Aena runs Madrid-Barajas as two hubs, and the map shows why they feel unrelated: Terminal 4 and its satellite, Terminal 4S, sit apart from Terminal 2 and Terminal 3, with the underground APM train as the only way between the two the airport itself describes as the T4–T4S link, no more than a few minutes each way. Terminal 1, immediately south of Terminal 2 in the same walkable cluster Air Europa splits its departures across, is not one of the shaded buildings here. Terminal 2 and Terminal 3 stand close enough to cross on foot, sharing a single Metro line 8 station, Aeropuerto T1-T2-T3; Terminal 4 has its own station on the same line plus the only Cercanías C1 stop at the airport. Iberia is explicit that a T4S boarding pass still means checking in and entering at Terminal 4 first — the satellite is reached only from inside, never from the kerb.
The shaded buildings are the terminals as they operate today, with names verified by us — the base map’s own labels can lag behind reality. Blue P squares mark the official car parks that publish a name; the dark square is the station.
Terminal areas and names verified by us. Base map data © OpenStreetMap contributors.
More detail: Terminal guide · Parking · Getting to and from the airport