One of the greatest benefits of being a member of an airline loyalty program is the ability to access benefits not just on one airline, but across the networks of that carrier and its many airline partners collectively. For example, a passenger with elite status on one airline might be able to access lounges and other flight benefits while flying with a partner carrier. Furthermore, those with award miles can often book flights with an airline’s partners, even if they are not part of a connecting itinerary that includes legs operated by the airline issuing the miles.