Utility Knife
Utility knives are not allowed in carry-on and must be packed in checked baggage.
Carry-on
Not allowed
Checked
Allowed
Carry-on details
Not allowed. Utility knives — including retractable box-cutter style blades — are prohibited in carry-on baggage, regardless of blade length or whether the blade is extended or retracted.
Checked-bag details
Allowed. Utility knives can be packed in checked baggage without restriction.
Special instructions
Retract the blade fully and cover it, or pack the knife in its original case, to protect baggage handlers during screening.
Related rules
FAQ
- Does it matter if the utility knife's blade is retracted?
- No — TSA prohibits utility knives in carry-on whether the blade is extended or fully retracted. Pack it in checked baggage instead.
- Can I bring spare utility knife blades in carry-on?
- No — loose replacement blades are sharp objects and should be packed in checked baggage along with the knife, securely wrapped.
Related items
Source: TSA — What Can I Bring? · Last verified: 2026-07-30
Final decision rests with the security officer at the checkpoint.