Flying Internationally With a Child With One Parent: Consent & Document Guide

This is a summary of the current published rule. Confirm it on the airline’s own page before you travel.

This page is for parents asking: I'm flying with my child and the other parent isn't coming. Do I need a notarized letter? We're going on vacation without the other parent. Can one parent fly internationally with a child? What if the other parent is overseas, I have sole custody, or the other parent is deceased?

If you are already at the airport, start with the Airport Emergency Child Travel Consent Guide.

American Airlines: an international child traveling without both parents may be required to carry relationship evidence and a Letter of Consent. See American Airlines child travel consent.

Delta Air Lines: country-specific rules control. Do not turn individual destination rules into a universal Delta requirement. See Delta child travel consent.

United Airlines: destination-driven through the Travel-Ready Center. No general United parental-consent form has been established.

Southwest Airlines: destination documentation controls; some countries require additional child documents. Unaccompanied Minor and Young Traveler international restrictions are carrier service rules, not one-parent consent letters.

Alaska Airlines: destination-driven. International document verification does not replace carrying physical travel documents.

JetBlue: Unaccompanied Minor paperwork is not the same as ordinary one-parent consent. See UM form vs parental consent.

Frontier Airlines: Canada-specific one-parent authorization requirements are detailed and should be used only for Canada itineraries. See Frontier Canada.

Hawaiian Airlines: the current combined contract says additional documentation may be required for minors traveling with only one parent in applicable international situations, because some countries require special documents. Contact the destination consulate. No Hawaiian standalone article in this wave.

Allegiant: no useful universal parental-consent carrier rule identified. Companion-age rules are not consent letters.

Sun Country Airlines: the carrier rule concerns who may travel internationally unaccompanied, not a general one-parent consent letter.

Air Canada: some countries may require an absent-parent letter; current guidance explains how such letters are signed. See Air Canada child travel consent.

Destination entry and exit rules often control one-parent travel even when the airline has no branded form. A different surname, dual nationality, or residency can change what a border officer asks for.

Compare destination rows in the Family Travel Center. This wave does not publish standalone destination articles.

Conditional. One parent can often fly internationally with a child, but “often” is not “never asked for documents.” Sole custody, a deceased parent, or a parent abroad can change the supporting papers, not the fact that airline and destination rules remain separate.

Ordinary one-parent travel is not Unaccompanied Minor service. Complete a UM form only if the child is actually flying under that airline program.

Where a parental letter is required, the non-traveling parent or legal guardian is the usual signer. Sole custody paperwork, a death certificate, or a court order may replace an absent-parent signature when that is what the destination or carrier actually accepts.

A parent who is overseas can still be the required signer. Remote online notarization may help only if the document requires notarization, the signer is eligible, and the recipient accepts that format.

Notarization is not a universal one-parent airline rule. Frontier's Canada authorization letters do not currently state a blanket notarization requirement. American's Letter of Consent is conditional and not stated as universally notarized.

Start online notarization only if the actual required document calls for notarization. Airline policy does not automatically create a notary CTA.

Some destinations and some airline stations still want paper originals or copies of ID. Confirm format before relying on a phone photo or an electronic notarization printout.

SOLE CUSTODY: a custody order or a birth certificate identifying one parent may be what Frontier's Canada guidance and some destinations look for. That does not automatically satisfy every airline. See traveling with sole custody.

DECEASED PARENT: a death certificate is a common supporting document. It is not a parental consent letter, and it is not a passport. See traveling when the other parent is deceased.

DIFFERENT SURNAME: relationship evidence such as a birth certificate may be requested. A different surname is not itself proof that consent is missing. See parent and child have different last names.

PARENT ABROAD: the absent parent may still need to sign. That is a signer-location problem, not a reason to notarize a passport form as a boarding document. See other parent is abroad. If the task is consent for a child's U.S. passport, see Form DS-3053. If a generic letter is actually the correct document, see the one-parent sample.

Citizenship, dual nationality, and residency can change which destination entry or exit rule applies. An airline boarding rule does not replace those government rules.

Already at the airport, leaving today, or holding a form the airline just handed you? Identify the exact missing document first. Use the Airport Emergency Child Travel Consent Guide.

Check the official page again before you travel.