Energy Drinks
Energy drinks follow the standard liquids rule — 3.4 oz or less in carry-on, unlimited in checked bags.
Carry-on
Allowed with conditions
Checked
Allowed
Carry-on details
Allowed with conditions. Energy drinks are liquids — in carry-on, each container must be 3.4 oz (100 mL) or less and fit in your quart-size bag, whether it's sealed or already open. A full-size can or bottle (8-16 oz) won't pass security; finish it, toss it, or pack it in checked baggage before you reach the checkpoint. You can buy a full-size drink and bring it on board once you're past security.
Checked-bag details
Allowed. No size restriction in checked baggage — pack full-size cans or bottles here instead.
Quantity limit
3.4 oz (per container)
Special instructions
An empty container is always fine to carry through — you can fill it at a water fountain or shop after the checkpoint.
Related rules
FAQ
- Can I bring an unopened can of energy drink through security?
- No — being sealed doesn't matter, only size does. A full-size can (8-16 oz) exceeds the 3.4 oz carry-on limit regardless of whether it's opened. Pack it in checked baggage or buy one after security instead.
Related items
Source: TSA — What Can I Bring? · Last verified: 2026-07-30
Final decision rests with the security officer at the checkpoint.