Can you bring unopened water on a plane? Yes, you can bring unopened water on a plane, but there are a few important considerations to keep in mind regarding airport security regulations and airline policies. TSA Regulations: The Transportation Security Administration (TSA) in the United States allows passengers to bring unopened water bottles through the security checkpoint, provided they meet certain criteria. The container must be sealed and unopened, and the volume should not exceed 3.4 ounces (100 milliliters) per container. These containers must be placed in a clear, quart-sized plastic bag and presented separately for screening. For More : https://justtravo.com/blog/can-you-bring-unopened-water-on-a-plane/