
While birth certificates are essential documents for many official purposes, their acceptance as a valid form of identification at airports varies. In the US, children under the age of 18 who are travelling with an adult do not need a photo ID to board a domestic flight. However, a birth certificate may be required to prove their age if they are under two and flying as a lap child. For international travel, a passport is always required. For adults, a birth certificate is not a valid form of identification for international travel. However, it can be used to obtain a passport or as proof of identity if the individual's ID was lost or stolen. From May 7, 2025, a state-issued driver's license or ID must be REAL ID-compliant to be accepted as valid identification at US airports.
| Characteristics | Values |
|---|---|
| Is a birth certificate acceptable ID for adults? | No, a birth certificate is not a valid form of identification for international travel. |
| Is a birth certificate acceptable ID for children? | Yes, a birth certificate is accepted as a form of identification for children under the age of 18 who are travelling with an adult. |
| Is a birth certificate required for children? | No, but it is recommended to have one as proof of age for babies who are flying, especially if they look like they might be over the age of 2. |
| Can a birth certificate be used to obtain a passport? | Yes, a birth certificate can be used to obtain a passport. |
| Can a birth certificate be used as a replacement for a passport? | No, for international travel, a passport is required. |
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What You'll Learn

Birth certificates are essential for travel
While birth certificates are not a valid form of identification for international travel, they are essential for several travel-related purposes. Firstly, birth certificates can be used as proof of age for infants and children travelling with their parents. Airlines often offer free travel for children under the age of two who do not occupy a separate seat, and a birth certificate can be used to prove a child's age and eligibility for this programme. In some cases, a birth certificate may also be required for older children who resemble adults, to prove that they are minors.
Additionally, birth certificates can be used to obtain a passport, which is necessary for international travel. Adults and children alike require passports for international travel, and birth certificates can be used to apply for them. This is especially useful in cases where individuals have lost their original passports and need to obtain a new one quickly.
It is important to note that the requirements for travel documentation may vary depending on the destination and the airline. While some airlines are more lenient, others have strict policies regarding the presentation of birth certificates or government-issued photo IDs for minors. Therefore, it is always advisable to check with the specific airline and destination beforehand to ensure compliance with their requirements.
In summary, while not a standalone identification document for international travel, birth certificates are essential for travel, particularly for minors and individuals applying for passports. They serve as proof of age for children and facilitate the passport application process, making them a crucial component of travel preparations.
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They are valid ID for children
While birth certificates are not a valid form of identification for international travel, they are considered essential documents for several legal and official purposes, including travel. For children, birth certificates can be used as proof of age for babies who are flying. This is especially necessary if the child looks like they might be over the age of 2, as security personnel may ask you to show proof of their age. This is because children under the age of 2 are allowed to travel for free on an adult's lap, and airlines will want to ensure that infants are within this age bracket to take advantage of the lap infant program.
In the case of domestic travel, children under the age of 18 do not need to provide identification if they are accompanied by an adult. However, it is always good to keep some form of identification on hand. A birth certificate, ID card, or a copy of their passport can be useful in such cases. Additionally, if your child is turning 2 during your trip, you will need to pay for a full-priced, round-trip ticket for them, so it is advisable to book two one-way tickets to save money.
Some airlines may also request additional documentation, such as a notarized consent letter from a non-traveling parent for international flights. If the child has a deceased parent, the living parent or guardian will need to sign the consent form and attach a copy of the late spouse's death certificate. In the case of a divorce, the parent may need to provide a copy of the custody agreement signed by both parents unless they have proof of sole custody.
While birth certificates are not always mandatory for children travelling with their parents, they can be extremely useful in certain situations. It is always a good idea to check the specific requirements of the airline and destination well in advance to ensure you have the necessary documents for a smooth travel experience.
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They are not valid for international travel
While birth certificates are essential documents for many official purposes, they are not valid for international travel. If you are travelling internationally, you must carry a passport. This applies to both adults and children. If you are travelling with a child, you may need to bring a copy of their birth certificate in addition to their passport. This is because some airlines require proof of age to show that the child is under the age of 2 and can travel as a lap child. In this case, a birth certificate is an easy way to prove your child's age. However, if your child is over the age of 2, they will need to pay for a full-priced ticket and will no longer be allowed to travel as a lap child.
