Can a booster seat be used on an airplane?

No. The FAA prohibits booster seats, backless child restraints and baby carriers during taxi, takeoff and landing. Check the booster as baggage for use at your destination. On the plane the child uses the aircraft lap belt, or a CARES harness if they weigh 22 to 44 pounds and are up to 40 inches tall.

Does a child under 2 need their own seat to use a car seat?

Yes. Children under 2 may fly as lap children, but buying the child a seat is the only way to guarantee you can use a car seat. The FAA strongly urges securing children under 2 in an approved restraint in their own seat, and the AAP calls a ticketed seat the safest option.

Which airplane seat should a car seat go in?

The AAP recommends a window seat so the car seat does not block anyone's exit, and advises avoiding aisle and exit rows. This is guidance, not an FAA rule; each airline sets its own seat-location policy, so check with your carrier when booking. If an approved car seat does not fit a ticketed seat, the FAA says the airline must accommodate it in another seat in the same class.

What is the CARES harness?

CARES is an FAA-certified harness for children who can sit upright alone, weigh 22 to 44 pounds and are up to 40 inches tall, in their own forward-facing seat. It is approved for all phases of flight but only on aircraft, not in cars. The FAA warns about counterfeits and advises buying from the manufacturer.

What is the lightest car seat to fly with?

Among the seats in this roundup, the WAYB Pico is about 8 pounds and folds flat, but it is forward-facing only, from 26.5 to 50 pounds on its current listing. For infants, the Graco SnugRide Lite LX carrier is about 7 pounds. The Baby Trend Trooper Slim is about 12 pounds and also rear-faces.

Best FAA-Approved Car Seats for Airplanes (2026)

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

Look for a label on the seat itself that reads 'This restraint is certified for use in motor vehicles and aircraft.' Seats approved by a foreign government need that government's required marking. The FAA also says to check the manual to confirm the seat can be secured in an airplane seat; otherwise you may be asked to check it.

A car seat can be used on a US flight if it is a hard-backed, harnessed seat with this text on its label: "This restraint is certified for use in motor vehicles and aircraft." Your child also needs their own purchased seat on the plane. Booster seats cannot be used during taxi, takeoff or landing. The FAA prohibits boosters, backless seats and baby carriers for those phases of flight (FAA Kids' Corner). For flying, the lightest seat that fits your child usually wins. That means an infant carrier for babies, the 8 lb WAYB Pico or the 12 lb Baby Trend Trooper Slim for toddlers, and the 1 lb CARES harness as an aircraft-only option for children 22–44 lb.

Quick verdict

Infants (4–30 lb): Graco SnugRide Lite LX, about 7 lb for the carrier
Forward-facing toddlers who fly often: WAYB Pico, about 8 lb and folds flat
Best value, rear-facing and forward-facing: Baby Trend Trooper Slim, about 12 lb and 17.75 in at its widest
Light forward-facing harness for older toddlers: Graco Tranzitions, about 15 lb
Only if you'll also use it daily at your destination: Graco SlimFit 3-in-1 (about 19.5 lb) or Graco 4Ever DLX (about 22 lb)
No car seat at all: the CARES harness, for aircraft use only

How we assessed this: we have not tested these seats. Picks come from manufacturer specifications, the label requirements set by the FAA, and guidance from NHTSA and the AAP. How We Research.

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

Look for the certification label on the seat's shell, not on the box or the website. US seats need the sentence "This restraint is certified for use in motor vehicles and aircraft." Seats approved by a foreign government need that government's required marking (FAA). The FAA also tells you to read the manual to confirm the seat can be secured in an airplane seat. If it can't, you may be asked to check it as baggage.

On a multi-mode seat, the label covers the harnessed modes only. A 3-in-1 or 4-in-1 used as a belt-positioning booster is a booster, and the booster rule applies. If your child rides in booster mode at home, they either fly in harness mode (if they are still within the harness limits) or don't use the seat on the plane.

Can a child use a booster seat on the plane?

