Which type of bags are primarily associated with international flights?

The correct answer is indeed international bags. These bags are specifically designated for passengers traveling on international flights, and they have unique characteristics that distinguish them from other types of baggage.

International bags are subject to different regulations and requirements compared to domestic luggage, including customs and security checks. They often require additional handling for things like duty-free items and may have specific labeling to indicate their international status. These bags typically follow the regulations set by international aviation authorities and the respective countries' customs departments, which can include restrictions on certain items and extra documentation.

The other types of bags, such as local, connection carrier, and online bags, do not specifically pertain to the international travel context in the same way. Local bags usually refer to luggage that is checked in for flights within a domestic area. Connection carrier bags generally involve baggage transferred between different airlines for connecting flights, and online bags typically refer to luggage that is handled through an online booking or check-in system, regardless of flight type. All these categories serve specific functions that apply to different travel scenarios but do not embody the implications and regulations central to international travel.