Bringing your little one along for air travel can be exciting, but it can also feel overwhelming. We’re sharing helpful tips for packing, seating and keeping your baby entertained—both while moving through the airport and once you’re in the air.
Minimum Age and Health Requirements for Flying
Because airplanes expose newborns to unfamiliar germs and changes in cabin pressure, many health experts recommend waiting until a baby is a few weeks old before flying. Premature infants may need to wait five to six weeks, especially if they have heart or lung problems. Before traveling, it’s a good idea to check with your child’s pediatrician to confirm that your baby is healthy enough to fly and up to date on routine vaccinations. In some cases, airlines may request a doctor’s letter, doctor’s certificate or a completed passenger medical form if a baby has certain medical conditions.
Parents should also confirm airline requirements before traveling with an infant. Allegiant does not require a letter of consent or pediatrician permission note for infants, but parents must provide proof of age for a child traveling on a lap. Always review airline guidelines in advance to ensure a smooth and safe trip for your family.
Airline Policies and Ticketing for Infants
When traveling domestically, children under the age of two can usually fly as a lap infant, also known as an infant-in-arms, without paying an infant fee when traveling with a ticketed adult fare. Most airlines offer a seating together guarantee, meaning you do not need to purchase a reserved seat for your baby. However, you should let the airline know in advance that you will be traveling with an infant. Each airline’s open-seat policy may vary, so it’s important to review the details before your trip.
Families should also check airline baggage policies before traveling. Many airlines offer a checked bag allowance for infants, and some allow stroller and car seat check at no extra cost. For example, Allegiant permits one car seat per passenger to be checked for free, and this policy also applies to strollers, helping ensure your child stays comfortable from curb to cabin.
Packing and Essential Items for Air Travel
Traveling with a baby means bringing along plenty of necessities, so having a packing list can help make the trip smoother. Allegiant allows parents to bring a diaper bag along with a carry-on, giving you space for essentials like breast milk, formula and feeding supplies, which are screened separately at security.
Inside your diaper bag, pack items to handle messes and quick cleanups throughout the trip. Antibacterial wipes are useful for wiping down tray tables and armrests, while a wet bag is helpful for storing soiled clothes. Bringing an extra outfit is always a smart backup. Most aircraft restrooms include a changing table, making diaper changes more manageable while onboard.
Security Screening and Documentation
Going through airport security with a baby is usually a straightforward process for families. During screening, most passengers pass through advanced imaging technology screening, though adults traveling with infants may instead walk through a metal detector, which is safe for babies. Strollers and a FAA approved car seat that meets Federal Motor Vehicle Safety Standards may be screened separately and can be gate checked if you prefer to use them up to boarding.
Parents who want additional guidance or assistance can contact TSA Cares before traveling. This program helps families understand what to expect at security, especially when traveling with infants or young children who may need extra support.
Seating and Safety Options for Infants
To help keep your child safe while flying, the FAA recommends using an approved child restraint system whenever possible. Options may include a CARES restraint device, SkyCots or a baby bassinet, depending on the aircraft. Skycots and bassinets are typically available in a bulkhead seat, so availability should be confirmed with the airline in advance. Some airlines may also allow the use of a lap belt and loop belt, though safety guidance can vary.
For children under 40 pounds, a rear-facing car seat is often the safest choice during the flight. When securing a car seat onboard or checking it at the gate, consider using a protective bag to prevent damage. A window seat is typically recommended for a car seat installation and can also offer fewer disruptions and added interest for your little one during the flight.
Feeding and Nutrition During Flights
Traveling with a baby also usually means packing a variety of feeding supplies. Fortunately, items such as baby bottles, powdered formula, expressed breast milk and other baby food are exempt from TSA’s 3-1-1 liquid rule and are screened separately. You can also bring a breast pump, sterile water and cooling items like formula cooling accessories, freezer packs, gel packs and ice packs through security when needed. Packing these items in a small, soft-sided cooler can help keep everything organized and at a safe temperature, especially if your child has a special diet.
To reduce stress during the flight, consider feeding during takeoff and landing, which can help ease pressure-related discomfort. For added convenience, parents may pack easy-to-serve items such as puree pouches, which are mess-free and simple to dispose of after use.
Dealing with In-Flight Challenges
Flying can be stressful for both babies and parents, as cabin pressure, turbulence and unfamiliar surroundings may lead to ear pain or discomfort. Nursing during takeoff and landing or offering a pacifier can help relieve pressure in your baby’s ears. In some cases, parents may choose to use acetaminophen (Tylenol®) to help ease discomfort, though you should always follow pediatric guidance.
Try to take a bathroom break or complete a diaper change before boarding, but a flight attendant can also direct you mid-flight to the appropriate restroom.
Managing Comfort and Entertainment
Airport play areas can help kids burn off energy before boarding. Try to choose a seat assignment that supports their routine. Selecting a flight time that aligns with your child’s sleep schedule can also help reduce stress, though very early or late flights may not be ideal.
During the flight, follow FAA guidelines and work with flight attendants to ensure your child is safely secured. Children should be properly buckled using the aircraft seat safety belt, restraint straps or approved child safety seats, following the manufacturer’s instructions and any stated weight limit. Some parents choose to keep infants in a carrier during quieter moments, when permitted.
To keep your child engaged, pack favorite toys, books or quiet games in your carry-on. A window seat often helps hold a toddler’s attention, while bringing familiar comfort items—such as toys or noise-canceling headphones for older babies—can help your child stay calm and comfortable throughout the flight.
From check-in to landing, planning ahead can alleviate some stress and keep your child comfortable. MidAmerica St. Louis Airport is committed to supporting families every step of the way, helping them fly with greater confidence and peace of mind.