Yes, Alaska Airlines Mileage Plan members can earn miles by flying with a variety of partner airlines. Alaska Airlines has a diverse network of partners, allowing members to earn miles when they fly on any of these airlines. This includes both domestic and international carriers that are part of the Mileage Plan program. Members should ensure that they provide their Mileage Plan number at the time of booking or when checking in to ensure that miles are credited to their account. It is advisable for members to review the specific earning rates and conditions for each partner airline, as they may vary. Generally, members can also earn miles through certain travel-related purchases and services associated with partner airlines. For the most accurate and up-to-date details, it may be useful to check the current information on the alaskaair.com website.