Flying With a Baby

Flying with a baby adds a few extra steps to air travel — knowing what’s actually required versus airline-specific, and packing with the flight itself in mind, can make the trip go a lot more smoothly.

The AAP notes it’s generally safe to fly once a newborn is about a week old, though many families wait until 2–3 months to reduce exposure risk in crowded airports and cabins. TSA allows formula, breast milk, and juice for infants and toddlers in reasonable quantities beyond the standard 3.4-ounce liquid limit — just declare them separately at the checkpoint. And while a certified car seat or CARES harness is the safest way for a child under 2 to fly, policies on booking an infant seat, bringing a car seat, and gate-checking gear differ by airline, so confirm directly with yours before you travel.

When to Fly With a Baby

According to the American Academy of Pediatrics, it’s generally safe to fly when a newborn is at least 7 days old, though the AAP notes many families wait until their baby is 2 to 3 months old. That extra time mainly reduces the chance of picking up an infection in crowded airports and cabins, at an age when illness carries more risk.

If your baby was born early, or has a heart, lung, or other health condition, check with your pediatrician before booking a flight — timing recommendations can differ based on your baby’s specific health history.

Packing for the Flight

Diapers and wipes, plus extras for delays
A full change of clothes for your baby, and a spare shirt for you
Feeding supplies — bottles, formula, or breastfeeding gear, packed for easy access at security and in-flight
Pacifier, if your baby uses one, for sucking during takeoff and landing
A lightweight blanket or swaddle for cabin temperature changes
Any medications your baby takes, in their original packaging
Your baby's ID/insurance card, and a passport if the flight is international

Policies on infant fares, lap-child rules, bringing or gate-checking a car seat, and stroller check-in differ by airline and can change. Confirm directly with your airline when you book, and again shortly before you fly, rather than assuming a rule from one airline or a past trip still applies.

Getting Through Airport Security With Formula or Breast Milk

The TSA’s standard carry-on liquid limit is 3.4 ounces per container, but formula, breast milk, and juice for infants and toddlers are allowed in reasonable quantities greater than that, and don’t need to fit in the quart-sized liquids bag with your other items.

Tell the TSA officer at the start of screening that you’re carrying these items so they can be screened separately from the rest of your bag. Officers may test the liquids for explosives, but screening should never involve opening a container and putting anything directly into the liquid. Packing these items in clear, translucent bottles rather than pouches or opaque containers can also help avoid additional screening steps.

Car Seats and Restraint Options on the Plane

The FAA’s guidance is direct: the safest place for a child under 2 on a U.S. flight is in an approved child restraint system, not on a parent’s lap. A forward- or rear-facing hard-backed car seat can be used on a plane if it’s certified for aircraft use — look for a label stating “This restraint is certified for use in motor vehicles and aircraft,” and install it according to the manufacturer’s instructions.

A CARES harness is another FAA-certified option — a supplemental harness, used with the aircraft’s own seatbelt, for children who are 22 to 44 pounds and up to 40 inches tall. Whichever restraint you choose, using it requires a ticketed seat for your child; a car seat or CARES harness can’t be installed on an adult’s lap seat with a lap infant.

The FAA notes that turbulence is the leading cause of children’s injuries on airplanes, and unrestrained lap infants are especially vulnerable during meal service or unexpected turbulence. A ticketed seat with a certified restraint costs more, but it’s the option the FAA and AAP both point to as safest.

Easing Ear Pressure and In-Flight Comfort

Sucking — nursing, a bottle, or a pacifier — during takeoff and landing can help ease ear-pressure discomfort for a flying baby, per AAP guidance. Don’t give any medication, including an over-the-counter sedative or motion-sickness remedy, to help a baby sleep or stay calm during a flight without your pediatrician’s approval first.

Sources

This guide is based on published guidance from the American Academy of Pediatrics via HealthyChildren.org (“Flying With Baby: Parent FAQs & Tips for Safer, Easier Air Travel”), the Federal Aviation Administration’s child restraint system and CARES harness guidance, and the Transportation Security Administration’s guidance on traveling with formula, breast milk, and juice. It’s provided for general education — always confirm current requirements with your airline before you travel.

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