Train WiFi in Europe: Which Operators Actually Work

Last updated: 22 September 2026

Train WiFi in Europe has a median download speed of 7.6 Mbps, and in some countries it is close to nothing at all. That figure comes from Ookla’s Speedtest Intelligence data for the second quarter of 2025, covering fifteen European countries, and it is the single most useful number for anyone planning to work, navigate or stay reachable from a train.

The gap between the best and worst networks is enormous — one country is more than 150 times faster than another. Here is what the data shows, why the slow ones are slow, and the mechanical reason your phone struggles on a train even when the WiFi is fine.

How Fast Is Train WiFi in Europe?

Median download speeds vary by a factor of more than 150 between the top and bottom of the table. Ookla measured fifteen European countries during Q2 2025; these are the thirteen with published figures.

Put those numbers in context. At 7.6 Mbps you can hold a video call and load most websites. At 1.1 Mbps, the UK figure, a video call will not hold and a map tile will take its time. At 0.4 Mbps you are looking at text messages and patience.

Being Swedish, I will admit to some satisfaction at the top of that table, though it is not really a national virtue so much as a spending decision. Sweden pairs modern onboard equipment with rail-specific mobile coverage and has moved early on 5G-based rail communications. Living in Spain, I get the other end of the same lesson every time I take a train here.

Why Is Train WiFi So Slow?

Because train WiFi is not a dedicated connection to the internet. It is a router on the train that connects to the same public mobile networks your phone uses, then shares that one connection with every passenger on board. Everything that limits mobile coverage along the route limits the WiFi too, and then it gets divided.

Deutsche Bahn describes the trade-off in its own terms: WiFi speed depends on the connection between the trains and mobile networks, and on how many fellow passengers are online at the same time. Swiss Federal Railways says the same of its international services, noting that “the quality of the WiFi service depends largely on the available mobile network coverage”.

There is a genuine advantage to the onboard router, and it is worth being fair about it. Long-distance operators use bonding technology that combines several mobile networks at once — Deutsche Bahn’s system aggregates all three German operators in parallel, so a passenger on the train WiFi can draw on masts their own carrier does not use. In principle that beats a single phone on a single network.

In practice the sharing wins. Across the fifteen countries measured, nearly two in five connections still run on Wi-Fi 4, a standard from 2009, and around 22% use the congested 2.4 GHz band. Good backhaul into an old, crowded access point produces exactly the median in that table.

Why Does Your Phone Lose Signal on a Train?

Because you are sitting inside a metal box. A modern train carriage behaves as a Faraday cage, and the windows make it worse rather than better: they carry an ultra-thin metal coating for thermal insulation, and that coating sharply weakens mobile signal passing through it.

This is the part almost nobody explains, and it reframes the whole problem. Your phone is not failing because the countryside has no coverage. It is failing because the vehicle is engineered to keep heat in, and the same layer that does that also keeps radio waves out. Operators work around it by fitting signal repeaters inside carriages and along the line, which are expensive to install and have to be replaced as mobile technology moves on.

Here is the part that trips people up. If coated windows block signal, why does Sweden — where the insulation matters most — have the fastest train WiFi in Europe? Because the cage works against your phone, not against the train. The onboard router draws its connection from an antenna on the outside of the carriage shell, then hands it to you over short-range WiFi inside. The glass never sits between the router and the mobile network; it only sits between the mobile network and your handset.

Deutsche Bahn’s supplier puts the consequence plainly: a passenger connected to the onboard WiFi can use the signal of every cellular mast near the train, independent of the SIM card in their own phone. The train is standing outside the cage on your behalf.

The coating is also not a cold-weather feature. It is described as standard on modern train carriages generally, and Spain runs modern rolling stock while sitting at 1.5 Mbps. It cannot explain the ranking in either direction. Sweden’s lead is a spending decision: newer onboard equipment running on 5 GHz rather than legacy Wi-Fi 4 on the congested 2.4 GHz band, several mobile networks bonded together, rail-specific trackside coverage, an early move to 5G-based rail communications, and coverage obligations written into spectrum licences.

If anything, the Faraday cage is an argument for onboard WiFi. The better insulated the carriage, the worse your own phone performs inside it, and the more useful that rooftop connection becomes. Sweden built the thing the physics calls for.

Does Switzerland Have WiFi on Trains?

Mostly not, and it is second in Europe for train WiFi speed anyway. Swiss Federal Railways offers free onboard WiFi only on its Giruno and Astoro trains running between Switzerland and Italy or Germany. On ordinary domestic services there is no onboard WiFi to connect to.

Switzerland instead invested in making mobile networks work on the rails: repeaters in carriages and trackside, and coverage inside tunnels including the Gotthard Base Tunnel. The reasoning was that onboard WiFi would have meant buying capacity from the mobile operators regardless, and most Swiss travellers already carry generous data plans.

