eSIM, roaming or local SIM card — what to use in Europe?
Three options, one question: how to stay connected abroad without overpaying? We compare cost, convenience and real-world scenarios — so you can decide before you board.
Three options, one question: how to stay connected abroad without overpaying? We compare cost, convenience and real-world scenarios — so you can decide before you board.
For most trips to Europe an eSIM (Airalo) is the simplest and cheapest option: cheaper than roaming, no need to hunt for a shop like a local SIM, and it works the moment you land. Roaming only makes sense for a short trip inside the EU on a plan that already includes EU data. A local SIM card rarely pays off for a typical traveller.
Get an eSIM on Airalo →An eSIM is the best fit for multi-country trips — no swapping cards or hunting for a new carrier in every destination. Airalo offers regional plans covering all of Europe that you activate before you fly: scan a QR code, the eSIM installs on your phone, and it's live from the moment you land. No queues, no passport registration, no risk of shops being closed on a Sunday.
It's also the best option for short trips — weekends, city breaks — where buying a local SIM makes no economic sense. Airalo plans start at a few euros and scale up for longer stays. Your home number stays active in parallel, so bank SMS messages and incoming calls arrive as normal.
EU roaming is governed by the "Roam Like At Home" rule — if your home plan includes a data allowance, you can use it abroad in other EU/EEA countries at no extra cost. This works well for a short trip within the EU zone when you already have a generous data plan.
Watch out for two traps. First, most carriers impose a fair-use cap on roaming (typically a few GB), after which speeds drop. Second, the rule does not apply outside the EU/EEA — Turkey, Morocco, Ukraine, and the United Kingdom (post-Brexit) may all incur roaming charges. Check your contract terms before you travel.
A local SIM card pays off for a long stay in a single country — several weeks or months — when you need a local phone number, for example for renting accommodation or working locally. The per-GB cost is usually the lowest of all three options in that scenario.
The downsides are real: you need to find a carrier shop, often outside the city centre, wait in a queue, and register with your passport. In some countries (France, Germany) you can do this online or at a kiosk, but in others (the Balkans, Turkey) the process is more involved. For a week's trip around Western Europe, it simply isn't worth it.
One country and a long stay? A local SIM may pay off. Multiple countries or a short trip? An eSIM wins immediately.
Does it include a large EU data allowance? Roaming may be enough. Make sure the fair-use cap is higher than your typical usage and that every country on your route falls within the EU/EEA zone.
Most phones from 2019 onwards support eSIM — iPhone XS and later, Samsung Galaxy S20+, Pixel 3+. Check in your phone's settings or on the manufacturer's website.
Airalo lets you buy a plan online and activate it immediately or set a start date. Scan the QR code at home — you won't have time at the airport.
| Option | Cost | Activation | Best for |
|---|---|---|---|
| eSIM (Airalo) Our pick | From ~€3 / 1 GB | Online, before you fly | Most trips |
| Roaming | Free (EU) or expensive | Automatic | Short EU trip with a large home plan |
| Local SIM card | Cheapest for long stays | In-store, with passport | Multi-week stay in a single country |
For most travellers an eSIM is the better choice: cheaper than paid roaming, works across multiple countries at once, and requires no logistical effort. Roaming is only convenient if your home plan already includes an EU data package and you're travelling for a short time within the EU zone. Airalo plans start at a few euros and can be purchased before you fly.
Yes, in most cases. EU roaming is only "free" if it's already included in your plan — and usually with a fair-use cap. If you exceed the cap or travel outside the EU, charges can be steep. An Airalo eSIM costs a few euros for 1–10 GB with no bill surprises.
Most smartphones released from 2019 onwards support eSIM: iPhone XS and later, Samsung Galaxy S20 and later, Google Pixel 3 and later, and many Huawei and other models. Check in your phone's settings (usually under "SIM" or "SIM cards") or on the Airalo website, which maintains an up-to-date list of compatible devices.
Rarely. A local SIM makes sense for a stay of several weeks or longer in a single country when you need a local number. For a typical European holiday — a few days to two weeks — an Airalo eSIM is more convenient and usually cheaper once you factor in the real cost of time and logistics.
Broadly yes for EU countries — the "Roam Like At Home" rule lets you use your home data allowance abroad at the same price. But beware: most carriers impose a fair-use limit (typically a few GB), and the rule does not cover Turkey, Morocco, Ukraine, or the United Kingdom (post-Brexit). Check your plan's terms and conditions.
You buy a plan on the Airalo website or app, choosing a country or region (e.g. Europe). You receive a QR code, which you scan in your phone's settings — the eSIM installs automatically. You can set an activation date. Your existing SIM card stays active in parallel, so you keep your home number.
Yes. An Airalo eSIM runs alongside your physical SIM — you have two "slots" in one phone. Your home number stays active for incoming calls and texts, while mobile data runs through the Airalo eSIM. You remain reachable on your usual number throughout your trip.
Maps and mobile tickets working the moment you land.
Read → 🚆Trains and buses across Europe — find the cheapest ticket.
Read → 🚗For coasts and mountain villages the trains don't reach.
Read → 🎫Skip-the-line entry tickets — best booked in advance.
Read → 🛡Peace of mind: medical cover, COVID, baggage, cancellation.
Read → ✈️The cheapest flights across Europe in one search.
Read →A new European city under the lens — how to get there cheaply, what to skip, and which booking saves you the most. No fluff.