
When it comes to air travel, having the right documentation is essential, especially when travelling with children. While birth certificates are not considered valid identification for international flights, they can be used as proof of age for infants and children under the age of 2 travelling as lap children. In some cases, a birth certificate may be used as supporting evidence for domestic travel if the original ID has been lost or stolen. It is always recommended to carry a copy of your child's birth certificate, especially when travelling abroad, as it can be useful in various legal and official situations. However, it is important to note that specific requirements may vary depending on the airline and destination, so it is crucial to check these details in advance to ensure a smooth travel experience.
| Characteristics | Values |
|---|---|
| Can a birth certificate be used as a primary document for flying domestically? | No |
| Can a birth certificate be used as a primary document for flying internationally? | No |
| Can a birth certificate be used as supporting evidence for flying domestically? | Yes, if your original identification was lost or stolen |
| Can a birth certificate be used as supporting evidence for flying internationally? | No |
| Can a birth certificate be used as proof of age for babies who are flying? | Yes |
| Can a birth certificate be used to obtain a passport? | Yes |
| Can a birth certificate be used as identification when travelling with children? | Yes |
| Can a birth certificate be used as identification when travelling without children? | No |
| Can a birth certificate be used as identification when travelling within the same country? | No |
| Can a birth certificate be used as identification when travelling to another state? | Yes |
| Can a birth certificate be used as identification when travelling to another country? | Yes |
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What You'll Learn

Domestic travel with children under two
While a birth certificate is not required for minors for domestic travel in the US, it is recommended to carry one for children under the age of two. This is because children under two can fly for free within the US as a lap child, and airlines may request proof of age at check-in. A birth certificate or other state-issued ID is acceptable proof of age for travelling within the US.
If your child is under two and flying as a lap child, some airlines may be more lenient than others, but it is always best to be prepared. For example, Southwest Airlines always requires a copy of the birth certificate or government-issued photo ID at check-in. If your child turns two during the trip, you will be required to pay for a full-priced, round-trip ticket.
If you are travelling with a baby less than two weeks old, you might need a note from your doctor stating that the baby is healthy enough to fly. It is a good idea to call the airline ahead of time to confirm whether this is necessary. Similarly, some airlines, such as United Airlines, require a doctor's note if you are an expecting mother over 36 weeks pregnant.
If you are travelling alone with your child or children, you may need to present a letter of consent from the other custodial parent. This is to demonstrate that the child has permission to travel abroad and is not being abducted. If there is only one custodial parent, this is not necessary, but you should travel with a copy of your court custody documentation. If the other parent has passed away, it is recommended to travel with a copy of their death certificate.
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International travel with children
If a minor is travelling abroad without one or both legal guardians, they will need a signed Child Travel Consent form. This is also required for cruise lines and to enter Canada. The form demonstrates that the child has permission to travel and is not being abducted. If the child is travelling alone, the airline may require an unaccompanied minor form and a fee for unaccompanied minor service, which provides an airline employee escort.
When travelling with children, it is important to be aware of screening procedures at the airport. All passengers who alarm will undergo additional screening. Children who are able to walk through the metal detector unassisted may do so separately from their parent or guardian. If they alarm, they will be allowed multiple passes through the screening technologies. Infants and small children may be carried through the metal detector. If this alarms, additional screening is required. TSA Cares provides information to passengers with disabilities, medical conditions, or those who need additional assistance. Ice packs, freezer packs, and other accessories required to cool formula, breast milk, toddler drinks, and baby/toddler food are allowed in carry-ons.
Children under the age of 2 may be able to fly as a lap child for free. However, some airlines may require a copy of their birth certificate or government-issued photo ID. If your child turns 2 during the trip, you will be required to pay for a full-priced, round-trip ticket.
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Toddlers and older children
For toddlers and older children, the documentation requirements for air travel depend on factors such as the destination, the child's age, and whether they are accompanied by an adult. Here are the general guidelines:
Domestic Travel
When travelling within a country, toddlers and older children below the age of 18 do not usually need to provide photo identification if they are accompanied by an adult. In most cases, the responsible adult's identification will be accepted for the minor(s) as well. However, some airlines may request proof of age for children under two years old who are flying as lap children. In such cases, a copy of the child's birth certificate or a government-issued photo ID may be required at check-in. It is recommended to check with the specific airline, as some, like Southwest Airlines, are strict about requiring birth certificates or photo IDs for lap children.
