According to United Airlines, passengers traveling with a newborn baby or an infant may need to present a birth certificate for the child. If the baby is older than seven days, then you might also need to provide a doctor's authorization. Just to be safe, double check with a United Airlines representative before you leave for the airport.
If you are traveling domestically or between the United States, Canada, U.S. Virgin Islands and Puerto Rico, a child younger than 2 years old can fly for free. If you are flying internationally, a ticket must be purchased for a child of any age; however, special discounts may apply depending on how many children are traveling and your destination.
If an infant will be traveling on your lap, a ticket may not be necessary. If you are traveling domestically or to Canada, the U.S. Virgin Islands or Puerto Rico, an infant may not need a ticket, but your reservation must confirm that you are traveling with an infant in your lap. If you are flying internationally, you might need to purchase a ticket for the infant.
For domestic travel, a seat for your infant costs the adult fare. If you are flying internationally, however, a seat for your infant may be eligible for discounts depending on your destination.
United Airlines recommends that you bring coloring books and toys for your children to keep them entertained throughout the flight. Also, it's a good idea to give your child food and drink when the plane is taking off and landing in order to relieve ear pain from the adjustments in cabin pressure.
