Current Liquid Rules at Spanish Airports in 2026
The standard 100ml liquid restriction remains in full effect across all commercial airports in Spain operated by AENA (Aeropuertos Españoles y Navegación Aérea). Passengers departing from or transferring through security checkpoints at Madrid-Barajas (MAD), Barcelona-El Prat (BCN), Málaga-Costa del Sol (AGP), Palma de Mallorca (PMI), Alicante-Elche (ALC), and all regional Spanish airports must pack liquids, gels, pastes, lotions, and aerosols in containers of 100ml (3.4 fluid ounces) or less.
All individual liquid containers must fit comfortably inside a single, transparent, resealable plastic bag with a maximum capacity of 1 litre (approximately 20cm by 20cm). Each passenger is legally permitted only one clear liquid bag at the security screening checkpoint.
Status of AENA 3D C3 Scanners and the EU 100ml Cap
AENA has deployed advanced Computed Tomography (EDSCB C3 standard) 3D baggage scanners at dedicated security lanes in Madrid-Barajas Terminal 4 and Barcelona-El Prat Terminal 1. These 3D scanners generate high-resolution volumetric images that allow security operators to inspect bag contents without requiring passengers to unpack electronic devices.
However, following European Commission regulatory harmonization, the universal 100ml container cap remains mandatory across all European Union airports pending technical standardization of screening algorithms. As a result, even when directed through a modern 3D scanner lane in Spain, individual liquid containers must not exceed 100ml. The primary passenger advantage at C3-equipped lanes is that compliant 1-litre liquid bags and electronic equipment (laptops and tablets) can remain inside hand luggage during scanning.
Spanish Airport Security Screening Comparison
| Checkpoint Type | Container Size Limit | Liquids Out of Bag? | Laptops Out of Bag? | Active Locations in Spain |
|---|---|---|---|---|
| Standard 2D Security Lanes | Max 100ml per container (1L clear bag total) | Yes — placed in separate tray | Yes — placed in separate tray | All AENA airports and standard terminal lanes |
| Advanced 3D (C3) Scanner Lanes | Max 100ml per container (1L clear bag total) | No — remain inside hand luggage | No — remain inside hand luggage | Selected lanes at Madrid T4 and Barcelona T1 |
Authorized Exceptions to the 100ml Restriction
- Prescription Liquid Medications: Liquid, aerosol, or gel medications required for the duration of the flight are permitted in containers exceeding 100ml. Passengers should carry a doctor’s prescription or medical certificate in English or Spanish matching the name on the boarding pass.
- Baby Food and Milk: Essential liquid food, sterilized water, and baby milk for infants travelling on the booking are exempt from the 100ml limit, subject to separate physical verification at the checkpoint.
- Airport Duty-Free Purchases: Liquids purchased at airport airside retail stores or on connecting flights must be sealed inside an official Security Tamper-Evident Bag (STEB) with the itemized receipt visibly displayed inside.
Airport Transit and Travel Coordination in Spain
For international passengers arriving in Spain from outside the Schengen Area, border processing operates under automated biometric entry rules detailed in our EES and ETIAS Spain Guide. If you are continuing your journey across Spain by rail rather than domestic flights, high-speed operators enforce separate baggage screening protocols detailed in our Spain Train Travel Guide.
Major international gateway hubs including Madrid, Barcelona, and Málaga feature direct rail and metro links connecting airport terminals with city centers.