Can You Bring Vaseline on a Plane?

The Quick Answer

Yes, Vaseline is allowed on planes in both carry-on and checked bags. The catch: TSA classifies petroleum jelly as a liquid, so it follows the 3-1-1 rule in your carry-on. That means your container must be 3.4 ounces (100 ml) or smaller, and it goes in your quart-sized clear bag with your other liquids and gels.

This trips people up because Vaseline doesn't look or act like a liquid. It's thick, semi-solid, and doesn't pour. But TSA's definition of "liquid" includes gels, creams, pastes, and anything that isn't fully solid. Petroleum jelly falls squarely in that category.

Why TSA Considers Vaseline a Liquid

TSA uses a broad definition of liquids that covers anything that can spread, flow, or conform to its container. Vaseline checks all those boxes — you can scoop it, spread it, and it takes the shape of whatever you put it in. It's not a rigid solid like a bar of soap or a stick of deodorant.

Other items in this same category that surprise people:

• Peanut butter — liquid
• Hummus — liquid
• Cream cheese — liquid
• Mashed potatoes — liquid
• Yogurt — liquid

If you can spread it, TSA calls it a liquid. Vaseline fits right in.

Carry-On Rules

To bring Vaseline in your carry-on, follow the 3-1-1 rule:

• Container size: 3.4 ounces (100 ml) or less. The standard Vaseline jar is 1.75 ounces, which is fine. The 3.75-ounce jar is over the limit — leave that one at home or put it in checked luggage
• Clear bag: Put it in your one quart-sized, clear, resealable plastic bag
• One bag: One liquids bag per passenger

The container size matters, not how much product is in it. A half-empty 7.5-ounce jar of Vaseline is still too big for carry-on, even if there's only an ounce of product left inside. TSA goes by the container's labeled volume.

Best Carry-On Sizes

• Vaseline Original (1.75 oz jar): Perfect for carry-on
• Vaseline Lip Therapy (0.25 oz tube): Great and barely takes up space
• Vaseline travel squeeze tube (1 oz): Ideal
• Vaseline Original (3.75 oz jar): Too big for carry-on
• Vaseline Original (7.5 oz or larger): Checked bag only

Checked Bag Rules

No restrictions. You can pack any size Vaseline jar in your checked luggage. The big 13-ounce tub, the 7.5-ounce jar, the jumbo size — all fine. Pack as much as you need.

Vaseline won't leak like a liquid would, which is a nice advantage in checked bags. But if you're worried about the lid popping off due to pressure changes, put the jar inside a zip-lock bag just in case.

The Medical Exception

Here's something most travelers don't know: if you need Vaseline for medical purposes, it may be exempt from the 3-1-1 rule.

TSA allows medically necessary liquids, gels, and creams in reasonable quantities exceeding 3.4 ounces. If you use petroleum jelly to treat a skin condition (like eczema, psoriasis, or burn recovery), you can bring a larger container in your carry-on.

To use this exception:

• Declare it to the TSA officer at the beginning of the screening process
• Remove it from your bag and place it in a separate bin
• It will undergo additional screening (might be swabbed or visually inspected)
• Having a doctor's note or prescription label helps but isn't strictly required

TSA officers have discretion here, so having documentation from your doctor strengthens your case if you're bringing a larger container for medical reasons.

What Vaseline Is Great for on Flights

Vaseline is actually one of the most versatile travel products you can bring. The dry, pressurized cabin air can wreak havoc on your skin, and petroleum jelly helps in several ways:

• Lips: Cabin humidity drops to around 10-20%. A thin layer of Vaseline prevents painful cracking
• Nostrils: A tiny dab inside each nostril keeps nasal passages moisturized, which some doctors say can help your body filter airborne germs
• Cuticles and hands: Dry cabin air hits your hands fast. Vaseline locks moisture in
• Under eyes: Prevents the delicate under-eye skin from drying out during long flights
• Chafing: Long flights mean a lot of sitting. Vaseline on chafe-prone areas helps during extended travel days
• Shoe blisters: Exploring a new city on foot? Apply Vaseline to hotspots before they become blisters

For this reason, many frequent flyers consider Vaseline their single most useful toiletry item for flights.

Alternatives That Aren't "Liquids"

If your quart-sized bag is already packed and you don't want Vaseline taking up precious space, consider these alternatives that TSA doesn't classify as liquids:

• Vaseline Lip Therapy stick: The twist-up stick format is a solid, not a liquid. It doesn't need to go in your liquids bag
• Solid moisturizer bars: Brands like Ethique make solid lotion bars that work similarly to Vaseline but in a solid stick format
• Solid balm sticks: Several brands sell petroleum jelly or multi-purpose balm in a twist-up stick, which is treated as a solid by TSA

The rule of thumb: if it's in a twist-up stick format (like deodorant), TSA treats it as a solid. If it's in a jar or squeeze tube, it's a liquid/gel.

Vaseline vs. Other Petroleum Jelly Brands

TSA rules apply to the product, not the brand. Whether you're bringing Vaseline, Aquaphor, CeraVe Healing Ointment, or generic petroleum jelly, the rules are identical:

• Aquaphor: Same rules as Vaseline. 3.4 oz or less in carry-on
• A&D Ointment: Same rules. It's a gel/ointment
• CeraVe Healing Ointment: Same rules
• Generic petroleum jelly: Same rules

All petroleum-based ointments and jelly products fall under the liquid/gel classification regardless of brand.

International Travel

The 100 ml carry-on limit for liquids is an international standard, not just a U.S. rule. Whether you're departing from London, Dubai, Tokyo, or Sydney, the same basic rule applies: containers must be 100 ml or less in carry-on, packed in a clear resealable bag.

Some airports with newer CT scanner technology are relaxing the liquids bag requirement — passengers at certain European airports no longer need to remove their liquids bag for screening. But the 100 ml per container limit still applies everywhere until further notice.

Vaseline is available worldwide, so if you don't want to deal with carry-on restrictions, you can always buy a small jar at your destination.

Common Mistakes

A few things that catch travelers off guard with Vaseline at security:

• Bringing the big jar. The most common mistake. The 3.75-ounce and 7.5-ounce jars are over the carry-on limit. Buy the 1.75-ounce travel size
• Not putting it in the liquids bag. Since Vaseline feels solid, people leave it in their toiletry kit instead of the clear liquids bag. TSA will flag it
• Forgetting the container rule. A 7-ounce jar that's mostly empty is still a 7-ounce container. The container size printed on the label is what matters
• Decanting into an unlabeled container. This is actually fine — TSA doesn't require labels on personal toiletries. Scoop some Vaseline into a small travel container and you're good to go

The Bottom Line

Vaseline is plane-friendly, but TSA treats it as a liquid. Grab the 1.75-ounce travel jar for your carry-on liquids bag, or scoop some into a small reusable container. For checked bags, bring whatever size you want. And if you need it for a medical condition, you can bring a larger amount in carry-on — just declare it at the checkpoint.