If you're planning your trip and wondering how to get internet in Denmark without getting a nasty bill, let me tell you straight from personal experience. The good news is that Denmark is a European Union country, so often your Spanish plan already covers you. But there are nuances, exceptions, and some little-known warnings that you should consider before deciding which one truly suits you.
Internet in Denmark: all options at a glance
In Denmark, you have four ways to connect: roaming from your Spanish plan (included as it's an EU country), a data eSIM, a local Danish SIM, or hotel and cafe Wi-Fi. For most European travelers, roaming is enough; those traveling from outside the EU benefit from an eSIM.
That's the short answer. The long one depends on your plan, how much data you use, and whether you're only going to mainland Denmark or planning to cross into territories like the Faroes. Before diving into each option, here's a comparison table so you can see at a glance what suits you best according to your profile. Denmark has one of the best mobile infrastructures in Europe, with almost universal 4G and 5G coverage already reaching 83.9% of the population, so network quality won't be your problem: the decision is about not overpaying.
| Option | Estimated cost | When to choose it |
|---|---|---|
| Roaming (Spanish plan) | €0 extra within your limit | You live in the EU and have plenty of data |
| Data eSIM | From €3-5 for several GB | You're from outside the EU or use a lot of data |
| Local Danish SIM | From ~100 DKK with data | Long stays or a Danish number |
| Hotel Wi-Fi | Almost always free | Support, never your only network |
Roaming: Denmark is in the EU (and what that means)
Denmark is part of the European Union, so the "Roam Like At Home" roaming regulation applies. In plain English: you use your mobile just like in Spain, with the same included gigabytes in your plan and no extra charges for calls, messages, or browsing. If you have 20 GB per month in Spain, you can use those same 20 GB in Copenhagen without paying a cent more.
There's an important nuance: the fair use policy. Your operator can set a data cap for roaming based on what you pay. As of 2026, the European calculation is approximately (monthly price without VAT ÷ 1.10) × 2 gigabytes, and if you exceed the cap, the excess is charged at a maximum of around €1.10/GB. For a week-long getaway, you'll rarely reach that limit with normal use.
It works with all national operators: Movistar, Vodafone, Orange, Yoigo, Simyo, Pepephone, Lowi, and others. If you want to delve deeper into the differences compared to buying data separately, I compare them in eSIM vs roaming, and if you're concerned about costs outside the EU, here I explain how much international roaming costs.
When an eSIM truly pays off
I'll be honest with you, because not everything works for everyone. If you're a resident in Spain or any EU country, have a modern plan with plenty of gigabytes, and will make reasonable use in mainland Denmark, roaming already covers you and you don't need anything else. Buying data separately would be paying twice for the same thing.
That said, there are clear profiles for whom it truly pays off to carry separate data:
- Travelers from outside the EU (Latin America, UK, USA): they don't have Roam Like At Home, and classic roaming can cost a fortune.
- Old or low-data plans: if your plan includes 2-3 GB or less, it runs out quickly with maps and photos.
- Heavy data users: remote work, video streaming, or tethering can easily exceed the fair use cap.
- Those who want to separate lines: keep the Spanish number for WhatsApp and calls, and use data on another line.
If you're debating between a physical or digital card, I break it down in eSIM vs local SIM. And if you still don't know exactly what this technology is, start with what an eSIM is to understand how to install it in two minutes.
Important warning: Faroe Islands and Greenland are not in the EU
This is the point almost no one tells you about, and it can ruin your bill. The Faroe Islands and Greenland are territories of the Kingdom of Denmark, but they are not part of the European Union or the European Economic Area. In other words: free EU roaming does not apply there, even if you are technically still in Denmark.
Being in Denmark doesn't always mean being in the EU. In the Faroes and Greenland, your Spanish SIM will incur separate roaming charges, and it can be very expensive if you don't disable it.
If your trip includes these destinations, check the conditions with your operator before you leave, and, as a precaution, disable mobile data upon landing until you confirm rates. In the Faroes, local providers like Føroya Tele and Nema operate, and in Greenland, the network is run by Tusass (formerly TELE-POST). Also, keep in mind that many travel eSIMs labeled "Denmark" only cover the mainland: if you're going to the North Atlantic islands, explicitly check if they are included or look for a specific plan. Coverage in these territories is good in inhabited areas but irregular in mountainous and remote regions.
Danish local SIM: TDC, Telia, Telenor and 3
The Danish market relies on four main operators: TDC, Telia, Telenor, and 3 (Hi3G). Physically there are three networks: TDC NET, the one shared by Telia and Telenor in a joint venture, and 3's. All offer excellent coverage, but in independent rankings, TDC usually wins in terms of coverage experience and 5G.
You can buy a prepaid SIM in operator stores, supermarkets, and kiosks. It's a reasonable option if you're staying for weeks or months, or if you need a local Danish number. For a short trip, however, it's usually more hassle than benefit: queues, sometimes registration with ID, and less flexibility than activating data from home.
| Operator | Physical network | Profile |
|---|---|---|
| TDC / YouSee | TDC NET | Best coverage and 5G |
| Telia | Telia-Telenor | Good balance, prepaid with data |
| Telenor | Telia-Telenor | Easy to find in stores |
| 3 (Tre) | Hi3G | Aggressive data prices |
If you want a thorough comparison of this option with digital alternatives, you can find it in eSIM vs local SIM.
eSIM: the convenient option for data
An eSIM is a digital card that you install on your mobile by scanning a QR code, without having to go to any store or change your physical SIM card. You activate it from home before you fly, and as soon as you land in Copenhagen, your data is working. For me, it's the most practical way to connect when roaming doesn't cover me or when I want to control spending down to the cent.
