The FAA does not approve or certify booster car seats

The Federal Aviation Administration (FAA) does not have an approval process for booster car seats. The FAA sets rules about how children can travel on aircraft — specifically, that children under 2 years old may sit on a lap, and children 2 and older must have their own seat. But the FAA does not test, certify, or endorse specific booster seat models.

What does exist is NHTSA certification. The National Highway Traffic Safety Administration, part of the U.S. Department of Transportation, sets the federal safety standard for car seats used in vehicles. Every booster seat sold in the United States must meet NHTSA's Federal Motor Vehicle Safety Standard 213 (FMVSS 213). This is the only federal safety standard that applies to booster seats, whether you use them in a car or on an airplane.

The confusion arises because some booster seats are labeled as "FAA approved for aircraft use" or similar language. What this actually means is that the seat meets NHTSA standards and the airline allows it on board — not that the FAA has tested or endorsed it.

Key Takeaways

  • The FAA does not certify booster car seats; NHTSA is the federal agency that sets safety standards for all car seats sold in the United States.
  • Any booster seat that meets NHTSA's Federal Motor Vehicle Safety Standard 213 can be used on an airplane if the airline permits it.
  • Airlines set their own rules about which car seats they allow on board, and these rules vary by carrier.
  • A booster seat labeled "FAA approved" or "approved for aircraft use" means the airline has cleared it, not that the FAA has tested it.
  • The same booster seat that works in your car meets the same federal safety standard whether you use it in a vehicle or on a plane.

How NHTSA standards work and what they cover

NHTSA's FMVSS 213 standard requires booster seats to protect children in a crash by positioning the vehicle's lap and shoulder belt correctly across the child's body. The standard includes tests for structural integrity, belt routing, and how the seat performs in frontal and side-impact crashes. Every booster seat manufacturer must test their products to this standard and certify compliance before selling them in the U.S. market.

This standard applies whether the booster is used in a car, a rental vehicle, or on an airplane. The seat itself does not change. The safety requirements do not change. What changes is the environment — a plane cabin instead of a car — but the seat's ability to position a child correctly remains the same.

You can find the NHTSA certification label on the back or side of any booster seat sold legally in the United States. It will state that the seat meets FMVSS 213. This label is your confirmation that the seat has met federal safety standards. No additional FAA approval is needed or possible.

Why airlines have their own rules about booster seats

Airlines are not required to allow car seats on board at all. Each airline decides whether to permit them and, if so, which models. Some airlines maintain a list of approved seats; others allow any seat that meets NHTSA standards. A few airlines restrict booster seats to children in certain age or weight ranges, or do not allow them at all.

Airlines make these decisions based on their own safety assessments, cabin configuration, and operational policies. The FAA does not mandate that airlines accept car seats or booster seats. The FAA's role is limited to setting rules about how children must be restrained during flight — and those rules allow (but do not require) the use of a car seat or booster seat that meets NHTSA standards.

Before you travel, contact your airline directly to confirm their policy. You can usually find this information on their website under "traveling with children" or "car seats," or by calling their customer service line. Policies change, and what one airline allows another may not.

The difference between lap travel and using a booster seat on a plane

Children under 2 years old are permitted to travel on a lap in the United States. Children 2 and older must have their own seat. When a child has their own seat, parents can choose to use a car seat, a booster seat, or straightforward have the child sit in the seat with the airline's standard lap belt.

If you use a booster seat on a plane, it works the same way it does in a car: it positions the child so the airplane's lap and shoulder belt fit correctly. The booster seat itself is not restrained to the airplane seat — the child is restrained by the airplane's belt system, which passes through the booster seat's belt guides.

This is different from how a car seat works in a vehicle. In a car, the car seat is anchored to the vehicle with LATCH connectors or the vehicle's seat belt, and the child is restrained inside the car seat. On a plane, the booster seat is not anchored; it is straightforward a positioning device that the airplane's belt system passes through.

