Halloween often falls right in the middle of autumn trip season, and plenty of travellers fancy flying to their destination already dressed as a witch, vampire or Jedi. The TSA is fine with that — mostly. Costumes are welcome aboard US flights, as long as nothing about you confuses the machines or the agents, and a few very specific accessories are off-limits in the cabin.

The big one: face-altering makeup and masks. Airport identity checks rely partly on facial recognition scanners, and if your ghoulish face paint stops the system from matching you to your ID — and the officer can't verify you manually — you'll be asked to remove it on the spot, holding up yourself and everyone behind you. The simple fix is to pack the mask and any makeup and apply it after landing. Remember the 311 liquids rule: containers over 3.4 ounces (about 100ml) go in checked luggage, and Halloween makeup and face paint get no special exemption. Powdered makeup containers larger than 12 ounces must come out of your carry-on and sit in a separate bin at the X-ray.

Accessories are where things get detailed. Fake bones for your skeleton costume? Fine in the cabin. Body armour or a superhero cape? Those need to go in a bag for screening. Any fake weapon resembling the real thing — including toy swords — must be checked, though a lightsaber is somehow cabin-approved. When in doubt, the TSA's "What Can I Bring?" database covers an impressively specific range of items.

Experts offer a few extra pointers. Keith Jeffries, a former TSA federal security director, warns against costumes with metal, which interferes with screening equipment. Thomas Spagnola of travel tech company Fareportal adds that mock explosive devices — even as part of a joke costume — should be avoided entirely, including in checked bags, since they can trigger serious security responses. One popular workaround: wear a simple pajama-style costume with no metal and nothing covering your face, then go full spooky after you land.

The bottom line is easy to remember, and it echoes Jeffries' own advice: pack the costume, fly in comfort, and get dressed at your destination. It saves you queue headaches, keeps security moving, and means your elaborate vampire look arrives intact rather than half-removed at a checkpoint.