No, not during taxi, takeoff or landing. The FAA prohibits booster seats, backless child restraints and baby carriers during those phases (FAA Kids' Corner). A booster depends on a shoulder belt, and aircraft seats have only a lap belt. If your child uses a belt-positioning booster in the car, such as the Chicco KidFit, check the booster as baggage in a padded bag and use it in the rental car. On the plane, your child sits with the aircraft lap belt or, if they are 22–44 lb and up to 40 inches tall, in a CARES harness.

Do I need to buy a seat for a child under 2?

Not legally. Children under 2 may fly as lap children. But the FAA says the safest place for a child under 2 is in an approved restraint in their own seat, because "your arms aren't capable of holding your in-lap child securely, especially during unexpected turbulence." The FAA also notes that buying a ticket is the only way to guarantee you can use the car seat (FAA Kids' Corner). The AAP gives the same advice: a ticketed seat with an approved car seat is the safest option.

The seats compared

Seat	Weight	Child limits (per catalog)	Directions	Use on the plane	Price tier
Graco SnugRide Lite LX	~7 lb (carrier only)	4–30 lb	Rear-facing only	Carrier without base; check label	Budget
WAYB Pico	~8 lb	26.5–50 lb, 33.5–45 in	Forward-facing only	FAA approved per WAYB	Premium
Baby Trend Trooper Slim	~12 lb, 17.75 in at widest	RF 4–40 lb, FF harness 30–65 lb, to 50 in	RF, FF (no booster mode listed)	Harnessed modes	Budget
Graco Tranzitions 3-in-1	~15 lb	Harness 26.5–65 lb, booster 40–100 lb	Forward-facing only	Harness mode only	Budget
Graco SlimFit 3-in-1	~19.5 lb	5–100 lb across modes	RF, FF, highback booster	Harnessed modes only	Mid-range
Graco 4Ever DLX	~22 lb, 20 × 21.5 × 24 in	4–120 lb across modes	RF, FF, two booster modes	Harnessed modes only	Mid-range

Always confirm the label on your own seat. Limits can change between production runs. The WAYB Pico, for example, has been sold with a 22 lb minimum in earlier versions and 26.5 lb in the current listing, so go by the sticker and manual of the seat you have.

Lightweight seats to fly with

Graco SnugRide Lite LX: best for infants

Graco SnugRide Lite LX Infant Car Seat, Lightweight Rear-Facing Seat

Best for Infants

Graco

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At just 7 lbs for the carrier, the lightest way to keep your baby rear-facing and safe on the plane.

weight:~7 lb (carrier only)

age Range:4–30 lbs, rear-facing

install:LATCH installation

safety:ProtectPlus Engineered

Pros

Ultra-lightweight at 7 lbs
4-position adjustable base
ProtectPlus Engineered safety
LATCH for easy install

Cons

Rear-facing only
Outgrown by 30 lbs
Base sold separately for second car

Check Price on Amazon

About 7 lb for the carrier, rated rear-facing from 4 to 30 lb. On the plane you leave the base behind and route the aircraft lap belt through the carrier's belt path, following the manual. Your baby can stay in the same seat from the car to the terminal to the airplane seat. A compatible stroller frame saves carrying it through the terminal.

Buy it if: your baby is under about a year and you want the lightest rear-facing option.
Skip it if: your baby is close to 30 lb or to the seat's height limit. Move to the Trooper Slim, which also rear-faces to 40 lb.

WAYB Pico: lightest for forward-facing toddlers

WAYB Pico Travel Car Seat with Premium Carrying Bag, Lightweight Portable Foldable

Lightest Toddler Seat

WAYB

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About 8 lbs and folds flat into a carry bag — the lightest harnessed seat here for forward-facing toddlers.

weight:~8 lbs

age Range:26.5–50 lbs, 33.5–45 in

direction:Forward-facing only

fold:Folds flat for travel

Pros

Ultra-lightweight at 8 lbs
Folds flat into carrying bag
Perfect for airplanes and rideshares
Premium build quality

Cons

Very expensive
Forward-facing only
Limited weight range
No rear-facing option

Check Price on Amazon

At about 8 lb, the Pico is the lightest harnessed seat here. It folds flat into its own carry bag, and it installs with a seat belt only, so it also works in taxis and rideshares at your destination. The limits are its weak point. It faces forward only, from 26.5 lb and 33.5 in on the current listing to 50 lb and 45 in, which typically means a window from about age 2 to age 4 or 5. The AAP recommends keeping children rear-facing as long as their seat allows (HealthyChildren.org), so the Pico suits children who have already outgrown rear-facing.

