Humidifier
Portable humidifiers are allowed in carry-on and checked bags, as long as the water tank is empty.
Carry-on
Allowed
Checked
Allowed
Carry-on details
Allowed. A portable humidifier is a small electronic appliance with no restriction. The water tank should be empty before you pack it — an empty tank has no liquid to declare and avoids leaks.
Checked-bag details
Allowed. No restriction in checked baggage; empty the water tank first for the same reason.
Special instructions
Let it dry out fully and empty the reservoir before packing, whether in carry-on or checked.
FAQ
- Do I need to empty a humidifier's water tank before flying?
- Yes — empty the reservoir before packing. An empty tank avoids leaks and means there's no liquid to worry about at security.
Related items
Source: TSA — What Can I Bring? · Last verified: 2026-08-02
Final decision rests with the security officer at the checkpoint.