The answer turns on one question, which is whether your connection forces you through immigration. Why separate tickets change everything, how the main regions differ, the transit schemes that work in your favour, and the assumption that gets travellers refused boarding before they leave home.
Two of the biggest time costs at US checkpoints disappeared in 2025 and 2026, and most travellers still queue as though nothing changed. Twelve things that actually save time, ordered by how many minutes each is worth, plus the identity rules that can now stop you at the door.
Efficient packing is a planning problem before it is a technique problem. A five step method covering how much to remove, why two colours beat eight outfits, when rolling actually helps and when it creases a shirt, where weight belongs in the case, and what packing cubes really do.
Jewelry is not on any mandatory removal list, yet heavy chains and costume pieces still trigger metal detectors while fine gold passes unnoticed. What alarms and what does not, how body scanners differ, why valuables must never go in checked baggage and where jewelry actually gets lost.
Nail clippers are permitted in carry-on and checked baggage, yet manicure sets still get pulled at screening. A look at the 4 inch scissor blade rule, which grooming tools clear the checkpoint, how the rules differ outside the United States, and how to pack so your bag is not searched.
The power source decides the rules for styling tools in the air. Corded irons travel freely, cordless butane models are cabin only with a safety cover and a one per passenger limit, and spare gas cartridges are banned from every bag after the 2025 regulation change.
The word safety misleads more travellers than any other in the grooming aisle. Disposable and cartridge razors clear the checkpoint freely, a safety razor handle only travels with the blade out, and straight razors belong in the hold. Plus what to do about shaving cream and the quart bag.
Makeup is screened in three groups rather than one, and most confiscations happen because a product sits in a category its owner did not expect. A breakdown of which cosmetics count as liquids, the 12 ounce powder threshold, aerosol limits and what belongs in the hold.
Sunscreen is among the most confiscated items at security, almost always because a full size bottle went into the cabin bag. Which forms follow the liquids rule and which sit outside it, the FAA limits that apply in the hold, and whether buying at the destination is the better answer.
Shoulders and knees covered is the whole rule in Rome's churches, and it applies to men, women and children alike. Where it is enforced hardest, what happens if you get it wrong at a timed entry slot, and the one outfit that gets you into everything.
