Buying a SIM at Adolfo Suárez Madrid–Barajas, terminal by terminal

The EU question comes first

Spain is in the EU. If your mobile contract is from any EU or EEA country, roam-like-at-home means your usual allowance works in Madrid from the moment you land, at no extra cost. No kiosk, no queue, no passport scan, no purchase. A very large share of Barajas arrivals fall into this group, and for them this page has exactly one action: check your plan's fair-use data cap before you fly, because budget contracts sometimes set it low enough to run out on a two-week trip.

Everything that follows is for arrivals from outside the EU and EEA.

What is where, across four terminals

Barajas runs T1 through T4, and T4 handles most international traffic. The retail picture we hold:

• T4 arrivals has an Orange kiosk — the only carrier-branded counter in our record for the airport.
• Across the terminals, Relay and FNAC stores sell SIM kits from Movistar, Orange and Vodafone. These are packaged retail products rather than a staffed carrier desk, which matters if you want advice as well as a SIM.
• The queue runs around 10 minutes, which is brisk for an airport this size.

Two honest gaps. We hold no opening hours for the Orange kiosk or for any of the stores, so a late-night arrival is not something we can plan for you. And we hold no separate record for the T4S satellite, where a good number of long-haul flights actually park before the shuttle across — assume you will be buying after you reach T4 proper, not before.

Spanish prepaid SIMs require passport or ID registration. Straight off an international flight this is a formality rather than an obstacle, but it does mean the purchase involves a document scan and a form, which is part of why ten minutes is the queue rather than two.

The eSIM route skips it. There is no registration step at purchase, no counter and no wait.

What the convenience costs

Our country record puts a typical Spanish airport SIM at around $18. Spain is one of the better-documented markets we cover — the prices below were read from the providers' own Spanish checkouts on 13 August 2026, and Saily's are verified here as well as Airalo's, which is not true everywhere.

The ladder runs to 50 GB and that top rung is the cheapest data in Spain at $0.78 a gigabyte — worth reading before you assume the small plans are where the value is. In the middle of the range Airalo's 10 GB for 30 days at $14.00 undercuts Saily's equivalent, and both undercut the counter. Airalo also sells unlimited tiers, verified at $23.50 for 7 days and $63.00 for 30. Holafly's unlimited plans are indicative listings we have not read at checkout.

Ten gigabytes for a month, live before you land, costs less than the airport wants for a starter pack. That is the argument in one line.

Which network you end up on

If you buy from Relay or FNAC you know exactly what you are getting, because the box says Movistar, Orange or Vodafone. That is the one real advantage the terminals have over an eSIM.

With travel eSIMs you mostly do not know. Airalo, Saily, Nomad and Holafly publish no host network for Spain — the Spanish carriers this page once credited to Holafly's own website came from our data rather than from Holafly — eSIM Go has no consumer page at all, and we hold no read of eSIMCard's Spanish listing. There is nothing here to choose a plan on. For Madrid itself this is academic — all three Spanish networks work across the city and the Metro. It matters more for rural Extremadura or the mountains.

Getting out of the airport, and what we would do

Metro Line 8 runs from the terminals to Nuevos Ministerios in 30 to 40 minutes, the most useful connection for central and northern Madrid. Having data before you reach the platform is the difference between a live map and a wall diagram, which is a reasonable argument for arriving with an eSIM already installed rather than queueing first.

EU arrivals: buy nothing. Non-EU arrivals: install an eSIM before boarding and walk past the kiosk. If you would rather have a Spanish network by name and are happy paying roughly double for it, T4's Orange kiosk is a ten-minute detour and the Relay and FNAC stores are a fallback across the rest of the airport. The full Spanish ladder is on our Spain hub.