Case study: a child travel consent where the parents live apart

The situation

A parent sending a child abroad with a relative during the school break

The parents live apart, the mother cares for the child, and the child will travel with an aunt to visit relatives.

What actually blocked the file

• The consent carried one signature with no custody evidence attached.
• The accompanying adult and travel window were not stated.
• The child’s name spelling differed from the passport.

The sequence we ran

1. Collected the birth certificate, the child’s passport and the custody documents.
2. Drafted the consent naming the accompanying adult, destination and dates.
3. Aligned every name spelling with the passport.
4. Signed before the attorney and assembled a travel-day document pack.

Outcome

The child cleared check-in and immigration without further explanation.

What to prepare for a child travel consent letter

• The signer’s valid original passport or Thai ID card.
• Written confirmation from the receiving authority of which certification is required and whether onward legalisation is needed.
• The child’s birth certificate and a copy.
• Passports or ID cards of both parents.
• The child’s passport.
• A court order or custody agreement where the parents are divorced or separated.
• The parents’ marriage certificate or divorce certificate.
• A power of attorney and the agent’s ID, where a representative handles steps that legally permit representation.
• Any additional copies specifically required by the receiving authority in your case.

This list reflects the requirements published by the responsible authority on the verification date. Authorities may change their conditions, so confirm with the source before lodging. Lawyers Council of Thailand (Lawyers Act B.E. 2528, section 27) · 2026-08-16 · source

How a parental consent letter for a minor’s travel is notarised

1. Confirm with the receiving authority which certification is required — signature certification, certified true copy, or certification of facts — because the wording differs for each.
2. Check that the attorney is registered with the Lawyers Council as a Notarial Services Attorney and holds a verifiable registration number.
3. State the child’s name, date of birth, passport number, destination, travel dates and the accompanying guardian.
4. The parents holding custody sign before the attorney and present the child’s birth certificate.
5. Where a court order governs custody, attach that order or the relevant agreement.
6. The attorney signs, seals, and records the notarial registration number and date on the certification.
7. For overseas use, take the notarised document for legalisation at the Department of Consular Affairs and then, where required, at the destination country’s embassy or consulate.

The steps below are drawn from the procedures the responsible authority publishes itself, with the source and verification date shown. Some steps depend on the case and may change with the authority’s own announcements. Lawyers Council of Thailand (Lawyers Act B.E. 2528, section 27) · 2026-08-16 · source

Why a child travel consent draws further questions or refusal

Only one parent consents without custody evidence

Airlines and immigration checkpoints commonly expect consent from both parents; where only one signs, attach the court order or custody agreement.

The accompanying adult and travel window are not stated

The consent should name the accompanying adult, the destination country and the travel dates; without them officers commonly ask further questions or request a complete version.

The child’s details do not match the birth certificate or passport

The child’s name, date of birth and passport number must match the official records; mismatches should be corrected before the travel date.

The document was signed before meeting the attorney

Signature certification confirms that the signer signed in the attorney’s presence. If the document arrives pre-signed, the attorney will ask for a fresh copy to be signed in person.

Identity document is expired or presented only as a copy

Identity verification requires a valid original passport or ID card. A copy or an expired document is not sufficient, and the certification waits until a valid original is produced.

The certificate wording does not match what the destination prescribes

Many receiving bodies prescribe their own certificate wording. Generic wording is commonly returned with a request to re-execute using the prescribed form.

The document still contains blanks or unfilled fields

The attorney certifies the document as it stands at that moment. Blanks that could be completed later should be filled in, or struck through, before signing.

Lawyers Council of Thailand (Lawyers Act B.E. 2528, section 27) · 2026-08-16 · source

What to watch next time

• Custody evidence matters as much as the consent itself.
• Always name the accompanying adult and the travel window.
• Carry a certified copy set on the travel day.

Questions this case raises

What if the other parent will not consent?

That is a custody question. Take legal advice on the court route rather than relying on a one-sided consent with no supporting order.

Does the consent need translating?

If the destination or airline works in another language, use a bilingual version or attach a translation.

Related reading

• Case study: certifying a Thai power of attorney for property abroad
• Case study: a single-status declaration for marrying abroad
• Case study: swearing an affidavit of single status for a marriage abroad
• Case study: certified passport copies for an overseas institution
• Certified translation
• Consular legalization