How do I earn miles for flights booked with other airlines?

Earning miles for flights booked with other airlines can be a beneficial way to enhance one’s mileage balance within the Northwest Airlines WorldPerks program. Northwest Airlines, as part of its partnership with other airlines, allows members to accrue miles on tickets purchased with eligible carrier partners. These partner airlines usually belong to alliances such as SkyTeam, as well as other airlines that may have interline agreements with Northwest. To earn miles for a flight booked with another airline, members should ensure that they provide their WorldPerks frequent flyer number when making the reservation, either through the airline’s website, via a travel agency, or directly at the airport. It is also important to review the terms and conditions associated with earning miles on partner flights, as the number of miles earned can vary based on the airline, fare class, and the specific routes flown. A member's travel may be subject to certain restrictions, such as not all flights being eligible for mileage accumulation. Therefore, it is advisable for members to check the specific airline's mileage earning chart or guidelines associated with the WorldPerks program. Additionally, it may be helpful for travelers to log in to their accounts on the Northwest Airlines website or refer to the current WorldPerks page for detailed information regarding partners and earning rates. This practice can ensure that members are maximizing their potential for earning miles when flying with other airlines.