International Minor Travel Rules (2026)

Quick Answer

Most major airlines allow children to fly internationally alone using their UM service. You’ll need a valid passport, the airline’s UM form, and often a notarized parental consent letter. Requirements vary significantly by destination country — always check both the airline’s policy and the destination country’s immigration rules well in advance.

Essential Documents for International UM Travel

Always Required

• Valid passport (check expiration — many countries require 6+ months validity)
• Completed airline UM form with all contact details
• Photo ID or birth certificate for domestic check-in
• Contact information for drop-off and pick-up adults

Often Required

• Notarized parental consent letter (both parents’ signatures)
• Visa for destination country (if applicable)
• Court custody documents (for single-parent families)
• Travel insurance documentation
• Medical information / allergy cards

Airlines Offering International UM Service

Country-Specific Requirements

Some countries have strict additional requirements for minors traveling alone. Here are the most important ones to know:

Brazil

Requires a notarized authorization from both parents, authenticated by a Brazilian consulate. Children under 16 need a court order if traveling without both parents’ consent.

South Africa

Requires an unabridged birth certificate, parental consent affidavit, and copies of parents’ passports. Rules are strictly enforced at entry.

Mexico

Children traveling alone or with one parent need a notarized permission letter from the absent parent(s). Mexican immigration may request this at departure.

European Union (Schengen)

Requirements vary by country. Generally, a notarized consent letter is recommended. Some countries require it to be translated into the local language.

United Kingdom

No specific consent letter requirement for entry, but airlines may require one. Border officers may question unaccompanied minors.

Canada

Recommends a consent letter from non-traveling parents. Not legally required but strongly advised — border officers may request it.

Important: Country requirements change frequently. Always verify current rules with the destination country’s embassy or consulate before travel.

Frequently Asked Questions

Can a child fly alone internationally?

Yes, most full-service airlines allow unaccompanied minors on international flights. However, not all carriers offer international UM service — some domestic-focused airlines may not support it. Confirm international UM availability directly with your airline before booking.

What documents does a child need to fly internationally alone?

At minimum: a valid passport, the airline’s completed UM form, and contact details for both drop-off and pick-up adults. Many countries also require a notarized parental consent letter. Some destinations require visa documentation.

Do both parents need to sign for a child to fly internationally alone?

Requirements vary by country. Many countries require a notarized consent letter signed by both parents (or the non-traveling parent). Some countries like Brazil and South Africa have strict requirements. Always check destination country rules.

What age can a child fly internationally alone?

Most airlines accept international UMs starting at age 5 or 8, depending on the carrier and route. Some airlines restrict younger children (5-7) to nonstop international flights only.

Is it more expensive for a child to fly alone internationally?

Some airlines charge the same UM fee for domestic and international flights, while others charge more for international routes. Additional costs may include passport fees and notarization of consent letters. Confirm current international UM fees directly with your airline.