Buy it if: you fly or take rideshares several times a year with a forward-facing toddler and want the lightest carry.
Skip it if: your child is still rear-facing or under the minimum, or you fly once a year. It is the most expensive seat here, costing far more than the Trooper Slim. Full Pico review.

Baby Trend Trooper Slim: best value, rear-facing and forward-facing

Baby Trend Trooper Slim 3-in-1 Convertible Car Seat

Best Budget Pick

Baby Trend

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One of the cheapest seats here, aircraft-labeled in its harnessed modes, and 17.75 inches at its widest — a convertible that rear-faces to 40 lb and forward-faces in the harness to 65 lb.

weight:~12 lb

age Range:Rear-facing 4–18 and 18–40 lb · forward-facing harness 30–65 lb · max height 50 in

width:17.75 in at its widest, per Baby Trend

safety:FAA approved, side impact protection

Pros

FAA approved for air travel
17.75 in at its widest, narrower than many convertible seats
Three harnessed modes: rear-facing 4–18 and 18–40 lb, forward-facing 30–65 lb
Lightweight at roughly 12 lb, at a budget price

Cons

Heavier than dedicated travel seats like the WAYB Pico
Basic padding and comfort features
No booster mode on Baby Trend's current page — check the manual for your version
No premium recline adjustment

Check Price on Amazon

About 12 lb and 17.75 in at its widest, per Baby Trend, the Trooper Slim is built around a narrow base, which is the number that matters in an economy seat (compare it with your airline's published seat width). It rear-faces from 4 to 40 lb and forward-faces in the harness from 30 to 65 lb, up to 50 in tall. Baby Trend's current page lists no booster mode; check the manual for your version. Baby Trend places the aircraft label on the shell near the recline foot. As with every multi-mode seat, only the harnessed modes count for the plane.

Buy it if: you want one inexpensive seat that rear-faces on the plane, works in the rental car, and grows with your child.
Skip it if: your child is forward-facing and you fly often enough that 4 extra pounds over the Pico matters. The padding is basic. Full Trooper Slim review.

Graco Tranzitions 3-in-1: light forward-facing harness for bigger kids

Graco Tranzitions 3-in-1 Harness Booster Car Seat

Best Value

Graco

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A forward-facing harness seat that transitions to a booster — FAA-approved in harness mode at a budget-friendly price.

weight:~15 lb

age Range:26.5–100 lbs (harness 26.5–65 lb; highback and backless booster 40–100 lb)

modes:3 modes: forward-facing harness, highback booster, backless booster

extras:Dual cup holders

Pros

3-in-1 grows with child
Light for a harnessed seat
Harness for younger kids
Dual cup holders

Cons

Forward-facing only (no rear-facing)
Basic padding
Harness mode limited to 65 lbs

Check Price on Amazon

About 15 lb by retailer listings (check the box), forward-facing only, with a 5-point harness from 26.5 to 65 lb that later converts to a highback and backless booster (40–100 lb). The harness rating runs higher than the Pico's 50 lb, so it suits bigger preschoolers who still fit a harness. It counts as an aircraft seat in harness mode only. If your child rides in it as a booster at home, switch it back to the harness for the flight if they still fit, or check it.

Buy it if: your child is clearly past rear-facing and you want a light, cheap harness seat that stays in the closet between trips.
Skip it if: your child should still be rear-facing. Choose the Trooper Slim instead.

Only if you'll also use it daily at your destination

Heavy all-in-one seats are hard to fly with. The case for bringing one is that it is already your everyday seat, your child is used to it, and you need it in a car for a long stay. Measure the base against your airline's published seat width before you fly. If an approved seat doesn't fit a ticketed seat, the FAA says the airline must find another seat for it in the same cabin class (FAA).

