Can I bring my car seat on board if I didn't buy a seat?

No. If you do not purchase a separate seat, you cannot use a car seat on the plane. It must be checked at the gate or the ticket counter.

Is it safer for the baby to be in their own seat?

Yes. The FAA and aviation safety experts state that the safest place for a child on an airplane is in an approved child restraint system (car seat) secured to the aircraft seat.

Do I need proof of age for a lap infant?

Yes. Most airlines will require a copy of the birth certificate to verify the child is under two, especially on the return leg of the trip.

Buying a separate airplane seat for your baby: A decision guide

You should purchase a separate seat if you are flying long-haul (over 4 hours) or if you want to use your FAA-approved car seat for safety and child containment. If you are flying short-haul on a tight budget, holding a child under age two as a 'lap infant' is a common and legal way to save money.

Check the age and weight limits. Most airlines allow 'lap infants' until they turn two. Once the child turns two, federal regulations strictly require them to have their own seat.
Evaluate the flight duration. For flights under 3 hours, a lap infant is manageable. For flights longer than 4 hours, a separate seat allows the child to sleep in their own space and gives you a break from constant physical contact.
Verify your car seat compatibility. If you buy a seat, ensure your car seat is FAA-approved (check for a label on the bottom). A car seat provides the safest environment for the child during turbulence and keeps them familiar with their sleeping routine.
Book the ticket correctly. If you decide on a seat, you must purchase a ticket in the child's name at the child fare rate. If you choose to hold them, call the airline after booking your own ticket to add the 'infant-in-lap' status, even if it is free.

Can I bring my car seat on board if I didn't buy a seat?: No. If you do not purchase a separate seat, you cannot use a car seat on the plane. It must be checked at the gate or the ticket counter.
Is it safer for the baby to be in their own seat?: Yes. The FAA and aviation safety experts state that the safest place for a child on an airplane is in an approved child restraint system (car seat) secured to the aircraft seat.
Do I need proof of age for a lap infant?: Yes. Most airlines will require a copy of the birth certificate to verify the child is under two, especially on the return leg of the trip.