The Fastest Way Through Airport Security

The single biggest time cost at security is digging. If your laptop is under three layers of clothing and your liquids are in a side pocket you have to unzip, you have already lost two minutes before the tray moves.

• Keep the laptop and tablet in an outer sleeve you can reach without opening the main compartment.
• Keep the liquids bag in a top or front pocket, already sealed and already the right size.
• Empty all pockets into the bag before you join the queue, not at the tray table.
• Put your phone, keys, coins and boarding pass in one small pouch inside the bag so you are not handling loose items.
• Remove any power bank and keep it accessible, since many airports require batteries to be screened separately.
• Wear slip-on shoes and a belt without a large metal buckle where local rules require removal.

The 100 ml liquid limit has been standard for years, but next generation CT scanners are gradually removing the need to separate liquids and laptops. Rollout is uneven, so the safest approach is to pack as though the old rules apply and enjoy it when they do not.

• Medication and baby formula are generally exempt from the volume limit but must be declared and may be tested.
• Spare lithium batteries and power banks must travel in cabin baggage, never in the hold.
• Duty free liquids bought airside need the sealed tamper-evident bag and the receipt if you pass through another screening point.
• Food items such as yoghurt, soft cheese and sauces count as liquids, which surprises people at breakfast.

Queue length is a poor predictor of queue speed. What matters is how many trays each person in front of you will generate and how quickly they will clear the belt.

• Avoid lanes with families carrying pushchairs, which need separate handling and a manual check.
• Avoid large tour groups, since one slow traveler stalls the whole line behind them.
• Prefer lanes with visible business travelers carrying a single cabin bag and no coat.
• Prefer lanes closest to the far ends of the hall, which are consistently less used than the central ones people walk into first.
• Look at the number of open X-ray machines rather than the number of people, since two machines feeding one lane moves twice as fast.

Security load follows the departure schedule, and departure schedules cluster. Most airports have two or three sharp peaks a day, and the difference between arriving inside one and outside it is larger than any packing improvement.

• Many large airports publish live or forecast security wait times on their website or app, and these are generally accurate within ten minutes.
• Some airports offer free time-slot reservation for security, including Amsterdam Schiphol and several German airports.
• Monday mornings and Friday evenings are consistently the worst weekday slots at business-heavy airports.
• School holiday periods shift the peak later in the morning and broaden it considerably.

If you fly more than three or four times a year, one of these usually pays for itself in the first trip, mostly by removing variance rather than by saving a fixed number of minutes.

• TSA PreCheck in the United States keeps shoes, belts, laptops and liquids in place and typically cuts the queue to under five minutes.
• Global Entry includes PreCheck and speeds arrival into the United States, which is the more valuable half for international travelers.
• Registered Traveller in the United Kingdom speeds the border rather than security, but it removes the longer of the two queues.
• Fast track lanes sold by individual airports cost a few euros and are worth it at known bottlenecks such as Lisbon or Palma in summer.
• Airline status and premium cabin tickets usually include a fast track lane, which is often the single most useful part of the benefit.

1. Arriving at the belt and only then starting to unpack, which is the single largest avoidable delay in the whole process.
2. Leaving a half-full water bottle in a side pocket, which triggers a manual bag search and adds five to ten minutes.
3. Forgetting a power bank at the bottom of a bag, another reliable cause of a secondary check.
4. Wearing a heavy jacket with full pockets, then emptying it item by item into a tray.
5. Choosing the shortest queue without looking at how many loading positions it has.
6. Packing gifts and unusual shaped items in the middle of a dense bag, which produces an unreadable X-ray image and a manual inspection.