Yes, you can take tea and coffee on a plane, but the rules vary depending on whether the items are dry or liquid. Dry tea bags, loose-leaf tea, and coffee grounds or beans are considered solid food items and are perfectly acceptable in both carry-on and checked luggage without any quantity limits for personal use. However, if you are bringing brewed tea or coffee, it must comply with the 3-1-1 liquids rule for security checkpoints: the container must be 3.4 ounces (100ml) or less and fit in your single quart-sized clear bag. Most passengers find it easier to bring an empty reusable tumbler through security and fill it with hot water or coffee at an airport café afterward. If traveling internationally in 2026, be sure to keep tea and coffee in their original packaging if possible; while they are generally admissible, you should still declare them on customs forms to avoid any issues with agricultural inspections, as some countries have strict rules about unsealed plant products.