What to look for when choosing a booster seat for air travel

Start by confirming your airline's policy. Some airlines publish a list of approved models on their website. If your airline does not have a specific list, the general rule is that any booster seat meeting NHTSA standards is permitted, but contact the airline to be certain.

Look for a booster seat that is lightweight and compact, since you will be carrying it through the airport and storing it in the overhead bin or under the seat in front of you. Some booster seats fold or have carrying handles. Check the seat's dimensions against your airline's carry-on size limits if you plan to bring it as luggage.

Confirm that the booster seat has belt guides that work with both lap and shoulder belts — this is necessary for airplane use. Most modern booster seats have this feature, but older models may not. The NHTSA label on the seat will confirm that it meets the federal standard, which is the only safety certification that matters.

Common misunderstandings about FAA approval and booster seats

Myth: A booster seat needs FAA approval to be safe on a plane. The FAA does not approve booster seats. Safety comes from NHTSA certification, which every booster seat sold in the U.S. has. The FAA's role is to set rules about restraint during flight, not to test or certify the seats themselves.

Myth: Some booster seats are "FAA approved" and others are not. This language appears in marketing materials and on some retailer websites, but it is misleading. What varies is airline policy, not FAA approval. An airline may allow certain models based on their own criteria, but that is not the same as FAA approval.

Myth: You need a special booster seat for airplane travel. The same booster seat you use in your car can be used on a plane, as long as your airline permits it. You do not need to buy a different seat. The safety standard is the same; only the environment changes.

Myth: The FAA has tested booster seats for crash safety. The FAA does not conduct crash tests on booster seats. NHTSA conducts those tests and sets the standard that manufacturers must meet. The FAA's focus is on how passengers are restrained during normal flight operations and emergency situations specific to aircraft.

How to verify a booster seat's actual safety status

Check for the NHTSA certification label on the booster seat itself. This label will state the model name, the manufacturer, and a statement that the seat meets FMVSS 213. This is the only federal safety certification that applies to booster seats in the United States.

You can also search the NHTSA database of registered car seats and booster seats on their website. This database includes all models that have been registered with NHTSA and meet the federal standard. If a booster seat is in this database, it has met federal safety requirements.

For airline-specific information, visit your airline's website or call their customer service. They will tell you whether they allow booster seats, which models (if any) they prefer, and what documentation you may need to bring on board. Some airlines ask to see the booster seat before boarding to confirm it meets their standards.

Frequently Asked Questions

Can I use any booster seat on an airplane?

Any booster seat that meets NHTSA's Federal Motor Vehicle Safety Standard 213 can be used on an airplane, but your airline must permit it. Airlines set their own policies, so contact your carrier before your trip. Some airlines have restrictions based on the child's age, weight, or the specific booster seat model.

What does "FAA approved for aircraft use" mean when I see it on a booster seat?

This phrase is marketing language, not an official FAA designation. It typically means the booster seat meets NHTSA safety standards and the retailer or manufacturer believes it is suitable for airplane use. The FAA does not approve booster seats. Check your airline's policy to confirm they allow the specific model you are considering.

Is a booster seat safer than a regular seat belt on a plane?

A booster seat positions the airplane's lap and shoulder belt correctly across a child's body, which is the same function it serves in a car. Whether this is "safer" than a regular seat belt depends on the child's size and how well the standard belt fits. For children who are too small for the airplane's standard belt to fit properly, a booster seat ensures correct positioning.

Do I need to buy a special booster seat for flying, or can I use my car seat?

You can use the same booster seat you use in your car, as long as your airline permits it and the seat meets NHTSA standards. You do not need to purchase a separate seat for flying. The safety standard is identical whether the seat is used in a vehicle or on a plane.

Where can I find my airline's booster seat policy?

Most airlines publish their car and booster seat policies on their website under sections titled "traveling with children," "car seats," or "safety." If you cannot find the information online, call the airline's customer service line directly. Policies vary by carrier and can change, so confirm before your trip.