1 Frankfurt Intl Airport (Frankfurt, Germany) 2  Right now, 120 airlines operate out of Frankfurt Intl Airport. 3  Frankfurt Intl Airport offers nonstop flights to 296 cities.  Every week, at least 4,564 domestic flights and 16,296 international flights depart from Frankfurt Intl Airport.
Keep your child who has outgrown his forward-facing car seat in a belt-positioning booster seat until they are big enough to fit in regular seat belts. Keep in mind that, according to the AAP, this is usually not until a child has 'reached 4 feet 9 inches in height and are between 8 and 12 years of age.'.
Usually a child can be moved to a booster when they are too big for a harnessed carseat, and once they are able to sit properly in a seatbelt. A child should be in some type of booster seat until the adult seat belt fits correctly, generally around 8-12 years old and 4'9 tall (Also see Question 9 below). Q8: My child is over 40 pounds or too tall for his carseat, but isn't mature enough to sit in a seatbelt with a booster.