Graco SlimFit 3-in-1

Graco Slimfit 3-in-1 Convertible Car Seat, Space Saving Design

Everyday Seat That Can Fly

Graco

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A convertible seat Graco says is 10% slimmer with the cup holders folded away, which helps in a narrow airplane seat.

weight:~19.5 lb

age Range:5–100 lbs (rear-facing to booster)

modes:3 modes: rear-facing, forward-facing, highback booster

design:Space-saving slim design

Pros

Slim design: Graco says 10% slimmer with cup holders folded away
3-in-1 grows with child
Rotating cup holder
Space-saving for smaller cars

Cons

Heavy at about 19.5 lbs
Not ideal for air travel
Cup holder placement can be awkward

Check Price on Amazon

About 19.5 lb, rated 5–100 lb across rear-facing, forward-facing harness and highback booster modes. Graco says it is 10% slimmer with the cup holders folded away, which helps in a narrow airplane seat. The three-across claim you may see belongs to a different seat, the SlimFit3 LX. At 19.5 lb it is a lot to carry through a terminal. Plan on a car seat travel bag with straps or a cart.

Buy it if: this is your daily seat and you need it in the car for a long stay at your destination.
Skip it if: you are buying a seat mainly to fly with. The Trooper Slim covers the rear- and forward-facing harness years at about 12 lb, though it lists no booster mode.

Graco 4Ever DLX

Graco 4Ever DLX 4-in-1 Car Seat, Infant to Toddler

Everyday Seat That Can Fly

Graco

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One seat from birth to booster — the 4-in-1 design means you buy once and fly for years.

weight:~22 lb

age Range:4–120 lbs (10 years of use)

modes:4 modes: rear-facing, forward-facing, highback, backless booster

dimensions:20 × 21.5 × 24 in

Pros

4-in-1 lasts 10 years
InRight LATCH for quick LATCH attachment
No-rethread harness
Machine-washable seat pad

Cons

Heavy at 22 lbs
Bulky for air travel
Premium price

Check Price on Amazon

About 22 lb, with listed dimensions of 20 × 21.5 × 24 in, rated 4–120 lb across four modes. Its harnessed modes can be used on the plane, but at that size it may not fit narrower economy seats. Compare Graco's width figure with your airline's seat width before you book, and expect a heavy carry.

Buy it if: you already own it, it's the seat your child sleeps in, and you'll be driving a lot at your destination.
Skip it if: you are shopping for a flying seat. Almost anything else here is lighter and narrower.

What about the CARES harness?

CARES is a belt-and-buckle harness that loops around the airplane seatback and works with the lap belt. The FAA certifies it for children who can sit upright on their own, weigh 22–44 lb and are up to 40 inches tall, in their own seat, for every phase of flight. It is approved for aircraft only, so you still need a car seat for the ride from the airport. The FAA warns about counterfeit CARES devices sold online and advises buying from the manufacturer (FAA Kids' Corner). See the CARES review for fit details.

How do you install a car seat on a plane?

Use the window seat when you can. The AAP recommends a window seat for a car seat so it doesn't block anyone's way out, and says to avoid aisle and exit rows. Airlines may also set their own rules on which rows can take a car seat, so check when you book.
Face it the way the label says for your child's size. The FAA requires installation per the manufacturer's instructions, rear- or forward-facing as labeled.
Use the lap-belt path in your manual. Aircraft have no LATCH anchors and no top tethers. Thread the lap belt through the path the manual specifies, buckle it, and tighten while pressing the seat down.
Board early. The AAP suggests taking family boarding so you aren't installing while the aisle fills.
Practice at home. Find the aircraft belt path in the manual before the trip, not at the gate.

Getting the seat through the airport

TSA requires car seats and booster seats to go through the X-ray, and seats too big for the machine get a physical inspection (TSA). A padded bag with backpack straps, such as the J.L. Childress car seat travel bag, covers both carrying a light seat and protecting one you check. If a seat has been checked without padding, inspect the shell, harness and buckle before your child rides in it, and contact the manufacturer if anything looks wrong.

For general guidance on choosing the right seat type for your child's age and size, see NHTSA's car seat finder.

Individual reviews

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Best FAA-Approved Car Seats for Flying (2026): Lightest Seats First

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

Can a child use a booster seat on the plane?

Do I need to buy a seat for a child under 2?

The seats compared