The good thing is that you can keep your Spanish number active for calls and WhatsApp while data runs on the digital line, without changing cards. You choose a plan with the gigabytes you expect to use, install it, and you're good to go. If you've never used one, the guide what is an eSIM explains it step by step.
For Denmark, you have all the coverage, pricing, and installation information in the eSIM guide for Denmark. And if you want to get straight to it, you can buy your Denmark eSIM in a couple of clicks: it activates upon arrival, and you forget about bill surprises. Remember that you need a compatible phone, which is common in models from recent years.
Hotel Wi-Fi and public Wi-Fi: useful, but limited
Denmark is a very digitalized country, and you'll find free Wi-Fi almost everywhere: hotels, cafes, libraries, shopping centers, airports, and even many trains and buses. Hotel Wi-Fi is perfect for downloading offline maps at night, making long video calls, or uploading your day's photos without using your data.
However, don't make it your only network. You won't always have a signal handy on the street, and open public networks have their security risks: avoid logging into your bank or entering sensitive passwords without a VPN. Plus, the speed of shared Wi-Fi in a crowded hostel can be frustrating exactly when you need to find your way.
My practical recommendation: use Wi-Fi as support for heavy tasks and always have your own mobile data (roaming or eSIM) for what happens outside your accommodation, which is where you truly need it: maps, transportation, translations, and tickets. If you're weighing portable Wi-Fi against other options, I compare it in eSIM vs pocket Wi-Fi.
Coverage by cities and islands
Mobile coverage in Denmark is among the best in Europe, and you notice it as soon as you step off the plane. In Copenhagen and its metropolitan area, you'll have strong 5G almost everywhere, just like in Aarhus, Odense, and Aalborg, the next largest cities. In urban centers, you won't miss anything.
The country is an archipelago spread between the Jutland peninsula and large islands like Zealand (where the capital is) and Funen. The network effectively covers this geography: the bridges connecting the territory, such as the Øresund Bridge to Sweden or the Great Belt Bridge, maintain signal, and common train links and tourist routes are covered. 5G already reaches most of the population, and 4G is practically universal.
Where might it falter? In very sparsely populated rural areas, some small southern islands, and isolated coastal stretches, where you might temporarily drop to 4G or see fewer bars. For a typical trip through cities and tourist spots, the connection will be fast and stable almost all the time. You can find detailed information by operator in the eSIM guide for Denmark.
How much data do I need for my trip?
The million-dollar question. The short answer: less than you think if you use your accommodation's Wi-Fi for heavy tasks. For an average traveler who checks maps, messaging, social media, and some browsing, a couple of gigabytes a day is more than enough. If you also use Wi-Fi at night, 1 GB daily is plenty.
Streaming video and long video calls are what really drive up consumption. If you plan to watch series with mobile data or go live, adjust your calculations upwards. Here's a realistic reference based on your usage type for a week-long getaway:
| Usage type | Data per day | Total 7 days |
|---|---|---|
| Light (maps, chat) | ~0.5 GB | 3-4 GB |
| Medium (social media, some video) | ~1 GB | 7-8 GB |
| Intense (streaming, tethering) | ~2-3 GB | 15-20 GB |
With these numbers, deciding is easy: if your Spanish plan includes more gigabytes than you'll use, stick with roaming; if you're cutting it close or coming from outside the EU, calculate your total and choose a suitable data plan. I always prefer to have a bit extra rather than being stranded looking for Wi-Fi with my luggage in tow.
Frequently asked questions
Is roaming in Denmark free with my Spanish plan?
Yes. Denmark is an EU country, so "Roam Like At Home" applies: you use your included gigabytes without extra charges, with the same limit as in Spain. You would only pay extra if you exceed your plan's fair use cap.
Do I need an eSIM if I am a resident in Spain?
Normally not, if you have a plan with enough data and are traveling to mainland Denmark. An eSIM is most beneficial for those coming from outside the EU, who have an old plan with little data, or who consume a lot for remote work or video streaming.
Does roaming work in the Faroe Islands and Greenland?
No. The Faroe Islands and Greenland are part of Denmark, but they are not in the EU or the EEA, so free roaming does not apply and is charged separately, often expensively. Check rates with your operator and disable data upon arrival as a precaution.
How many gigabytes do I need for a week in Copenhagen?
For average use of maps, messaging, and social media, 7-8 GB is more than enough for seven days, especially if you take advantage of hotel Wi-Fi at night. If you watch a lot of video or tether, estimate 15 GB or more.
Is a local Danish SIM or an eSIM better?
It depends on the length of your stay. For short trips, an eSIM is more convenient: it activates from home without queues or registrations. A local Danish SIM (TDC, Telia, Telenor, or 3) makes sense for long stays or if you need a Danish number.
Can I only use free Wi-Fi during my trip?
As your sole network, I don't recommend it. Hotel and cafe Wi-Fi is abundant and useful for heavy tasks, but on the street, you'll be without a connection for maps or transportation. Always have your own data, even a small plan.
Is there good 5G coverage throughout Denmark?
In cities like Copenhagen, Aarhus, and Odense, it's excellent: 5G reaches most of the population, and 4G is almost universal. In very isolated rural areas or small islands, it might drop to 4G, but for a tourist trip, the network is fast and stable.
Conclusion
Connecting in Denmark is straightforward if you understand your situation. If you reside in the EU and your plan includes plenty of gigabytes, roaming already covers you without paying extra in mainland Denmark. If you're coming from outside the EU, use a lot of data, or your plan is limited, an eSIM offers affordable data and total control. And don't forget the key warning: the Faroes and Greenland play by different rules. It all comes down to planning intelligently before you leave. If you want the most convenient option, check out the eSIM guide for Denmark and travel connected from minute one.
