expect

Coverage in Denmark varies quite a bit depending on the area. In major urban and tourist areas (Copenhagen, Aarhus, and Billund) you will find 4G networks and in some cases 5G. The experience is comparable to what you would have at home.

However, as in any destination, there are areas where the signal is more limited:

• Major cities: Stable 4G/5G, perfect for streaming, browsing, and video calls.
• Rural areas and nature: coverage may drop to 3G or even lose signal in remote spots.
• Transport: trains, ferries, and intercity buses have variable coverage; generally good in cities.

Key tip: The Copenhagen metro has perfect coverage; ferries to the southern islands have good 4G signal

To maximize coverage in Denmark, PuraSim uses the local networks with the best available infrastructure through local roaming agreements. This means that your eSIM automatically connects to the network with the best signal at all times.

How many GB do you need for traveling to Denmark?

This is the million-dollar question. The short answer: 5-7 GB for 1 week. The long answer depends on how you use your phone during the trip.

Here's a guide to actual daily consumption by usage type:

• Basic use (maps, messages, occasional queries): 300-500 MB/day
• Moderate use (social media, photos, continuous browsing): 800 MB-1.5 GB/day
• Intensive use (remote work, streaming, video calls): 2-4 GB/day

For a trip to Denmark lasting 1 week, our recommendation is to contract 5-7 GB for 1 week. This is enough for most travelers with normal use: Google Maps running constantly, Instagram, WhatsApp, and some occasional searches.

If you're going to work remotely or plan to make frequent video calls, upgrade to the next plan. PuraSim plans allow you to top up data if you run out, so it's not a problem if you fall short: you won't suddenly lose coverage.

Indicative reference based on usual consumption patterns; adjust upwards if you travel with more than one device connected to the same plan.

PuraSim offers specific plans for Denmark with different data and duration options. Check out the complete collection in our plans for Denmark.

How to activate your eSIM for Denmark step-by-step

Activating a PuraSim eSIM is as simple as scanning a QR code. There's no need to go to a store, no need to wait for any shipment. The entire process takes less than 5 minutes:

1. Purchase your plan on purasim.com for Denmark. You will receive an email with the QR code.
2. Install the eSIM: go to Settings → Mobile Data → Add Data Plan (on iPhone) or Settings → Connections → SIM Manager (on Android).
3. Scan the QR code or manually enter the activation details.
4. Configure mobile data: make sure to select the PuraSim eSIM as the default data line.
5. Activate data roaming in the PuraSim eSIM settings (necessary for it to work on local networks).

You can install the eSIM before leaving home and configure it to activate automatically when you arrive in Denmark, or activate it manually when you land.

Important: verify that your phone is eSIM compatible before purchasing. Most iPhones from XS, Samsung Galaxy from S20, and Google Pixel from 3 are compatible. Check the complete list on purasim.com. If it's your first time installing an eSIM and you want step-by-step instructions with screenshots for your specific model, we have a dedicated guide on how to install an eSIM.

One detail that often catches people by surprise: install the eSIM with Wi-Fi before leaving home, but do not activate it until you land in Kastrup (Copenhagen airport) or cross the land border through Jutland. If you activate it in Spain or Latin America in advance, you start using up the validity days of the plan without yet being in Denmark, and many plans count validity from the first network connection, not from the purchase.

Local connectivity tips for Denmark

Beyond getting the right eSIM, there are a few tricks that make a difference in staying connected throughout your trip to Denmark:

• Download offline maps before leaving. Google Maps and Maps.me allow you to download maps of all of Denmark or specific cities. This way you can navigate without using data when you are in areas with weak signal.
• Use airplane mode strategically. On long flights, trains, or ferries, activating airplane mode preserves battery and data. Connect to available WiFi if there is any.
• WhatsApp and Telegram over data. Calls via these apps consume much less than an international call. Set them up for high-quality calls only when you are on WiFi.
• Share connection carefully. The hotspot consumes data quickly, especially if there are other devices connected (laptop, tablet). Use it only when necessary.
• Watch out for roaming when crossing to Sweden. If you take the train excursion across the Øresund bridge to Malmö (very common from Copenhagen, barely 35 minutes), your mobile might briefly connect to a Swedish network before regaining the Danish one. This is not a problem if your eSIM covers several European countries, but if it's only for Denmark, check that the plan allows it or deactivate data while crossing if you want to avoid surprises.
• Be careful with public WiFi in cafes. Denmark has widespread free WiFi in cafes and libraries, but connecting to open networks without protection is not a good idea if you are going to check your bank or email. If you are interested in the topic, we explain when it pays to use a VPN while traveling with an eSIM.

And to get the most out of every GB of your plan, we have an article with specific tricks to save data with your travel eSIM that apply equally well in Copenhagen as in any other destination.

With these tricks and a good data plan from PuraSim, your trip to Denmark will have the connectivity you need without unnecessary expenses.

Myths about eSIM in Denmark (and what almost no one tells you)

Before buying, it's worth debunking some common misconceptions that lead to overspending or running out of data at the worst possible moment.

• Myth: "Denmark is an expensive Nordic country, so the eSIM will be too." The price of an eSIM does not depend on the cost of living in the country, but on the data agreement the provider has with local networks. Denmark has a very dense mobile infrastructure (it's a small, flat country), so in practice, plans are no more expensive than those in other European destinations with less coverage.
• Myth: "If I have an European tariff from my operator, I don't need anything else." Only true if your line is from an EU/EEA country. If you are from the UK, USA, Colombia, Mexico, or any country outside that bloc, your home operator will charge you full international roaming in Denmark, which is precisely where a local eSIM pays off.
• Myth: "In such a small country, you don't need that many GB." The size of the country does not determine consumption: what determines it is how much you browse, upload photos, or make video calls. Billund (where LEGOLAND is located) is a small town with very good 4G coverage thanks to Denmark's antenna density, so you won't have signal problems there, but you will spend the same GB on maps and photos as in any other city.
• What almost no one tells you: In Denmark, almost all public transport in Copenhagen (metro, S-tog, buses) has good data coverage, so you can carry your digital ticket without fear of losing connection just when you pass the turnstile. Where caution is advisable is inside some long-distance ferries between islands, where the signal cuts out for several minutes in open water: download your ticket and the map of the next stop before boarding.
• What almost no one tells you: If your route includes Bornholm (the Baltic island, more than two hours by ferry from Copenhagen or a short flight), coverage inside the island—forest and cliff areas—is weaker than in Rønne port. It's worth having the map downloaded if you're going hiking along the coast.

And to be honest: if your trip is an express weekend to Copenhagen and your Spanish operator already includes roaming in the EU at no extra cost, you don't need to buy anything. Save the eSIM for longer trips, for when you want to separate work and personal data, or for when you come from outside the European Union. Compared to carrying a physical international chip, the eSIM still wins in convenience because there's no need to find a store or change the physical card, but if roaming already covers you for free, that money is better spent on a coffee in Nyhavn.

If your Scandinavian route doesn't just stay in Denmark and you're going to cross into Sweden, Norway, or Germany, consider a Europe eSIM plan that covers several countries with a single plan, instead of buying an eSIM for each border you cross.

Frequently Asked Questions

Written by Marc González Sáez Founder of PuraSim and a specialist in eSIM and connectivity for travelers. He has been helping people travel connected worldwide for years without overpaying for roaming, and personally tests eSIMs in each destination before recommending them.