For a visitor this produces a specific and easily missed situation. On a Swiss domestic train there is often no WiFi network in the list at all, and the connectivity you get is whatever your own SIM or eSIM can pull from an unusually good trackside network. If you arrive expecting to hop onto train WiFi the way you might in Germany or France, there is nothing to hop onto.

Which Operators Actually Work?

Deutsche Bahn’s long-distance ICE services are among the better-equipped in Europe, using multi-operator bonding across the German networks, and Germany’s 14.9 Mbps median sits comfortably above the European figure. Coverage is strong on major high-speed lines and patchier in tunnels and rural stretches.

Eurostar combines mobile signals along its route with trackside infrastructure through the Channel Tunnel, and typical speeds land around 5 Mbps with peaks higher. That is enough for messaging and email across a full carriage, and not enough for a video call you actually care about.

France at 19.1 Mbps and Ireland at 26.3 Mbps do well. Italy at 4.8 Mbps is below the median, and Spain, the UK, Austria and the Netherlands are at the point where the WiFi exists more as a listed amenity than a usable service. If your itinerary runs through that lower group, plan as though there is no WiFi and treat any you find as a bonus.

Should You Rely on Train WiFi?

Not for anything that matters. Speed is only half the issue: even where the WiFi is fast, it exists only while you are on the train. The connectivity problems of a rail trip are mostly outside the carriage: at the station, on the platform deciding whether to take an earlier service, walking to a hotel with a phone that needs a map.

That last point is worth taking seriously if you are travelling on a rail pass. Adding a journey to a mobile pass requires a live connection at the moment you add it, and the pass itself has to check in online periodically or it goes inactive — we set out the full rules in does your Interrail pass work without internet. Station WiFi and a captive portal are a poor place to discover this.

Your own data is what covers the gaps. If your home plan roams across your route at no extra cost, you are already fine. If you are travelling from the US, Canada, Japan or the Gulf states, your phone is probably eSIM-only and cannot take a local SIM at all — see which iPhones are eSIM-only — which makes sorting it before departure the only comfortable option. It is also worth knowing how much data a travel day actually uses before choosing a size.

Frequently Asked Questions

How fast is WiFi on European trains?

The median across fifteen European countries is 7.6 Mbps, based on Ookla Speedtest Intelligence data from Q2 2025. Sweden is fastest at 64.6 Mbps, while the Netherlands (0.4 Mbps), Austria (0.7 Mbps) and the UK (1.1 Mbps) are at the bottom.

Is train WiFi free in Europe?

On most long-distance operators that provide it, yes, though you usually have to accept terms on a captive portal page first. Some regional and budget services offer none at all, and availability varies widely between long-distance and local trains.

Why does train WiFi keep dropping?

Because it depends on mobile coverage along the track. When the train enters a tunnel, a cutting or a rural stretch with weak signal, the onboard router loses its connection just as your phone would, and everyone on board loses it at once.

Can I work on a European train?

On the better networks, yes for email, messaging and documents. Video calls are unreliable almost everywhere, because the connection is shared across the carriage and speeds drop sharply when the train moves through poor coverage. Download anything you need in advance.

Do Swiss trains have WiFi?

Only on Giruno and Astoro services running internationally to Italy and Germany. Domestic Swiss trains generally have no onboard WiFi; the country invested in trackside and in-carriage mobile repeaters instead, including coverage inside the Gotthard Base Tunnel.

Is train WiFi faster than my own mobile data?

Sometimes. Onboard routers bond several mobile networks at once, which can beat a single phone on one carrier, and the router’s antenna sits outside the carriage while your phone sits inside the metal shell. But the result is shared with every passenger, which is why medians stay low.

If coated windows block signal, why is Sweden fastest?

The coating weakens signal reaching your phone inside the carriage. It does not affect the train’s own connection, which is picked up outside the shell and passed to you over short-range WiFi. Sweden’s lead comes from newer onboard equipment, bonded mobile networks and rail-specific trackside coverage.

Should I get a data plan if the train has WiFi?

Yes, if you need connectivity off the train. Train WiFi covers only the journey itself, not the platform, the station exit or the walk to your accommodation, and it cannot be relied on for time-sensitive tasks like adding a leg to a rail pass.

Related Reading

• Does Your Interrail Pass Work Without Internet?
• Which iPhones Are eSIM-Only?
• Will Google Maps Work Without Wi-Fi Abroad?
• How Much Data Does Travel Actually Use?
• Can You Video Call Abroad Without Wi-Fi?

If your route crosses countries where the WiFi thins out, our Europe travel eSIM plans install before you leave and connect to local networks as you go.