Navigating the Clouds: Understanding the 3:1:1 Rule for JetBlue (2026)

Whether you're flying to San Juan or Syracuse, packing your toiletries for a JetBlue flight follows the same golden rule as every other airline in the U.S.: the TSA 3-1-1 Rule.

Even as airport technology advances in 2026, these regulations remain the standard for keeping security lines moving. Here is the simple breakdown of the 3-1-1 Rule for JetBlue.

🧼 The 3-1-1 Breakdown

The name is actually a mnemonic device to help you remember three specific requirements:

• 3: 3.4 Ounces (100ml) or Less
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• Every liquid, gel, aerosol, cream, or paste must be in a container that is 3.4 ounces or smaller.
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• Crucial Tip: TSA looks at the bottle size, not how much is left inside. A half-empty 6oz bottle of shampoo will still be confiscated.
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• 1: 1 Quart-Sized Bag
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• All your travel-sized containers must fit comfortably into one clear, quart-sized, resealable plastic bag.
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• 1: 1 Bag Per Passenger
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• Each traveler is allowed only one liquids bag in their carry-on.
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🧴 What Counts as a "Liquid"?

Many travelers get caught at security because they don't realize how broad the "liquid" definition is. On JetBlue, the rule applies to:

• Toiletries: Toothpaste, mouthwash, hair gel, and spray deodorant.
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• Food: Peanut butter, yogurt, honey, or jams.
• Cosmetics: Liquid foundation, mascara, and lip gloss.
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• Aerosols: Hairspray or dry shampoo.
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🍼 The Important Exceptions

You don't have to cram everything into that tiny quart bag. Certain items are exempt from the 3.4oz limit:

1. Medications: Liquid, gel, or aerosol prescriptions (and even some over-the-counter items like saline solution) are allowed in larger quantities.
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3. Baby Essentials: Breast milk, formula, and baby food are permitted in "reasonable quantities" for the duration of your trip.
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5. Duty-Free Liquids: If you’re flying internationally into the U.S. and have a connecting JetBlue flight, duty-free liquids over 3.4oz are allowed if they are in a secure, tamper-evident bag with the receipt.
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Note: You must declare these exempt items to the TSA officer at the beginning of the screening process.

💡 JetBlue Pro-Tips for 2026

• Check Your Fare: If you are flying Blue Basic, remember that a carry-on bag is often not included (unless you're flying to certain international destinations). If you only have a "personal item," your 3-1-1 bag still has to fit inside it.
• Accessibility: Keep your quart-sized bag in an outside pocket of your luggage. Unless you have TSA PreCheck, you will need to pull this bag out and place it in a bin for screening.
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• When in Doubt, Check it: If you have a full-sized bottle of expensive cologne or a specialty bottle of wine, pack it in your checked luggage. There is no 3.4oz limit for checked bags (though alcohol has its own proof limits).
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Are you traveling with just a carry-on for this trip, or are you planning to check a bag to bring back some souvenirs?