Jet2 has warned passengers with children under the age of 18 to be aware of an important entry requirement in Portugal

A Jet2 flightJet2 has warned passengers with children under the age of 18 to be aware of an important entry requirement in Portugal (Image: Andrew Teebay / Liverpool Echo)

Jet2 has issued an important travel warning to passengers with children under the age of 18 who are looking to fly to Portugal.

Young travellers looking to jet off with their friends to celebrate a milestone birthday or even A-level results may be disappointed if they do not take note of the airline’s policy upon reaching Portugal.

The airline has strict guidance regarding those travelling under the age of 18 to Portugal, including Madeira, which states minors must have a signed letter of authorisation to be able to enter and leave the country without their parent or guardian.

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It states: “Young people under the age of 18 are required to have a letter of authorisation with them when leaving or entering Portugal, including Madeira, without their parent or legal guardian.

“This letter must be signed by the parent or legal guardian and contain accurate detail confirming the young person’s temporary address and the responsible person’s contact information, while in destination.

“To avoid delays at the border, we recommend a copy of the signatories’ (parent or legal guardian) photo identification is carried with the young person for verification purposes, by the authorities at the Portuguese border.”

Jet2 added those who reside or are nationals of Portugal under the age of 18 may also require an authorisation letter when leaving Portugal “to be legally certified prior to departure.”

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Generally, the airline permits those aged 14 or over to travel alone, and do not offer an ‘unaccompanied minors’ service.

Children under 14 must be accompanied by a person aged 16 or over who is happy to take responsibility for them.

Jet2 said: “Jet2.com allows passengers aged 14 or over to travel alone.

“Any passenger under the age of 14 can only travel if accompanied by a passenger aged 16 years or over who will take full responsibility for them.

“We are unable to offer an ‘Unaccompanied Minors’ service.

“Some countries impose special conditions for minors who are travelling either alone, or without their legal parent/guardian.”