Easy American Airlines Lap Infant Guide [2026]

Before You Begin

Gather the booking and identity information below before adding your infant:

• Your booking reference: Use the six-character confirmation code to retrieve the adult reservation on aa.com.
• Your baby’s legal name and date of birth: For international travel, enter the name exactly as it appears on the passport.
• Proof of age: American Airlines may request a document such as a birth certificate for a child under 18.
• International documents: Every traveler, including an infant, needs a passport and any documents required by the destination or transit country. A passport card is not accepted for international air travel.
• Parental permission documents: When a minor travels internationally without both parents, authorities may request proof of the relationship and a consent letter from an absent parent or legal guardian.
• Medical clearance: An infant under 7 days old needs a doctor’s letter stating that the infant is medically cleared to travel. Contact Reservations before the trip.

American Airlines Lap Infant Requirements

American Airlines treats a child as an infant when the child is at least 2 days old and has not reached their second birthday. The infant must be under 2 for the entire itinerary to remain a lap infant.

• Only one infant may sit in the lap of each ticketed accompanying adult.
• The infant must be listed in the reservation even when no separate domestic fare is charged.
• An additional infant traveling with the same adult needs a purchased ticket and separate aircraft seat.
• If the child turns 2 during the trip, the child needs a purchased seat for all flights after the second birthday.
• An infant under 7 days old must be added through Reservations and requires medical clearance from a doctor.

American Airlines may request proof of age, such as a birth certificate. For international travel, infants require the same destination and transit documents as adult passengers. Review the current rules on the official American Airlines international travel page.

How to Add an Infant in Lap on American Airlines

The online process uses the Passenger details area of the reservation. The timing differs for domestic and international trips.

Domestic Flights, Including Puerto Rico

1. Go to aa.com and sign in to your AAdvantage account, or retrieve the trip with the passenger’s name and booking reference.
2. Open the reservation and go to Passenger details.
3. Select Add infant in lap.
4. Enter the infant’s legal name, date of birth, and any other requested information.
5. Review the information and confirm the change.
6. Open the reservation again and verify that the infant is listed with the correct accompanying adult.

No separate infant fare is normally charged for a lap infant on covered domestic American Airlines travel. The adult’s fare, baggage charges, and optional-service fees still apply.

International Flights

1. Book and ticket the accompanying adult’s trip first.
2. Retrieve the ticketed reservation on aa.com and open Passenger details.
3. Select Add infant in lap.
4. Enter the infant’s legal name exactly as it appears on the passport, along with the date of birth.
5. Review the infant fare, taxes, and surcharges. American’s agency ticketing guidance lists an international lap-infant fare of 10% of the applicable adult fare, plus applicable taxes and surcharges.
6. Complete payment and verify that an infant ticket has been issued.
7. Confirm that the infant’s name and travel documents match the itinerary before check-in.

American Airlines publishes the current process on its Traveling with children page.

What to Do If “Add Infant in Lap” Does Not Appear

The online option may not be available for every reservation. Contact American Airlines or the ticketing travel agency when:

• The infant is under 7 days old.
• The adult reservation has not been ticketed.
• A travel agency issued or controls the ticket.
• The itinerary includes a partner-operated or codeshare flight.
• The reservation was changed, rebooked, or split into separate booking references.
• The infant’s international ticket cannot be paid for or issued online.

Before ending the call, ask the representative to confirm that the infant is associated with the correct adult and appears on every applicable flight segment. For international travel, also confirm that an infant ticket number has been issued.

Safety on the Plane

American Airlines permits lap infants, but the FAA says the safest place for a child under 2 is in a purchased aircraft seat with an approved child restraint system. An adult may not be able to hold an infant securely during unexpected turbulence.

A lap infant may be permitted, but a properly installed, aircraft-approved child restraint in the child’s own seat provides better protection during turbulence.

Travel Documents and Partner Flights

Domestic Proof of Age

American Airlines may ask for proof of age for a child under 18. A birth certificate is commonly used for domestic travel. Bring the original or an acceptable copy that clearly shows the child’s date of birth.

International Documents

Every traveler, regardless of age, needs their own passport and any visas, permits, health documents, or transit documents required by the countries on the itinerary. Use the infant’s name exactly as it appears on the passport.

