Give every child their own row on the travel checklist. The adult’s passport, visa or surname does not automatically answer the child’s document questions. Citizenship, age, route and accompanying adult all matter. Starting early also leaves time to obtain consent, proof of relationship or a first passport without turning the final week into a paperwork chase.
Does a child need their own passport?
For international flights, plan on each child having their own valid passport unless an official authority confirms a specific alternative. Check the issuing country’s application process: a first passport for a minor may involve consent from parents or guardians, proof of relationship and an in-person appointment. A child’s passport can have a shorter validity period than an adult’s. Check its expiry date on its own rather than assuming it matches the parent’s.
If your trip involves land or sea crossings, some countries have age-related document exceptions. Those exceptions do not necessarily cover flying home after a change of plans. Our cruise document guide explains why a ship itinerary deserves a separate check. Verify each country’s actual rule before relying on an exception.
When the child travels with one parent or another adult
Border officials may ask for evidence that the accompanying adult has authority to travel with the child, particularly when the child is with one parent, a grandparent, a teacher or another guardian. A consent letter can help explain the arrangements, but whether one is required, who must sign and whether it must be notarised varies by country and situation. Do not treat a generic internet template as proof that your route is covered.
Check both the departure and destination authorities, plus any transit country and airline. Ask what they require if one parent is absent, there is a sole-custody order, one parent has died, or the child travels unaccompanied. Keep the applicable custody, adoption or guardianship documents accessible if relevant. Do not post a child’s birth certificate, court order or passport number publicly while seeking advice.
The EU’s travel documents for minors guidance explains that EU countries set their own rules for children travelling alone, with one parent or with adults who are not legal guardians. It also recommends checking airlines, which may have their own forms.
Different surnames and different passports
A different surname does not itself mean you cannot travel together, but you may need to show the relationship. Bring the documents the relevant authorities request, such as a birth certificate or a legal name-change record. If the child has dual citizenship or a residence permit, confirm which passport to use at entry and exit and whether the residence document is linked to a particular passport. Rules can differ on each side of the journey.
Ensure every ticket matches the child’s actual travel document. If the child receives a replacement passport after an electronic authorisation was issued, check whether a fresh authorisation is necessary. Do this before the airline check-in window opens, when there is still time to correct a booking.
A family document checklist
- Check each traveller’s passport, expiry date, physical condition and name on the ticket.
- Check destination and transit-country visa or electronic-authorisation rules for each nationality.
- Confirm whether the child needs a consent letter, legal-order copy or proof of relationship for this exact route.
- Ask the airline about its minor-travel and unaccompanied-minor policies, including any age limits or forms.
- Carry the originals and any required translations in a safe place; keep secure copies separately in case something is lost.
Pack for the question, not only the rule
A border officer may simply need to understand why the child is travelling with you. Keep the relevant documents together and easy to reach rather than buried in checked luggage. If a consent letter names specific dates or companions, read it again after any itinerary change; a perfectly prepared document can become unhelpful when the trip no longer matches it.
Our travel readiness checker can help you review passport dates and trip details, but it cannot decide whether a custody order or consent document is legally sufficient. Consult the official border or consular authority for every country involved, then recheck if the child’s companions or itinerary change.
Passports and validity rules for children
Children need their own passports in almost every case — being listed on a parent's passport is largely a thing of the past. Child passports also tend to have shorter validity, often five years instead of ten, so a document that feels recent can be closer to expiry than you expect. Apply the same destination validity rules to each child's passport as to your own: many countries require six months of validity beyond arrival, and the Schengen area requires three months beyond departure. Check every passport in the family against the destination's rule, not just the adults'.
Allow extra time for child applications. Because both parents' consent is often required, gathering signatures and documents can take longer than the processing itself. If one parent cannot attend or sign, the passport agency will explain what alternative evidence it accepts — check those requirements early, because they are strict and deliberately so.
At the border with children
Border officers may ask children simple questions — who they are travelling with, where they are going — even quite young ones. Prepare children for this so it does not frighten them, and keep the family together at the desk unless directed otherwise. Carry your documents in one folder you can hand over in order: passports first, then consent letters, then bookings. A calm, organised two minutes at the desk sets the tone for the whole arrival.