Is there a length limit on extension cords for flights?

No. TSA does not impose a length or quantity limit on extension cords in carry-on or checked bags.

Should I pack my extension cord in carry-on or checked luggage?

Either works. Carry-on is handy if you'll want to use it in the airport or on arrival; otherwise it travels fine in checked luggage.

Extension cords are allowed in both carry-on and checked bags with no length or quantity limit.

Carry-on

Allowed

Checked

Allowed

Allowed. A standard extension cord has no battery and no sharp components, so it passes through security screening without restriction.

Allowed. Extension cords can go in either carry-on or checked bags — pack it wherever is more convenient.

Coil the cord loosely rather than balling it up tightly — a dense tangle of wire can look ambiguous on an X-ray and prompt a manual bag check.

Is there a length limit on extension cords for flights?: No. TSA does not impose a length or quantity limit on extension cords in carry-on or checked bags.
Should I pack my extension cord in carry-on or checked luggage?: Either works. Carry-on is handy if you'll want to use it in the airport or on arrival; otherwise it travels fine in checked luggage.

Source: TSA — What Can I Bring? · Last verified: 2026-07-31

Final decision rests with the security officer at the checkpoint.