Somewhere in the line for the Athens checkpoint, a traveler holds a half-full bottle of water and wonders whether it will make it to the other side. The answer is no, if the bottle is bigger than the limit set for liquids at security. Finish it, pour it out or pack it in the checked bag, then buy a fresh one once you are through.
How does airport security work in Greece?
Security is a single checkpoint between the check-in hall and the gates, where your carry-on bag and your pockets are screened before you reach the departure area. If you have flown out of a large American airport, the rhythm will feel familiar: a belt, a tray, a scanner and a short moment of repacking on the far side.
What changes is the small print, and the small print is what trips people up. A few habits you built at TSA do not travel with you, and a few things you took for granted at home are done differently elsewhere in Europe. The sections that follow sort these out so that nothing at the tray table comes as a surprise.
The checkpoint at Athens
Athens International Airport Eleftherios Venizelos is the gateway for visitors, and all of its check-in desks sit in the Main Terminal. That means the sequence is simple to picture: you drop your bags at the desks, then follow the signs toward the security checkpoint and the gates beyond.
The airport has a second building, the satellite terminal, which is reached by an underground link. Passengers heading there are screened first and then travel through the tunnel, so the checkpoint is behind you by the time you ride it.
Aegean Airlines has its main base here, and Olympic Air uses the airport as a hub. Ryanair and Sky Express also operate from the airport, so the checkpoint serves a mix of airlines and ticket types.
What you do at the tray
As a habit, travelers place their bag on the belt, put pockets’ contents in a tray and walk through the scanner when the officer waves them forward. Anything that is not allowed through is set aside at the belt, and that is where most of the pauses happen. A bottle, a jar of honey or a tube of something creamy can all stop the line for a moment.
It helps to sort your carry-on at home, with the liquids you plan to bring in one spot you can reach quickly. Travelers keep a gift bought on an island, such as olive oil or a jar of preserves, in the checked bag for this reason.
What Americans leave behind at home
In the United States, the rule asking passengers to take off their shoes for screening was lifted in 2025. That is a change of American procedure, and travelers who have just got used to walking through in their sneakers should not assume every airport abroad has followed the same path. What remains the same is that the officers at the belt decide the procedure, so watch for their instructions.
Other American features also stay at home. Some U.S. airports created premium lines for First or Business Class passengers and elite frequent flyers, to ease long waits. And in the United States, people who are not flying need a gate pass to enter the secure area. Both are American arrangements, and neither tells you what you will find at a given checkpoint in Greece.
One more piece of background explains why screening feels so uniform at home. Under the Aviation and Transportation Security Act, all passenger screening in the United States had to be carried out by federal employees by November 19, 2002, and it is now provided by the Transportation Security Administration, the TSA.
What are the rules for liquids?
Liquids, water included, may not pass the security checkpoint in containers over 3.4 U.S. fluid ounces, which is 100 milliliters. A bottle larger than that is stopped at the belt, however little is left inside it.
Reading the limit at the belt
The limit applies to the size of the container, so a large bottle with a splash of water is still a large bottle. Think of what counts as a liquid in everyday terms: drinks, shampoo, sunscreen, toothpaste, creams, sauces and anything you can pour or spread.
A reusable water bottle is the easy case. Carry it empty through the checkpoint and fill it afterward, rather than watching a good bottle go into the bin. The same goes for coffee and tea in a travel mug, which you are better off finishing before you reach the belt.
Shopping for the flight home
Greece sends people home with bottles: ouzo, tsipouro, wine, olive oil, jars of thyme honey and sweets packed in syrup. Because of the checkpoint limit, anything in that group over the size allowed belongs in the checked bag, wrapped in clothes and zipped into the middle of the suitcase.
Small jars and tins are a different story, since they fall under the limit, but the rule is about the container, so a generous jar of honey is not a snack you can take through. Pastries, dried herbs, olives in a sealed pack and bars of olive oil soap are the kind of gifts that sidestep the question altogether.
How other airports handle liquids
The limit is not the same experience everywhere. At Schiphol Airport in the Netherlands, security staff have used CT scans on all passenger filters since early 2020, which lets passengers keep their liquids and electronics inside their bags. That is the case at Schiphol, not a general rule of European airports, and it says nothing about the checkpoint in Athens.
If you connect through such an airport on the way to or from Greece, the procedure there can differ from the one at your Greek departure. Treat each checkpoint as its own, and let the officers’ signs and instructions at that belt decide what comes out of the bag.
What should you know before you fly?
Before you fly out of Athens, know where the airport is, how the terminals are split and what to expect at the checkpoint. Athens International Airport stands in Spata, in Attica, and it began operation on 28 March 2001.
Where the airport sits
The airport is about 12 miles east of central Athens. Because of the hills in between, the road is longer, at 19 miles. That gap between the straight line and the road is why the airport feels farther than a map suggests.
It has two parallel runways, one of 13,123 feet and one of 12,467 feet, both asphalt. The current phase is built for 26 million passengers a year, with the final expansion planned for 50 million.
The two terminals
| Terminal | What it holds |
|---|---|
| Main Terminal | All 153 check-in desks |
| Satellite Terminal | Reached by an underground link, built for six million passengers a year |
That makes the Main Terminal the fixed starting point for every departure. If your flight leaves from the satellite building, you reach it by the underground link after security.
Why screening can feel different
Some travelers worry about the machines. A single backscatter scan exposes the person to between 0.05 and 0.1 microsievert of radiation, whereas a standard chest x-ray carries a dose almost 100 times higher. That comparison is about backscatter technology in general and is not a statement about which scanner stands in a given Greek airport.
Another small curiosity comes from a study at Helsinki-Vantaa airport during the 2015-2016 flu season, which found that the plastic trays used in screening can be a significant vector for respiratory viruses. It is a reason some travelers carry hand sanitizer or wash their hands after the belt, a habit that costs nothing.
On carry-on luggage, one old rule has gone. In the United Kingdom, from January 7, 2008, travelers are no longer limited to a single piece of carry-on luggage at most major airports. That is a British decision and does not describe what an airline in Greece will let you bring on board.
Good to know before you go
Greece uses the euro, and the airport is the last place where a forgotten bottle of water becomes a small purchase at the other side of the checkpoint. Keep the sunscreen and the olive oil in the checked bag, keep a refillable bottle empty until after the belt, and let the island souvenirs travel in the suitcase, wrapped in a sweater. The checkpoint rewards a tidy carry-on far more than it rewards a clever one.
Sources
- Wikipedia, Airport security (https://en.wikipedia.org/wiki/Airport_security), checked October 12, 2026
- Wikipedia, Athens International Airport (https://en.wikipedia.org/wiki/Athens_International_Airport), checked October 12, 2026