If you are travelling domestically, the rules vary. In the US, children under the age of 18 do not need to provide identification when flying within the country. However, some airlines may request a birth certificate as proof of age for babies who are flying. This is especially important if your child looks like they might be over the age of 2, as it is more likely that airline staff will ask for proof of age. While this is not a requirement, it is always a good idea to keep some form of identification on hand, just in case.
For adult passengers over the age of 18, the rules are different. When flying within the US, you must show valid identification at the airport checkpoint. However, this does not need to be a passport and can include other forms of ID such as a driver's license or state-issued ID card. From May 7, 2025, any state-issued ID or driver's license must be REAL ID-compliant. If you are unsure whether your ID complies, you should check with your state department of motor vehicles.
In summary, while birth certificates are important documents that can be used to obtain a passport, they are not valid for international travel. For domestic travel, the rules vary, and while children generally do not need identification, adults must carry valid ID. It is always important to check the specific requirements of your airline and destination well in advance of your travel to ensure you have the necessary documents.
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They can be used to obtain a passport
A birth certificate is an essential document for many official purposes, including obtaining a passport. It is a valid form of identification for minors and can be used to prove their age when flying. However, it is not a valid form of identification for adults flying internationally.
When applying for a passport, you typically need to provide proof of citizenship, such as a birth certificate or other documents. For U.S. citizens, this could be a U.S. birth certificate or a Consular Report of Birth Abroad. If you were born outside the U.S. and acquired citizenship through your parents, you will need to submit your foreign birth certificate listing your parents, along with evidence of their U.S. citizenship. If you were born outside the U.S. and acquired citizenship through adoption, you will need to provide additional evidence as per the Child Citizenship Act.
To apply for a U.S. passport, you will need an original, state-issued birth certificate with a raised seal, or a naturalization document. A certified copy of your birth certificate is also valid for a passport application. If you do not have your original birth certificate or a certified copy, there are other documents that can be used to prove your identity, including a baptismal certificate, hospital birth certificate, census record, or family Bible record. These documents must be accompanied by another form of ID.
If you are applying for your first passport as an adult, you will need to provide a physical, photo ID and a photocopy of it. You will also need to submit one photo with your application. If your valid passport is damaged, you will need to include it with your application, along with a signed statement explaining the damage. Normal "wear and tear" such as folded pages or a small bend do not count as damage.
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They are useful if your ID is lost
Birth certificates are essential documents for many legal and official purposes, including travel. While they are not valid forms of identification for international travel, they can be used to obtain a passport. They are also useful as proof of age for babies and children flying with you.
In some cases, birth certificates can be used as a form of identity confirmation if your ID has been lost or stolen. This is only applicable when flying domestically, and a birth certificate cannot be used as a primary document for identity verification. However, it can be used as supporting evidence, in conjunction with other documents, to confirm your identity.
For adult passengers (18 and older) travelling within the United States, there are several acceptable forms of identification, including a US passport, passport card, trusted traveller card (Global Entry, NEXUS, SENTRI, or FAST), and a driver's license. It is important to note that starting on 7 May 2025, a state-issued driver's license or ID that is not REAL ID-compliant will no longer be accepted as a valid form of identification at airports.
For minors under the age of 18 who are accompanied by an adult and flying domestically, no identification is required. A valid boarding pass is all they need to fly. However, it is recommended to keep some form of identification on hand, and a birth certificate can serve as a useful backup option.
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Frequently asked questions
No, a birth certificate is not a valid form of identification for adults at the airport. Adults over the age of 18 are required to have a valid passport or other acceptable ID, such as a driver's license, when travelling internationally or domestically.
Children under the age of 18 do not need to provide identification when travelling domestically within the United States. However, a birth certificate is often used as proof of age for babies and toddlers, especially if they are flying as a lap child. Some airlines may also require additional documentation, such as a consent letter from a non-travelling parent.
Yes, a birth certificate can be used to obtain a passport, which is required for international travel. It can also be used as a backup form of identification if your primary ID is lost or stolen.
In addition to a valid passport, other acceptable forms of ID include a driver's license, a state-issued ID card, a trusted traveller card, and a military ID. From May 7, 2025, a state-issued driver's license or ID must be REAL ID-compliant.











































