Children under 2 fly free on the lap on most US domestic flights but require a paid ticket internationally. Bring TSA-approved snacks, a tablet with pre-downloaded content, headphones, and a small comfort item.
Flying with kids isn't optional for most families — but it doesn't have to be miserable. Here's the practical guide US travel agents share with parents.
Lap Infants vs Paid Seats
| Age | US domestic | International |
|---|---|---|
| 0–24 months | Free as lap infant | ~10% of adult fare + taxes |
| 2+ years | Full ticket required | Child fare often ~75% of adult |
Even though lap infants fly free domestically, the FAA recommends a separate seat with an FAA-approved car seat for safety — the cost is essentially the kid fare on most carriers.
TSA Rules for Kids
- Kids 12 and under can keep shoes on through security
- Larger amounts of formula/breast milk/juice for infants are allowed — declare at the checkpoint
- Strollers and car seats are free check-in (gate or curbside)
- Parents with TSA PreCheck get expedited screening; kids 12 and under can come with you for free, even without their own PreCheck
Car Seats on Planes
FAA-approved car seats (look for the "Approved for use on aircraft" sticker) can be installed in any seat except exit rows. Bring it with you — most airlines won't provide one.
In-Flight Survival Kit
For each child, pack:
- Tablet with 4+ hours of pre-downloaded shows/movies
- Kid-sized headphones (regular headphones don't fit small heads)
- Backup snacks (airline snacks delay or run out)
- Small toys/coloring books
- One comfort item (stuffed animal, blanket)
- Change of clothes (for them AND you, if infant)
- Ziploc for messes
Pressure Equalization
Babies and toddlers struggle with ear pressure during descent. Solutions:
- Infants: nurse, bottle, or pacifier during descent
- Toddlers: lollipop or chewy snack
- Older kids: chewing gum, drinking water
Seat Strategy for Families
- Bulkhead row for infants — most carriers offer bassinets on long-haul international
- Avoid rear of plane for toddlers — bathroom queues and engine noise
- Don't split parents — most US airlines now block-seat families together for free under DOT rules
Unaccompanied Minors
Most US airlines accept unaccompanied minors aged 5–14 with mandatory $150 fee each way and direct flight only. Some accept ages 15–17 with optional escort service.
International Considerations
- All children need their own passport (no more parent-passport endorsements)
- Single-parent travel often requires a notarized consent letter from the other parent
- Some countries require proof of return ticket