Baby Items in Carry-On: What Airlines Allow (2026 Guide)

Flying with an infant or toddler involves more kit than almost any other type of travel. The good news: aviation rules are generally accommodating for parents — formula is exempt from liquid rules, strollers gate-check free, and most airlines provide genuine flexibility. The challenge is knowing which rules apply before you reach the security lane with a crying baby and a bag of pureed carrots.

Formula and Breast Milk: The 3-1-1 Exemption

The single most important rule for parents at security is the exemption of infant nutrition from the standard 100ml liquid rule.

TSA Policy (United States)

TSA explicitly exempts the following from the 3-1-1 liquid rule:

• Breast milk
• Formula (ready-made liquid and powder reconstituted)
• Toddler drinks (milk, juice)
• Baby food (purees, yoghurt pouches, fruit pouches)

Quantities: TSA allows "reasonable quantities" — in practice, this means as much as you need for the trip, not just 100ml. Bringing two days' worth of breast milk for a long international trip is entirely within the rules.

What you must do:

1. Declare breast milk and formula to the security officer before the bag goes through the X-ray
2. Remove these items from your bag and place them in a separate bin
3. Allow officers to test the liquid with an Explosive Trace Detection device or liquid scanner — this is normal and the items will be returned

What you do NOT need to do:

• Open sealed containers (though officers may ask, and you can consent or request alternative screening)
• Have the baby present — you can carry breast milk without your infant

EU Airport Rules

EU airports do not have an identical written exemption to TSA's, but in practice, formula, breast milk, and baby food are accepted at quantities above 100ml when clearly identified as infant nutrition and when traveling with a child. EU airports generally follow a "reasonable traveler" approach for infant items.

For certainty on specific European airports, check the airport authority's website — most publish explicit guidance permitting baby formula.

Ice Packs for Breast Milk

Ice packs, gel packs, and frozen items used to keep breast milk cool are permitted through security. If they are partially melted (slushy), they are treated as liquids — if fully frozen solid, they pass freely. Carry breast milk in insulated bags with ice packs frozen solid before the checkpoint.

Baby Food and Snacks

Beyond formula and purees, parents commonly travel with:

Solid foods (no restrictions):

• Baby crackers, puffs, rice cakes
• Banana, cut fruit (may attract customs attention at destination)
• Pre-packed sealed snack pouches (solid content)

Liquids and semi-liquids (exempt under TSA infant exemption):

• Pureed food in pouches or jars
• Yoghurt pouches
• Smoothie pouches for toddlers

The exemption applies to food for consumption during the journey — bringing commercially manufactured baby food for use on a trip lasting several days is within the spirit of the rules.

Strollers: Gate Check Policies

A stroller is the most practical item for parents at the airport, and the good news is that airlines treat strollers as free accessory items rather than baggage.

Gate Checking a Stroller

Gate checking means you use the stroller from check-in, through the terminal, right up to the aircraft door. At the gate:

1. A tag is attached to the stroller by gate staff
2. The stroller is collapsed and placed in the hold
3. At your destination, the stroller is returned at the aircraft door (not baggage claim) on most airlines

This service is free on all major airlines — it does not count as checked baggage. Some airlines will offer you the option to check the stroller at the check-in desk instead, which means it goes to baggage claim at the other end.

Which Strollers Gate-Check Well

Lightweight umbrella strollers and compact folding pushchairs gate-check very easily and come back quickly. Large travel systems with car seat adapters also gate-check, but take longer to collapse and may need to be cleared of attachments.

Protect your stroller in the hold: Gate-checked strollers go through the cargo handling process quickly and with less protection than checked baggage. Use a stroller bag or garbage bags to protect from dirt and scratches. Remove detachable accessories.

Strollers in the Cabin

A stroller cannot be brought into the aircraft cabin — it must be gate-checked. The exception is extremely compact strollers that fold to personal item size, which some airlines allow under-seat.

