There are restrictions on liquids that can be brought on board the aircraft(for international flights). For international flights, all liquids stored in containers with a capacity exceeding 100 ml(g) are prohibited from being brought onto the aircraft.

For the vast majority of international flights, you are still required to remove your liquids from your carry-on bag for separate X-ray screening. This follows the global "3-1-1" rule, which dictates that all liquids, gels, and aerosols must be in containers of 3.4 ounces (100ml) or less, and all containers must fit into a single, clear, quart-sized (one-liter) resealable plastic bag. However, this is currently a "transitional" era in aviation security. Many major international hubs, such as London Heathrow, Tokyo Haneda, and several airports in the United States and Europe, have begun installing advanced CT (Computed Tomography) scanners. These high-tech machines create a 3D image of the bag's contents, allowing security officers to see through liquids and electronics more clearly. At checkpoints equipped with these specific scanners, you are often told to leave your liquids and laptops inside your bag. Because the rollout of this technology is inconsistent across the globe, the safest "pro-traveler" advice is to always have your liquids bagged and ready to be removed unless a security officer explicitly tells you otherwise, as rules can change from one terminal to the next.