3months is the normal age,

@denore, babies can fly as early as 2 days old depending on the airline.

now,but sense it's out if Stat make sure to check with her doctor as well to make sure there isn't any things you need to be aware of or something

not sure but I know some people who jst flew with thier 4 month old. btw feed your baby a bottle as the plane is taking off and landing to get thier ears to pop.