Car Seats on Planes

FAA-Approved Car Seats in Aircraft Seats

The FAA allows parents to use approved child restraint systems in aircraft seats if:

• The seat is FAA-approved (check for the label reading "This restraint is certified for use in motor vehicles and aircraft")
• The child weighs less than 18 kg (40 lbs) — the limit for most forward-facing aircraft-installed car seats
• The car seat fits within the aircraft seat with armrests down

You must purchase a seat for the child to use a car seat — a lap infant ticket (infant-in-arms) does not entitle you to use a car seat.

Airline Car Seat Policies

Most major airlines permit FAA-approved car seats. European airlines follow EU regulations that similarly allow car seats meeting certain standards. Always confirm with your airline before travel, particularly on narrow-body aircraft where seat width can make some car seats difficult to fit.

Checking a Car Seat

If you are not using the car seat in the aircraft seat, it can be checked as luggage, usually free of charge (alongside the stroller allowance). Use a protective bag to prevent damage. Do not check a car seat without some protection — car seats are fragile.

Infant Seat Requirements and Lap Infants

Children under 2 years old can typically fly as "lap infants" on one adult's lap, with a reduced-price or free ticket. The rules:

• Most airlines permit one lap infant per adult
• The infant must be under 2 years at travel date (or at return travel date — check airline policy)
• On some airlines, a seatbelt extension for lap infants is provided by the crew
• Bassinets (sky cots) are available on some long-haul flights — request in advance, they are allocated to bulkhead rows

Nappies and Diapers in Carry-On

There is no restriction on the number of nappies in carry-on. Pack what you need plus extras. Baby wipes are not subject to liquid rules.

Nappy cream and lotions: Standard tube sizes under 100ml can go in your liquids bag. Larger tubes must be checked. Consider buying travel-size nappy cream for the flight.

Tips for Flying With Infants and Toddlers

Book Bulkhead or Bassinet Seats in Advance

On long-haul flights, bulkhead seats offer the most space for a travel cot/bassinet and allow the baby to lie flat without you holding them for the entire flight. Request these when booking — they are limited and fill early.

Time Flights Around Sleep Schedules

If possible, book night flights for long journeys. An infant who sleeps through the night at home will often sleep through a night flight. This is not always controllable, but worth considering when choosing departure times.

Nurse or Use a Pacifier During Takeoff and Landing

The pressure changes during ascent and descent can cause ear pain in infants. Nursing, bottle feeding, or using a pacifier during these phases encourages swallowing, which helps equalize ear pressure.

Pack Entertainment Strategically

For toddlers (1–3 years), pack familiar toys rather than new ones. Familiar objects are more reliably comforting. For longer flights, a tablet loaded with downloaded content works well for 2+ year olds.

Use the Priority Family Boarding

Most airlines offer families with young children priority boarding — take advantage of this. Settling a baby in a seat, stowing the diaper bag, and getting organized takes time. Boarding early reduces stress significantly.

Bring a Change of Clothes (for You)

Experienced traveling parents know: always pack a spare outfit for yourself, not just for the baby. In-flight messes are common and unpredictable.

What to Pack in the Diaper Bag Carry-On

A practical list for a short-to-medium haul flight:

• Diapers: flight duration + 2 hours buffer (a 3-hour flight — bring 5–6)
• Baby wipes (no restriction — bring plenty)
• Nappy cream in travel size (under 100ml)
• Change of clothes: two outfits for baby, one for you
• Formula or breast milk for the journey (any quantity — declare at security)
• Burp cloths or muslin squares
• Pacifier in case
• Small familiar toys
• Snack pouches for older babies
• Hand sanitizer (under 100ml — goes in liquids bag)
• Any prescribed medication

The Bottom Line

Formula, breast milk, and baby food are exempt from the 100ml liquid rule at TSA and broadly accepted at EU airports — declare them at security and allow testing. Strollers gate-check free at the aircraft door on virtually all airlines. Car seats can be used in aircraft seats with a purchased ticket. The diaper bag is your carry-on, and it will not count against your allowance if packed as your personal item. Prepare for security to take longer than usual and plan for it.