Madrid Barajas (MAD): The Complete Layover Guide

How MAD actually works

Check which terminal both of your flights use before you do anything else. That one detail decides whether your Madrid layover is pleasant or a sprint.

The T4 complex is the Iberia and oneworld hub: T4 for Schengen and domestic departures from the J gates, T4S for long haul and non Schengen from the S gates. A free underground train links them in about 3 minutes, runs 24 hours, and does not involve a second security check, though passport control sits between you and the S gates when leaving the Schengen zone. The older T1, T2, and T3 complex handles most other carriers: non Schengen flights from T1's A and B gates, Schengen from T2 and T3. Those three are one connected building you can walk across in 4 to 10 minutes airside.

Between the complexes there is nothing airside. The free shuttle bus runs around the clock, every 5 minutes by day and every 20 overnight, and the ride itself is 10 to 15 minutes. The full transfer is what hurts: walk out, wait, ride, walk in, and queue for security again. Aena's own guidance treats 90 minutes as the minimum for a cross complex connection and we agree with the travel agents who say book 2 hours or do not book it. Non EU passport holders should also note that crossing landside means formally entering Spain, which can require a Schengen visa. Verify before travel.

The lounge situation is tidy: six Aena run VIP salons, all on Priority Pass, one per terminal area. Cibeles in T1 and Neptuno in T4S serve non Schengen departures and Neptuno never closes, which makes it the obvious overnight refuge. Plaza Mayor and Retiro cover T4, Puerta de Alcalá and Puerta del Sol cover T2 and T3. Paid entry runs 34 to 50 euros depending on the salon. Iberia's Dalí lounge in T4 and Velázquez lounge in T4S are reserved for oneworld premium traffic, and Velázquez is the best lounge in the airport by most accounts.

Sleeping changed in 2025. Since July 24, Aena admits only ticketed passengers and staff overnight, so the days of arriving at midnight for a 7am flight without a boarding pass in hand are over. Airside, T4 and T4S are the comfortable terminals, with sofas around the K boarding area and reclining chairs near gate 17 in T4S. The dedicated rest zones near gates J50 and J51 were removed in September 2025. For real sleep, Air Rooms on floor 1 of T4 rents proper rooms from about 45 euros for 3 hours, and GettSleep opened 32 soundproof capsules airside in T4S in September 2025 at similar rates.

Gate geography helps you predict the passport situation. In the older complex, T1's A and B gates handle non Schengen flights while T2 and T3 cover Schengen from the C, D, and E gates; in the newer one, T4's J gates are mostly Schengen and domestic while T4S takes the long haul S gates. Security runs 20 to 30 minutes at peak, and the non Schengen passport queues add 20 to 45 more during the morning and evening waves. The Aena lounges admit you up to 4 hours before departure, no earlier, which matters if you planned to camp in one through a 9 hour wait.

Madrid itself is close enough to be tempting. The Cercanías C1 train from T4 reaches Chamartín in 19 minutes and Atocha in about 33 for around 2.60 euros; metro line 8 serves every terminal for roughly 4.50 to 5 euros including the airport supplement, after a one time 2.50 euro charge for the reloadable Multi card. The metro runs 6:05am to 2am at 6 to 8 minute intervals by day, stretching to 15 late at night, while the C1 only departs from T4, so travelers in the older complex ride the metro or the shuttle bus to reach it. With 5 to 6 hours between flights you can manage a meal in the center; under that, the math stops working once you add the return security queue. Wifi in the terminals is free and unlimited once you register an email.