Can you fly alone at 18 internationally?

Generally, a person must be at least 18 years old to travel internationally without a parent or legal guardian. That said, there is no one-size-fits-all answer and you should always check with your destination country's government before booking a trip.



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Any persons under 18 travelling without their parents or guardian are required to present an international travel permission declaration form signed by their father, mother or guardian at the check-in desks.

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Unaccompanied minor flights are given by United Airlines to minors ages 5 to 14 who are traveling alone and are not accompanied by a family member or a known person. Children aged 15 to 17 are permitted to travel alone, however, the option to go as an unaccompanied minor is also accessible.

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All children and youth under 18 arriving alone in Italy, without their families or an adult legally responsible for them, have the right to stay in the country and cannot be sent back to their own or another country.

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Lap children between the ages of 6 to 36 months can travel onboard in car seats. Further, if you prefer this option, you have to pay full fare for that particular seat for the baby, irrespective of the baby's age.

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Any persons under 18 travelling without their parents or guardian are required to present an international travel permission declaration form signed by their father, mother or guardian at the check-in desks.

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Some travel companies may allow you to book a holiday at a different age than what you are, as long as you are at least 18 years old on the day of travel. However, other companies may have stricter policies and require you to be the age you booked the holiday at on the day of travel.

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To help prevent child trafficking, all young people under the age of 18 travelling to the United Arab Emirates (UAE) now need authorisation from their parent or legal guardian to travel. This is important, as you won't be able to fly without it, even if you're travelling with another family member or friend.

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Adult children who are 18 and over must have their own TSA PreCheck membership. Do children need TSA PreCheck? No, TSA PreCheck for a minor child is not required, as long as they are flying on the same itinerary with an eligible adult who has their own TSA PreCheck membership.

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Minors (under age 18) traveling internationally without one or both parents may be required to present a letter of consent signed by any/all non-traveling parents.

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Children under 12 years of age must be accompanied by an adult aged 16 or over or use the unaccompanied minor service if the child is 5 or older. One adult can accompany a single infant (a passenger up to the age of 2).

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Passengers 75 and older can receive some form of expedited screening through risk-based intelligence-driven security that allows TSA to better focus resources on passengers who more likely pose a risk.

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Bottom line: You're never too old to travel.

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Children traveling outside the U.S. Children under 18 may need a Letter of Consent to travel internationally without both parents.

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