International Travel
For international travel, minors, including toddlers and older children, must generally present the same travel documents as adults, which typically includes a passport. Some countries may have additional requirements, such as a notarized consent letter from a non-travelling parent. It is important to check the specific requirements for your destination well in advance of travel to ensure you have the necessary documents.
Unaccompanied Minors
When a child is travelling alone, they will typically need a child travel consent form, which can usually be obtained from the airline. This form provides proof that the child is authorized to travel unaccompanied and includes information about the individuals dropping off and picking up the child. The specific procedures and requirements may vary by airline, so it is recommended to contact the carrier directly for detailed information.
In summary, while toddlers and older children may not always need a birth certificate or photo ID for air travel, it is essential to be prepared and informed about the specific requirements of your destination and airline. Checking in advance will help ensure a smooth travel experience and avoid any last-minute surprises.
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Minors travelling alone
When travelling alone, minors are typically required to submit an unaccompanied minor form and pay a fee for an unaccompanied minor service, which provides an airline employee escort for the child at the airport and on board the plane. The specific requirements may vary by airline, so it is recommended to contact the airline directly. However, here are some general guidelines for minors travelling alone:
Unaccompanied Minor Form
The unaccompanied minor form is provided by the airline and requires information about who is dropping off the child and who will pick them up at the destination. This form serves as proof that the child is authorised to travel alone.
Identification Documents
A government-issued ID or birth certificate is generally accepted as valid identification for minors. If the minor is under the age of 2 and flying as a lap child, a birth certificate is typically required for domestic travel. For international travel, a passport is always necessary. Some airlines may also request additional documentation, such as a notarised consent letter from a non-travelling parent.
Travel Consent Form
A travel consent form is required when a minor travels without all legal guardians. This form should be in English and notarised, stating that the child has permission to travel with the accompanying adult. If a parent is deceased, a copy of the death certificate or proof of sole custody may be required.
Visa and Other Travel Documents
Depending on the country of destination, a visa or other specific documents may be mandatory for a minor to enter the country. It is essential to check the requirements of the specific country to ensure a smooth travel experience for the minor.
In summary, while a copy of a birth certificate can be useful for identification purposes, minors travelling alone should also be equipped with the necessary forms and documentation to ensure compliance with airline and country-specific requirements. Proper preparation will help ensure a safe and hassle-free journey for the minor traveller.
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Acceptable forms of ID at TSA
As of May 7, 2025, state-issued driver's licenses and IDs that are not REAL ID-compliant are no longer accepted as valid forms of identification at airports. Passengers without a REAL ID-compliant license should travel with an acceptable alternative form of ID.
The following are acceptable forms of ID at TSA checkpoints:
- REAL ID-compliant driver's licenses or other state photo identity cards issued by the Department of Motor Vehicles (or equivalent).
- State-issued Enhanced Driver's License (EDL) or Enhanced ID (EID).
- U.S. passport or passport card.
- DHS trusted traveler cards (Global Entry, NEXUS, SENTRI, FAST).
- U.S. Department of Defense ID, including IDs issued to dependents.
- An acceptable photo ID issued by a federally recognized Tribal Nation/Indian Tribe, including Enhanced Tribal Cards (ETCs).
- U.S. Citizenship and Immigration Services Employment Authorization card (1-766).
The TSA currently accepts expired IDs up to two years after their expiration date. However, temporary driver's licenses are not accepted as a form of identification.
Children under 18 travelling within the United States do not need to provide identification if accompanied by an adult. However, some airlines may request a birth certificate for children under the age of 2 who are flying as lap children. A passport or government-issued photo ID may also be required for lap children by certain airlines. For international flights, additional documentation such as a notarized consent letter from a non-traveling parent may be requested.
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Frequently asked questions
Yes, you can bring a copy of your child's birth certificate to the airport. It is always a good idea to keep some form of identification on hand, especially when travelling with children.
It is not necessary to bring your child's birth certificate to the airport if they have a passport. However, it is always useful to have it with you in case you need to prove their age or identity.
Children under the age of 18 do not need a photo ID to board a domestic flight if they are accompanied by an adult. However, some airlines may request additional documentation, such as a notarized consent letter from a non-travelling parent.
No, you cannot use your birth certificate as a primary document when flying domestically. However, it may be used as supporting evidence if your original identification was lost or stolen.











































