What is the EU liquid rule for carry-on bags?

Each liquid container must be 100 ml or less and all containers must fit in one clear resealable 1-litre bag, one bag per passenger.

Which European airports have relaxed liquid rules due to CT scanners?

CDG (Paris), AMS (Amsterdam), MAD (Madrid), and FCO (Rome) have CT scanner lanes at select checkpoints where the 100 ml rule no longer applies — check signage on the day.

Does Ryanair require Priority Boarding to bring a cabin bag into the cabin?

Yes. Without Priority Boarding, only a small personal item (40x20x25 cm) is allowed in the cabin for free. The larger cabin bag must go in the hold at the gate.

Are there liquid restrictions on Eurostar?

No. Eurostar follows British and French rail rules, not aviation liquid restrictions. You can carry full-size liquids on Eurostar without the 100 ml rule applying.

What is the difference between Schengen and non-Schengen security in European airports?

Non-Schengen departures (including UK, Ireland, and international flights) pass through passport control in addition to security screening. Schengen-zone internal flights skip passport control but still go through the same security screening.

European Carry-On Restrictions in 2026: What's Changed

European carry-on rules in 2026 are in a period of genuine transition. CT scanner technology is quietly changing what gets confiscated at the checkpoint, while budget airline bag policies are tightening in ways that catch travelers off guard. Here is the complete picture.

The EU Liquid Rule: Still 100 ml, With Exceptions

The baseline liquid rule across EU airports remains unchanged: each container must hold 100 ml or less, all containers must fit in a single transparent resealable bag with a capacity of 1 litre, and each passenger is limited to one such bag. This rule applies to all passengers departing from EU airports regardless of destination.

What counts as a liquid is broad: anything that flows, sprays, or is gel-like. That includes perfume, shampoo, conditioner, toothpaste, sunscreen, mascara, lip gloss, and any cream or paste. Solid alternatives — shampoo bars, solid deodorant, toothpaste tablets — bypass the rule entirely.

CT Scanner Rollout: Where Liquids Are Now Allowed

The most significant change at major EU airports is the ongoing installation of C3 (Computed Tomography) scanners, the same technology that allows TSA PreCheck members in the US to leave laptops and liquids in bags. When a CT scanner checkpoint is in use, security officers can see a three-dimensional image of bag contents and no longer need passengers to unpack liquids or electronics.

Where CT scanners are now in use (select lanes, 2026):

CDG (Paris Charles de Gaulle) — Terminals 2E and 2F have CT-equipped lanes. Signage marks them clearly. The 100 ml restriction is waived at these checkpoints.
AMS (Amsterdam Schiphol) — Lanes E and F piers have CT scanners. Schiphol has been one of the fastest European adopters.
MAD (Madrid Barajas) — Terminal 4 (Iberia hub) lanes, with rollout continuing to T4S.
FCO (Rome Fiumicino) — Terminal 3 Schengen gates have CT units. Non-Schengen gates still use older equipment.

Key caveat: CT lanes coexist with standard lanes at all of these airports. If you end up in a standard lane, the 100 ml rule still applies. Look for the CT scanner signage when you join the queue and switch lanes if needed. Do not assume the relaxed rule applies everywhere on the day of travel.

Ryanair and Wizz Air: Priority Boarding Requirement for Cabin Bags

Both Ryanair and Wizz Air use a two-tier carry-on system that catches many travelers by surprise.

Ryanair:

Small personal bag (40x20x25 cm): free, must fit under the seat in front
Priority cabin bag (55x40x20 cm, up to 10 kg): requires purchasing Priority Boarding or Plus/Flexi fares
Without priority, the cabin bag is checked at the gate for free — but you lose it until baggage reclaim

Wizz Air:

Small cabin bag (40x30x20 cm): free, under-seat only
Large cabin bag (55x40x23 cm): requires Plus bundle or WIZZ Priority
Without priority, larger bags are checked at the gate; checked bag fees apply

The effective cost of adding a cabin bag at booking ranges from roughly €8–€22 per flight through bundle upgrades. Added at the gate or online close to departure, the same capability costs substantially more. Book the bundle at checkout if you plan to travel with overhead-bin luggage.

Budget Airline Bag Fee Comparison: Europe

Airline	Free personal item	Cabin bag (overhead)	At gate
Ryanair	40x20x25 cm	From ~€8 with Priority	Free gate check
Wizz Air	40x30x20 cm	From ~€9 with WIZZ Priority	Fee applies
easyJet	45x36x20 cm (underseat)	From ~€13 add-on	Fee applies
Vueling	40x30x20 cm	Included on Plus fares	Fee applies

Fares and dimensions change regularly — verify on each airline's website before booking.

Schengen vs Non-Schengen Security

The Schengen Area covers 27 European countries that share open internal borders. Security screening works the same way in both zones — same liquid rules, same electronics rules — but the airport routing differs.

Non-Schengen departures (flights to the UK, Ireland, USA, and non-EU countries) require passport control in addition to security. Budget extra time for these gates. At airports like CDG, AMS, and FRA, non-Schengen piers can involve longer walks and separate queues.

Schengen-internal flights (Germany to Spain, Italy to France, etc.) skip passport control entirely. Security is the same checkpoint you'd use for any departure.

Eurostar: A Different World

Eurostar — the high-speed train connecting London St Pancras to Paris Gare du Nord, Brussels-Midi, and Amsterdam Centraal — is not governed by aviation regulations. There is no 100 ml liquid rule. You can carry full-size shampoo, full bottles of wine, or any quantity of liquid without restriction.

Eurostar does operate passport control at departure (both UK Border Force outbound from London, and French/Schengen police outbound from Paris), but security screening is standard rail-style scanning with no liquid extraction required.

For travel between London and Paris or Brussels, Eurostar eliminates one of the most frustrating carry-on constraints of air travel entirely.