Regional airlines (regionals) act as feeder airlines to major airlines connecting regional centers to main hubs (airports). Regionals also link smaller centers to each other. These airlines typically operate turbo-prop or single aisle regional jets on short routes (typically less than three hours). Due to the short flight times passengers on regionals are generally not served a meal or alcoholic beverages or given a blanket and pillow. In fight entertainment is also rare. Whilst similar to low cost airlines, regional airlines differ in that fares generally include baggage that can be transferred between flights. Many regional airlines are subsidiaries of full service airlines and allow premium passengers access to the full service carrier lounges. Low cost carriers typically do not have passenger lounges, business or first class cabins, and are seldom part of an alliance. These carriers offer a lower level of service than full service carriers and generally work on a point-to-point route network. The provision of passenger comforts such as meals, blankets, pillows and in flight entertainment is low, variable or nonexistent and if available, usually needs to be purchased. Low cost carriers typically operate one or two aircraft types and rarely transfer baggage from one flight to another. Full service airlines typically offer passengers in flight entertainment, checked baggage, meals, beverages and comforts such as blankets and pillows in the ticket price. The seats generally have more recline than a low cost carrier as well as more leg room. Full service airlines offer passengers the choice of economy or business class travel and, on some flights, first class. The airlines in this category will transfer baggage between flights and to alliance partners of which many full service carriers are a part (SkyTeam, oneworld, Star Alliance). Full service airlines often have a long history and are the flag carrier for their country of origin. In some cases an airline will fit within multiple categories. in situations like this, an executive decision is made by our editors as to where the airline best fits or the category may be requested by the airline itself.