If the infant is traveling without both parents, immigration or border authorities may request proof of the relationship and a consent letter from an absent parent or legal guardian. Requirements vary by country.

Codeshare and Partner-Operated Flights

The rules of the airline operating the flight may apply to bassinets, baggage, infant fares, seat assignments, and child restraints. Check the operating carrier shown on the reservation, not only the American Airlines flight number. Contact American Airlines and the partner airline when their published policies differ.

Baggage, Strollers, Car Seats, and Feeding Supplies

• Diaper bag: American Airlines allows one carry-on diaper bag per child.
• Stroller and car seat: A stroller and a car seat may be checked free when traveling with a child. Both may be checked at the counter, or one may be checked at the gate and the other at the counter.
• Large strollers: Non-collapsible strollers and stroller wagons without built-in child safety straps must be checked at the ticket counter. Other strollers should normally be checked at the gate.
• International infant bag: An international lap infant with an issued ticket may receive one free checked bag through an airport agent. American lists a maximum of 25 pounds or 11 kilograms and dimensions of 22 by 14 by 9 inches.
• Breast pump and cooler: A breast pump and a small, soft-sided cooler of breast milk do not count as the adult’s carry-on or personal item.
• Formula and breast milk: TSA allows reasonable quantities of formula, breast milk, toddler drinks, baby food, and related cooling packs above the normal 3.4-ounce liquid limit. Tell the TSA officer and remove the items for separate screening.
• Easy-access supplies: Keep diapers, wipes, feeding supplies, medication, plastic bags, and clothing for both the infant and adult where you can reach them.

Review American’s current child-baggage information on the official Traveling with children page and TSA’s What Can I Bring? guidance before packing.

Cost and Benefits of Flying with a Lap Infant

The main benefit is avoiding the cost of a separate seat. On covered domestic American Airlines trips, a lap infant normally travels without a separate infant fare. You must still add the infant to the reservation, and normal charges for the adult’s bags, seat selection, or other services may apply.

For international travel, American’s agency guidance lists a lap-infant fare of 10% of the applicable adult fare, plus taxes and surcharges. The final total can differ based on the route, fare, cabin, currency, partner airline, and local taxes. Review the complete quote before paying.

Keeping the infant in your lap can make feeding and soothing easier, but it does not provide the protection of an approved restraint. A purchased seat costs more but lets you use an approved car seat or aviation restraint and is the option recommended by the FAA.

Common Challenges and How to Handle Them

• Tight space: Review the seat map before travel. A bulkhead does not guarantee a bassinet, and bassinet requests are handled at the gate on eligible aircraft.
• Ear pressure: Nursing, bottle-feeding, or offering a pacifier during takeoff and descent may encourage swallowing and ease pressure-related discomfort. Ask a healthcare professional for guidance if your infant has a recent ear infection, ear surgery, or another medical concern.
• Delays: Pack more diapers, formula, food, medication, and clothing than the scheduled travel time appears to require.
• Missing infant information: Check the reservation again after adding the infant. For international travel, confirm that an infant ticket was issued.
• Schedule changes: When American or a partner changes the itinerary, verify that the infant remains attached to every new flight segment.
• Traveling with two infants: One adult may hold only one lap infant. The second infant needs a purchased seat and an approved restraint unless another ticketed adult accompanies the second infant.

Pre-Departure Checklist

• Confirm that the infant appears on every flight in the reservation.
• Verify the infant’s legal name and date of birth.
• Confirm the international infant ticket number, when applicable.
• Pack proof of age and all passports, visas, consent letters, and destination documents.
• Check the operating airline’s policy for every codeshare segment.
• Confirm that a child restraint has the required aircraft-approval label.
• Ask at the gate about a bassinet when traveling on an eligible aircraft.
• Keep feeding supplies, diapers, medication, and spare clothing in an accessible bag.

Frequently Asked Questions

Final Thoughts

Adding a lap infant to an American Airlines reservation is usually straightforward when the adult ticket, infant information, and documents are ready. Domestic infants can be added during booking or after ticketing. International infants must be added after the adult ticket is issued and normally require their own infant ticket.

Add the infant early, verify every flight segment, and contact Reservations for newborns, partner flights, or missing online options. Bring proof of age and all international documents. Although lap travel can lower the fare, the FAA recommends buying a separate seat and using an approved child restraint whenever possible.

Related reading: Best carry-on luggage for international travel.