Does a baby need a passport to fly internationally?

Yes. Every US citizen needs a passport for international air travel, including newborns. For children under 16, the application is made in person with the child present, and both parents normally need to appear or the absent parent provides a notarized statement of consent (Form DS-3053). Passports for children under 16 are valid for 5 years.

Can I use my American car seat in another country?

Not always. The CDC notes that a US car seat may not be approved for use abroad, and many countries require seats certified to UN Regulation R44 or R129. Check your destination's rules before you travel; if your seat is not legal there, rent or buy a locally approved seat and inspect it carefully.

How do I keep my toddler safe from contaminated water abroad?

Where tap water is unsafe, the CDC advises bottled, canned or hot drinks, pasteurized milk only, and safe water for preparing formula and cleaning bottles. Skip ice unless it is made from safe water, choose food served hot, and peel fruit yourself. Oral rehydration salts help prevent dehydration if diarrhea starts.

Do I need a consent letter if I travel abroad with my child alone?

It is strongly recommended. Some countries and airlines ask a parent traveling alone with a child for a signed letter of consent from the other parent, including travel dates and destinations, ideally notarized, with a copy of the other parent's ID. A birth certificate also helps show your relationship to the child.

International Travel With a Toddler (2026)

Q: When should I see a doctor before traveling abroad with a toddler?

The CDC recommends an appointment with your child's pediatrician or a travel medicine specialist at least one month before you leave. Some travel vaccines can be given on an accelerated schedule, but not all can be given to very young children. For example, the CDC says infants 6 to 11 months should get one dose of MMR before international travel.

International travel with a toddler mostly comes down to starting earlier than you would alone. Every US citizen child needs their own passport, and for children under 16 both parents normally have to consent in person. Book a pediatric travel health visit at least a month before you leave, as the CDC advises, because some vaccines are given early for travel and some cannot be given to very young children. Then plan for food and water, car seats (a US seat may not be approved abroad), jet lag and medical care.

Planning timeline

3–6 months out: passports, travel insurance, flights and accommodation.
At least 1 month out: travel health visit with your pediatrician or a travel clinic.
2–4 weeks out: car seat plan, health kit, copies of documents, phone plan.
Day before: carry-on with a full extra day of supplies in case bags are delayed.

Does a baby need a passport to travel internationally?

Yes. Every US citizen needs a passport for international air travel, including newborns. For a child under 16, the application is made in person with the child present, and both parents or guardians normally need to appear; if one cannot, they usually submit a notarized statement of consent (Form DS-3053). You will need proof of citizenship (typically the certified birth certificate), proof of the parental relationship, parents' ID and a passport photo of the child on a plain white background.

Passports for children under 16 are valid for 5 years. Processing times and fees change, so check the State Department's current figures and apply early. Many countries require passports to be valid for several months beyond your travel dates; check your destination's entry rules for every family member, including visas or electronic travel authorizations.

What other documents should you carry?

Birth certificate (certified copy): useful as proof of parentage, especially if your child has a different last name.
Consent letter if one parent is traveling alone with the child: a signed (ideally notarized) letter from the other parent with travel dates and destinations, plus a copy of their ID. Some countries and airlines ask for it. The State Department's page on traveling with children covers this.
Medical information: immunization record, prescriptions and a pediatrician's letter for any condition or medication.
Insurance policy number and assistance phone line, printed.
Copies of all documents stored separately from the originals, plus photos on your phone.

The State Department's Smart Traveler Enrollment Program (STEP) lets the nearest US embassy contact you in an emergency.

Which vaccines does a toddler need before traveling abroad?

That depends on your child's age and where you are going, so book a visit with your pediatrician or a travel medicine clinic at least a month before departure; the CDC's Traveling with Children page notes that some travel vaccines can be given on an accelerated schedule, but not all can be given to very young children.

Key points from the CDC:

Routine vaccines should be up to date.
MMR: infants 6 to 11 months should get one dose before international travel; this early dose does not replace the routine doses later.
Destination vaccines and malaria prevention: check the CDC destination pages for your itinerary. Children traveling to malaria-risk areas should take prevention medicine, and the drugs should be stored in childproof containers.

Age limits for vaccines such as typhoid and yellow fever vary, so ask your travel clinic which apply to your child. Where a vaccine cannot be given, food, water and mosquito precautions carry more weight.

What should be in an international travel health kit for a toddler?

Children's acetaminophen and ibuprofen (ibuprofen is not for babies under 6 months), with the dosing device and your child's current weight noted
Oral rehydration salts
A thermometer
Any prescription medicines in original labeled containers, plus a doctor's letter
Repellent suitable for your child's age; the CDC says not to use oil of lemon eucalyptus or PMD on children under 3, to keep repellent off hands, eyes and mouth, and to apply sunscreen first
Sunscreen, hydrocortisone cream, bandages and antiseptic wipes
Saline drops

Bring enough of every medicine for the whole trip plus a few days. Children's medicines abroad can have different strengths and names, so ask your pediatrician before buying locally. The CDC advises against giving children bismuth products (such as Pepto-Bismol) and says loperamide is not recommended under age 6. A compact kit like the KeepGoing travel first aid kit covers basic supplies; our toddler travel first aid kit guide lists the rest.

