16 inchesTips for Parents. Make sure your CRS or device is approved for use on airplanes. Measure the width of your CRS. It should fit in most airplane seats if it is no wider than 16 inches.
Is a plane seat smaller than a car seat?
Measure your child's seat. To fit into a typical coach seat, the car seat should be no wider than 16 inches (though you can lift the airplane seat's armrest to accommodate slightly wider car seats). Also, some seats are a bit wider.
Will my Graco car seat fit on a plane?
Most harnessed Graco® car seats are certified for use in aircraft, when used according to manufacturer's instructions. Please refer to your owner's manual for specifics on any seat.
Are airplane seats the same size as car seats?
Does my 2 year old need a car seat to fly?
You can choose to keep your baby or toddler in your lap if she's under 2. But children 2 and older have to sit in their own seats. In that case, both the FAA and AAP strongly recommend using a car seat or approved harness (booster seats aren't allowed).
Does a 3 year old need car seat on plane?
A car seat is not required, but is recommended by Southwest Here's some info from southwest.com: "Southwest Airlines and the Federal Aviation Administration (FAA) strongly recommend that infants and small children who weigh 40 pounds or less be secured in an appropriate CRS when traveling by air."
Do airlines let you take car seats?
Even if you don't want to use your car seat on the flight itself, you may want to take your car seat on your trip. Most airlines will allow you to check a car seat into the hold for free in addition to your baggage allowance. This applies to toddler car seats and booster seats as well as baby car seats.