Car Seats on Planes: The FAA Rules, Booster Ban and Gate-Check Options (2026)

You can use a car seat on a US flight if it carries the aircraft certification label and your child has their own purchased seat. Harnessed infant, convertible and all-in-one seats usually qualify; booster seats do not. The FAA prohibits boosters, backless child seats and baby carriers during taxi, takeoff and landing. If you are still deciding whether to buy your child a seat at all, start with our lap child vs car seat vs CARES guide; this page covers the car seat itself.

Quick rules

• Look for the label: "This restraint is certified for use in motor vehicles and aircraft."
• Your child needs a ticketed seat. A lap child cannot use a car seat.
• Boosters are not allowed for takeoff and landing. Check them or gate-check them.
• The FAA does not set a window-seat rule; airlines decide where a car seat may go, and most require a window seat and never an exit row.
• If an approved seat does not fit, the FAA says the airline is responsible for accommodating it in another seat in the same class.

How do I know if my car seat is FAA-approved?

Find the certification label, usually a white sticker on the side or back of the shell near the model number and date of manufacture. According to the FAA's Flying with Children page, it must say "This restraint is certified for use in motor vehicles and aircraft," or the seat must be approved by a foreign government and carry that government's required label.

Many harnessed seats sold in the US carry the aircraft label, but not all, and the label often applies only to harness modes. Check your specific seat before the trip, and photograph the label so you can show it at the gate. If the sticker is missing or unreadable, contact the manufacturer; crew can refuse a seat they cannot verify.

Are booster seats allowed on airplanes?

No, not during taxi, takeoff or landing. The FAA states that it prohibits passengers from using baby carriers, booster seats or backless child restraint systems during ground movement, takeoff and landing. That covers both high-back and backless boosters, including inflatable ones like the Hiccapop UberBoost.

The reason is mechanical: a booster positions a car's lap-and-shoulder belt on a child's body, and aircraft seats have only a lap belt. Without the shoulder belt, a booster adds height without adding restraint. If your child uses a booster in the car, check it as baggage or gate-check it, and let your child ride in the aircraft seat belt, or in the CARES harness if they are within its limits.

Which car seats can and cannot be used on a plane?

The CARES limits come from the FAA: children who can sit upright alone, weigh 22 to 44 pounds and are up to 40 inches tall, in their own seat. The FAA warns about counterfeit CARES devices sold online, so buy from an authorized seller and check for the FAA approval text on the strap.

Where on the plane does a car seat go?

This is an airline policy, not an FAA rule. Most US airlines require a car seat to go in a window seat so it does not block anyone's path to the aisle, and none allow one in an exit row or the rows next to it. Some carriers also restrict certain rows, such as those with airbag seat belts or fixed armrests. Rear-facing seats may not be allowed in some rows because they block the recline of the seat in front.

Choose your child's seat at booking, not at the gate, and check your airline's car seat page for any row restrictions. If you are traveling with two adults, a window-middle-aisle block keeps one adult next to the child.

How do you install a car seat on an airplane?

Airplane seats have no LATCH anchors, so you install with the aircraft lap belt through the seat's belt path:

1. Use the belt path the manual specifies for a lap-belt-only installation (rear-facing and forward-facing paths differ).
2. Buckle the aircraft belt, then press down into the seat with your knee or hand while pulling the belt tight.
3. Check that the seat moves less than about an inch side to side at the belt path.
4. Harness your child as you would in the car.

Two tips help on board. The aircraft buckle sometimes sits in the middle of the belt path; if it prevents a tight fit, ask for a belt extender or flip the buckle. And practice a belt-only installation at home in your car first so you are not learning the belt path with a line of passengers behind you. Pre-boarding, where offered, gives you time; see our airport guide.

Should the car seat face forward or backward on the plane?

Follow the seat's label and manual for your child's size, the same as in a car. The AAP's car seat guidance recommends keeping children rear-facing as long as possible, until they reach the seat's rear-facing height or weight limit.

Rear-facing in the cabin keeps little feet away from the seat in front, but it needs fore-aft room. A seat that requires a steep recline may not fit in tight economy pitch. If it does not fit rear-facing and your child is within the forward-facing limits, forward-facing in the same seat is allowed. Some airlines restrict rear-facing seats in certain rows, so check before you fly.

What if my car seat does not fit in the airplane seat?

Many economy seats are about 17 to 18 inches between armrests, and some convertible seats are wider. Try these in order: lift the armrest if it moves; switch orientation if your child's size allows; ask the crew about another seat. The FAA says that if an approved car seat, for which a ticket has been purchased, does not fit, the airline is responsible for accommodating it in another seat in the same class of service.

If none of that works, the seat will be checked and your child will ride in the aircraft belt. A narrower seat makes the problem less likely: the Baby Trend Trooper Slim is 17.75 inches at its widest, per Baby Trend, and around 12 lb, carries the FAA label, and sits at the budget end of travel car seats. Our FAA-approved car seats roundup compares other widths and weights.

Should I gate-check or check a car seat instead?

If you are not using the seat on board, gate-checking is usually gentler than checking it at the counter, because it travels a shorter distance. Most US airlines do not charge to check a car seat, but confirm your carrier's policy. Ask the gate agent for a gate-check tag, leave the seat at the end of the jet bridge, and collect it at the aircraft door or at baggage claim, depending on the airline.

Either way the seat can be dropped, stacked or rained on. A padded bag such as the J.L. Childress car seat travel bag helps, and our stroller travel bags roundup lists options that fit car seats. When you collect the seat, inspect the shell, harness and buckle before driving. If there is visible damage, file a report with the airline before leaving the airport and contact the seat's manufacturer about whether it is still safe to use. Using the seat on board avoids the hold entirely.

How does a car seat get through TSA security?

Car seats are screened by X-ray. The TSA's traveling with children page says strollers, car seats and booster seats must go through the X-ray machine, and children are taken out and carried through the walk-through metal detector. If the seat is too big for the X-ray, officers inspect it by hand.

To move a car seat through the airport, strap it to a rolling suitcase or a travel stroller, or carry it in a backpack-style bag. Our guide to TSA rules for baby food, formula and breast milk covers the rest of the checkpoint.

What about car seats on international flights?

Foreign carriers set their own rules, and some accept only seats certified by their national authority, have different seat-width limits or restrict rear-facing installation. The FAA aircraft label is the US standard; other countries may not recognize it. Contact the airline well before you fly and get its car seat policy in writing if you can.

At your destination, the car seat rules of that country apply on the road. Our car seats in rental cars guide covers installing in unfamiliar vehicles, and our international travel guide covers wider planning.

Checklist for flying with a car seat

• Confirm the aircraft label and your child's fit in the mode you will use.
• Buy your child a seat and choose a seat location your airline allows (usually a window).
• Practice a lap-belt-only installation.
• Read your airline's car seat page for row and orientation restrictions.
• Pack a gate-check bag in case the seat does not fit.
• Bring the manual (or a PDF on your phone) and a photo of the label.

For travel-friendly seats, see our FAA-approved car seats roundup; for everything else about the flight, see the flying with a toddler guide. The NHTSA car seat pages cover choosing and installing seats for the car.

How we assessed this: This guide summarizes FAA, TSA, AAP and NHTSA guidance (checked October 2026) and product specifications. We do not test car seats. Airline policies change; check your carrier before you fly.