What Size Travel Bottles are Allowed on Airplanes?

What Size Travel Bottles are Allowed on Airplanes?

Timothy GillJuly 06, 2025

When it comes to packing for a flight, knowing the rules and regulations regarding liquids is crucial. One common question that travelers often have is: what size travel bottles are allowed on airplanes? Let's dive into the details to ensure a smooth and hassle-free journey.

On commercial flights, the TSA allows travel-sized containers of liquids, aerosols, gels, creams, and pastes in carry-on luggage, with each container limited to 3.4 ounces (100 milliliters) or less. These containers must fit into a single, clear, quart-sized (or one-liter) zip-top bag. 

What is the 3-1-1 rule?

The Transportation Security Administration (TSA) enforces the 3-1-1 rule for carry-on luggage. This rule states that each passenger is allowed to bring a quart-sized bag of liquids, aerosols, gels, gillette travel shave creams, and pastes in containers that are 3.4 ounces (100 milliliters) or less per item. The quart-sized bag should be clear and resealable.

What sizes are allowed for travel bottles?

Travel bottles that are 3.4 ounces (100 milliliters) or less are considered acceptable for carry-on luggage. It's important to note that the size limit applies to each individual container. If you have a larger bottle that is only partially filled, it must still meet the 3.4-ounce requirement.