Is the water safe for a toddler abroad?

Check the CDC destination page for your country. Where tap water is not safe, the CDC's food and water guidance and its children's page advise:

Drink bottled, canned or hot drinks, and only pasteurized milk.
Use safe water (sealed bottled, or boiled and cooled) to prepare formula and to clean bottles.
Skip ice unless you know it was made with safe water.
Choose food that is served hot, or that is dry or packaged; peel fruit yourself after washing it in safe water.
Brush teeth with safe water.

The CDC says the best treatment for a child with diarrhea is plenty of fluids, and oral rehydration salts can prevent dehydration. Get medical care right away for signs of dehydration, a fever or bloody stools. Our feeding a toddler while traveling guide covers snacks and formula logistics.

Can I use my US car seat abroad?

Possibly not. The CDC notes that a US car seat may not be approved for use in another country, and advises researching the rules for your destination. Many countries require seats certified to UN Regulation R44 or R129. Children are generally safest in the back seat.

Your options:

Bring your own seat if it is legal at your destination; if it carries the US aircraft label, your child can use it on the plane too. See our airline car seat rules guide.
Rent or buy locally if you need a locally approved seat. Inspect rental seats as described in our car seats in rental cars guide.
Taxis: rules differ by country. A child is safer in a car seat than on a lap in any vehicle. The CARES airplane harness is certified for aircraft only and is not a car restraint.

How do you get through international airports with a toddler?

Passport control: lines can be long; some airports have family or priority lanes, so look for signs or ask staff. Officers may ask about your relationship to your child, which is why the consent letter and birth certificate help.

Customs: declare formula, baby food and medicines if asked. Most countries allow reasonable personal quantities; sealed commercial packaging is easiest. Rules on meat and dairy products vary by country.

Connections: allow more time than the minimum, especially if you must clear immigration or security again. A compact travel stroller such as the gb Pockit Air (about 10 lb) or a baby carrier speeds up long terminal walks.

Long flights: see our flying with a toddler guide and keeping a toddler entertained on a plane.

How do you handle jet lag with a toddler?

For short trips of a few days, it can be easier to keep your child roughly on home time. For longer trips, shift gradually: move bedtime earlier (eastbound) or later (westbound) in small steps for a few days before departure, then on arrival get outside in morning daylight, eat on local time and protect naps without letting them run long. Expect a few rough nights. Do not give melatonin or any sleep aid without your pediatrician's advice. Our toddler jet lag guide has day-by-day plans.

Do you need travel insurance for a toddler abroad?

Usually, yes. Many US health plans offer limited or no coverage abroad; check yours. When comparing travel medical policies, look for:

Emergency medical coverage and medical evacuation coverage, with limits suited to your destination
A 24/7 assistance line that can find English-speaking care
Trip cancellation and interruption cover (children get sick)
How pre-existing conditions are handled; some policies require purchase soon after booking

What if your child needs a doctor abroad?

Before you go, note the nearest hospital to each place you stay, the local emergency number (112 across the EU, 999 in the UK), and the nearest US embassy or consulate, which keeps lists of local doctors. In an emergency, go straight to emergency care; otherwise call your insurer's assistance line first, which can direct you to providers and sometimes arrange payment. Bring your child's records and keep every receipt. If your child gets sick after you return, especially with a fever, tell the doctor where you traveled, as the CDC advises.

If a passport is lost or stolen, file a police report and contact the nearest US embassy or consulate, which can issue an emergency passport. Copies of the originals speed this up.

What gear should you bring vs buy there?

Bring:

Car seat (if legal at your destination) and a compact stroller or carrier for cobblestones, stairs and transit
Enough diapers for travel days plus a couple of days; sizes and brands differ
All formula or specialty food if your child depends on a specific product
All medicines
A universal travel adapter (for example, the TESSAN universal adapter), and a voltage converter for anything that is not dual-voltage (check sound machines and bottle warmers)
A portable changing pad; changing tables are scarce in some countries

Consider renting or borrowing: cribs (request one at booking or bring a light playard like the Munchkin Ultra-Lite), high chairs and beach gear. Our renting vs bringing gear guide breaks this down, and packing cubes help fit it all in.

Wherever you stay, run the hotel room baby proofing checklist. Outlet shapes differ abroad, so push-in outlet covers from home may not fit; strap locks and door locks travel better.

How do you plan an itinerary with a toddler?

Plan one main activity a day and leave room for naps, playgrounds and meals. A rental apartment with a kitchen and washing machine often suits longer stays; a hotel offers cribs, housekeeping and a front desk. For a first trip abroad, a short flight, a small time difference and a familiar language reduce the number of new variables.

Expect differences in public life: in some places strangers will touch or talk to your child; elsewhere quiet is expected in restaurants. Family-friendly restaurants, early meals and a quiet activity kit work almost anywhere.

International travel checklist

How we assessed this: This guide is based on CDC travelers' health guidance (checked October 2026), the State Department's published requirements for child passports and the specifications of the products mentioned. Requirements change; check official sources for your destination before you travel.