Infants and small children must be accompanied by someone who is at least 18 years old, or is the child's parent or legal guardian. The adult and the child must travel in the same cabin.
If you're traveling with a newborn, Delta and Delta Connection® Carrier flights do need an approval letter from a physician saying it's all right for the newborn to fly. The following infant age restrictions apply to all Delta and Connection Carrier flights:
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| Airline | Infant Age | Requirement or Restriction | ||
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| Delta | Less than 7 days | Physician travel approval letter | ||
| Comair® | Less than 12 days | Physician travel approval letter | ||
| SkyWest® | Less than 7 days | Physician travel approval letter | ||
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