Do I Need Authorization to Travel With My Child?

You need written authorization to travel with a child any time the child crosses an international border without both parents present. In practice that means a signed, notarized consent letter from the non-traveling parent, or from both parents if the adult traveling with the child is not a parent. The U.S. Department of State recommends carrying one whenever a child travels internationally with only one parent or with a non-parent, and some destination countries make it a legal condition of entry.¹²

Arriving at a border without the right paperwork can mean extended questioning or being turned back. The rules exist to prevent international child abduction, and agents in many countries are trained to look for signs that a child is being taken across a border without proper authorization.

When You Need a Consent Letter

The default rule is simple: if both parents are not with the child at the border, carry a letter. That covers a parent traveling alone with a child, a child traveling with a grandparent or coach or family friend, and a child flying alone as an unaccompanied minor to meet a relative abroad. When the traveling adult is not a parent, both parents should sign.¹

Domestic trips are a different matter. No federal law requires a consent letter for travel inside the United States, but carrying one can prevent trouble if an airline, hotel, or emergency room questions who has authority over the child.

What the Letter Should Contain

USAGov recommends the letter be in English, notarized, and include a clear statement of permission such as: “I acknowledge that my child is traveling outside the country with [name of the adult] with my permission.”³

Around that core sentence, include enough detail that a border agent can verify the trip quickly:

The child’s full legal name, date of birth, and passport number.
The traveling adult’s full name and relationship to the child.
The non-traveling parent’s full name, phone number, and address so authorities can call to confirm.
Departure and return dates, destination addresses, and flight numbers if you have them.
The non-traveling parent’s notarized signature, or both parents’ notarized signatures if the child is traveling with a non-parent.

Notary fees for a signature typically run $5 to $10, though some states charge up to $25.

Custody and Consent

Sole Custody

A parent with sole legal custody generally does not need the other parent’s consent to travel with the child. Carry a certified copy of the court order granting sole custody so you can show it if an agent asks.¹ If the other parent is deceased, a copy of the death certificate serves the same purpose.

Joint Custody

Joint legal custody means both parents share decision-making authority, and international travel counts as a major decision. The traveling parent needs a signed consent letter from the other parent. If the other parent refuses, the only lawful option is to petition a court for permission to travel. Leaving the country without consent or a court order can create serious legal exposure.

If the other parent cannot be located, a court can authorize the trip once the traveling parent shows reasonable efforts to find them.

Country-Specific Rules

The consent letter is “recommended” under U.S. guidance, but some destination countries treat it as a legal requirement. Checking with the embassy or consulate of the destination country before the trip is the single most useful step.²

Brazil is a strict example. Under Brazil’s National Justice Council Resolution No. 131/11, any Brazilian minor leaving the country with only one parent must have a travel authorization signed by both parents. If the non-traveling parent cannot appear at a consulate in person, that signature must be notarized and then apostilled.⁴ South Africa and Mexico have similarly firm documentation rules. The requirements vary enough that no single letter template works everywhere.

Two questions to answer with the consulate: does the country require an apostille (an extra layer of authentication that makes the notarization valid internationally), and does it require a certified translation into the local language? The U.S. recommends the letter be in English, but a translation may prevent delays where English is not the working language.³

Medical Authorization Is a Separate Document

A consent letter gets a child across a border. It does not give the traveling adult authority to make medical decisions. If a grandparent or family friend is traveling with your child and the child gets sick or injured, a hospital may refuse non-emergency treatment without consent from a legally authorized parent or guardian.

A separate medical authorization form solves this. Include the child’s full name and date of birth, known allergies, current medications, insurance information with a copy of the card, the primary physician’s name and phone number, and a clear statement authorizing the traveling adult to consent to medical treatment. Both parents should sign, and notarization adds weight. Some pediatric offices have their own standard form.

Passports and Identity Documents

Every child needs their own valid U.S. passport for international air travel, regardless of age.³ Applying for a passport for a child under 16 requires both parents or legal guardians to appear in person with the child. If one parent cannot attend, the absent parent must complete Form DS-3053 (Statement of Consent) before a notary and provide a photocopy of the ID shown to the notary.⁵ The passport book fee for a child is $100, plus a $35 acceptance facility fee, for a total of $135.⁶ The two-parent requirement is itself an anti-abduction measure.

By land or sea, children under 16 returning to the United States from Canada, Mexico, or the Caribbean can present an original or copy of their birth certificate instead of a passport. Children under 19 traveling with a school, religious, or youth group qualify for the same exception. Air travel to Canada or Mexico still requires a passport, with no birth certificate alternative.⁷³

Expect questions at the border if you and your child have different last names. A birth certificate shows the parent-child relationship directly.¹ If your name has changed due to marriage or divorce, carry the certificate or decree that connects your current name to the name on the child’s documents. Adoption decrees do the same work for adoptive parents.

Airline Rules Are Not the Same as Border Rules

Airlines set their own policies for children flying without a parent, and those policies are separate from what a border officer will require. Most major carriers require enrollment in an unaccompanied minor program for children roughly ages 5 to 14, with fees around $150 each way. Children under 5 generally cannot fly without an accompanying adult.⁸ An airline letting a teenager board an international flight does not mean the destination country will let them enter without a consent letter. Clear both hurdles before the travel date.

Why the Paperwork Is Taken Seriously

International parental abduction is a federal crime. Under 18 U.S.C. § 1204, removing a child from the United States or keeping a child outside the country with intent to interfere with the other parent’s custody rights carries a penalty of up to three years in prison. The law applies to children under 16 and covers custody or visitation rights arising from a court order or a legally binding agreement.⁹

On the international side, the Hague Convention on the Civil Aspects of International Child Abduction provides a framework for returning children wrongfully taken across borders to their country of habitual residence. The United States ratified it in 1988.¹⁰¹¹ Recovery becomes much harder when a child is taken to a country that is not a party. That is the reason a properly signed and notarized letter matters before the trip, not after.

1
U.S. Department of State. Travel With Minors
2
U.S. Customs and Border Protection. Children Traveling to Another Country Without Their Parents
3
USAGov. International Travel Documents for Children
4
Governo Federal. Travel Authorisation for Brazilian Minor Children
5
U.S. Department of State. Apply for a Child’s Passport Under 16
6
U.S. Department of State. Passport Fees
7
U.S. Customs and Border Protection. Western Hemisphere Travel Initiative (WHTI) Frequently Asked Questions
8
Department of Transportation. When Kids Fly Alone
9
Office of the Law Revision Counsel. 18 U.S. Code 1204 – International Parental Kidnapping
10
HCCH. Convention of 25 October 1980 – Status Table
11
HCCH. Child Abduction Section