Start with the custody order
If there is a court order, read it first. Some orders give one parent sole legal custody. Others require both parents to agree to international travel, or set rules on notice, passports and itineraries. Following the order protects you from accusations later.
If you are unsure how the order applies, ask the attorney who helped you, or the court's self-help center.
Even without an order, practical risk exists. An officer who sees a child traveling with one parent and a different surname may ask more questions, so documents help.
When the other parent agrees
Ask in writing, early, and include the dates, destination, flight details and contact information. If they agree, have them sign a consent letter before a notary. The notary needs the parent present with valid ID, in person or through a lawful remote process.
Keep a copy of the signed letter and the email thread.
Offer the other parent a copy of the itinerary, a phone number and a return date. It builds trust and may speed a signature.
When the other parent cannot be found or will not respond
This is a legal problem, not a notary problem. A notary cannot sign for the missing parent or accept a consent that has not been signed by that person. Talk with an attorney about options, which may include seeking a court order.
Do not forge or copy signatures. Doing so can lead to serious consequences.
Documents to carry
Bring the child's passport, the notarized consent, a copy of the custody order if there is one, and a copy of the other parent's ID. If you share a surname with the child, you may still be asked about parentage, so carry a birth certificate showing both parents.
If you have a different surname, a marriage or name change document may help.
Some parents also carry a copy of the divorce decree or a letter from an attorney, especially for long trips or travel to places with extra scrutiny.
Safety and communication
Share the itinerary with the other parent and be reachable during the trip. Good communication reduces suspicion and conflict. If you believe the other parent might not return the child, talk to an attorney about preventive steps, such as enrolling in programs that flag passport applications.
Airlines and border officers vary in how closely they check. Do not rely on luck.
Working with a notary
Book the notary appointment well before the trip. Make sure both the letter and the IDs are ready. If the other parent lives far away, a remote notarization or a notary near them can work, as long as the destination accepts it.
If the other parent works nights or lives in another state, ask the notary about flexible times or a travel option so the signing does not hold up the trip.
Common questions
Do I need a letter if I have sole custody?
Having the custody order with you can help more than a letter. Some destinations still prefer a letter.
Can a notary decide whether the letter is legally enough?
No. A notary only confirms identity and signing. Questions about legal sufficiency belong with an attorney.
This guide is general information, not legal advice. Fees and procedures change; check with the office involved or an attorney for your situation.