What happens if a passenger's cabin bag exceeds the size limit?

When a passenger's cabin bag exceeds the size limit, it is typically required to be checked into the hold of the aircraft. This usually comes with an additional fee because checking bags is a different service than bringing them into the cabin. Airlines have specific size limits for cabin bags to ensure safety and efficiency during boarding; larger bags can cause delays and require more space than is available in the overhead compartments or under the seats.

Confiscation of the bag is not standard practice, as passengers are usually given the option to check it instead. The idea of returning the bag to the car is impractical, especially in busy airports where passengers may not have quick access to their vehicles. Additionally, fining a passenger for an oversized bag is not a common policy among airlines, as they focus more on the operational aspect of ensuring that all luggage meets safety regulations. Therefore, checking in the bag at an additional fee is the correct and most common procedure in this scenario.