Traveling Domestically? Carry Age Proof (for the baby)

If you are traveling with an infant between the ages of 1 and 2, it’s a good idea to carry the baby’s passport or birth certificate copy, even if you are traveling domestically. This is because airlines will sometimes ask to verify that the baby is under 2 years of age since he/she is practically free. This is particularly pertinent if you have a large baby!