To enroll in SkyMiles, visit the SkyMiles Enrollment section on delta.com.

No, each SkyMiles account must be associated with an individual traveler. Flight miles will only be awarded to the actual traveler in the SkyMiles account in his or her name.

Your Personal Identification Number, or PIN, is a four-digit number (0-9) selected by you. It will ensure that no one but you will have access to your account information or transactions via our web site and the SkyMiles Automated Information Line. You will need your PIN each time you wish to access your SkyMiles account information so it's a good idea to write it down. For your protection, always store your SkyMiles number separate from your PIN.

Your PIN can be any four-digit number that is easy for you to remember, except 0000. To create your PIN, visit the PIN Assistance section on nwa.com. A PIN cannot be created by a Northwest representative. When creating a PIN, you will be required to provide your Zip/Postal code if it is on file with SkyMiles. Some areas in the Asia Pacific region either do not have postal codes or have recently changed postal codes. To see what address information is on file with SkyMiles, simply check your last mileage summary or mailing from SkyMiles or contact your local SkyMiles Service Center

Yes, you can change your PIN as needed via the PIN Assistance section on nwa.com.

US or Canadian SkyMiles members can receive a PIN reminder via email instantly by visiting the PIN Assistance section on nwa.com and submitting a PIN reminder request.

No, only one PIN per SkyMiles member is allowed at one time. However, you may change your PIN as needed.

The PIN can be saved on your personal computer for one year. This means you will not be asked for your PIN on subsequent visits to nwa.com. Each time you return to nwa.com and elect to save your PIN on your PC, your one year period begins again. After one year, you will be required to re-enter your PIN. If you use a PC other than your own personal computer to access your account, we recommend you log out of SkyMiles when leaving that computer. Not logging out will enable anyone with access to that computer access to your SkyMiles information.

Click the 'Logout' link in the light blue box at the top right of this page to log out of your SkyMiles account.

To clear your PIN from your PC and allow another user to log in, you must first log out of your nwa.com SkyMiles session. Go to Account Summary and click 'Log Out.' Once you have logged out, a new user can enter their SkyMiles number and PIN to begin their own nwa.com SkyMiles session. If you are using someone else's PC, first make sure they are logged out and then enter your SkyMiles number and PIN.

For your security, we place a limit on the number of times a member may attempt to access an account with an invalid PIN. If you receive a message regarding your PIN attempt limit, you have exceeded the maximum number of attempts allowed and access to your account information through nwa.com will be temporarily suspended. For immediate assistance, you may contact the nwa.com Website Online Support at 1-800-692-6955.

The security question and answer that you provide help us verify your identity if you forget your PIN, allowing you to get immediate assistance via nwa.com and delta.com.

Your security question and answer may be created on delta.com and will allow access to both nwa.com and delta.com. To create your Security Question and Answer simply enter your login information on the delta.com login box. If you do not have a Security Question and Answer, you will be prompted to create two new questions and answers. You will want to pick the two that no one else will know the answer to but that you will remember easily.

No. Once you have created your Security Question and Answer information, it cannot be changed or modified.

If you forget the answer you entered for the secret question that you selected, you will need to contact the nwa.com Website Online Support. They will verify your identity and reset your information. This will allow you to go back to nwa.com and create a new PIN. You may also create a new Security Question and Answer the next time you log on to delta.com To contact nwa.com Website Online Support call 1-800-692-6955.

As a security and data integrity measure the Secret Question and Answers were removed from former WorldPerks customer accounts. These accounts are now transitioned to the SkyMiles program and you will need to establish two new Security Question and Answers when you log on to delta.com.

Allow six days after the flight has been flown for Northwest credit to appear on your account. For partner airlines, please allow two to three weeks.  To ensure that retroactive miles are properly credited to your account, you must provide the original, ticket number from your Northwest or partner airline flight. Northwest Airlines will no longer issue retroactive credit based on a boarding pass alone. If you purchased your ticket using a credit card, you'll find your ticket number on the credit card statement or receipt. If you purchased your ticket from a travel agent, your travel professional can also provide you the number. Otherwise, your ticket number can be found on your Trip Summary and Receipt or your paper ticket.  For information on how to report your discrepancy and to request retroactive mileage credit click here

Your SkyMiles Account Summary is available online and real-time.  Your online Account Summary will automatically provide account details from the current date back to the first of the previous month.  Additionally, you may request Account Summary information for three previous calendar years plus the current year.

Prior to viewing your Account Summary, you will be asked to log in using your SkyMiles number, last name and PIN.  This is for your security, so that you are the only person who can view your SkyMiles account information.

The SkyMiles online Account Summary has been tailored to allow you to choose the date range and type of activity you want to view.  Your customized selection will determine the amount of activity displayed at one time, and the 'View More' button will only appear if the maximum number of activities is displayed.  For ease of viewing, air activity with related bonuses will always appear on the same page.

To ensure proper mileage credit, present your SkyMiles number when you check in for each Northwest or Northwest partner flight.

View the appropriate Award Chart for mileage requirements of your specific trip. You must have enough available miles in your account to complete an Award Travel Reservation. Please note, when making your Award Travel Reservation on nwa.com, you may receive fares that are a combination of PerkSaverSM and PerkPassSM Awards and/or different classes of service.

View the Award Chart for your specific trip to confirm Mileage Upgrade requirements. You must have enough available miles in your account to complete a Mileage Upgrade reservation. Please note, when making your Mileage Upgrade reservation on nwa.com you may receive fares that are a combination of Economy and First or BusinessElite.

You can update your mailing address and phone number on file with SkyMiles by visiting the Manage My Account section of nwa.com. To update your e-mail address, please visit NWA E-mail. To update the name on your SkyMiles account, please contact our SkyMiles Service Center at 1-800-447-3757.

SkyMiles Members can request a replacement card on nwa.com. You will need your SkyMiles number and PIN.

If you have duplicate accounts for yourself, please contact SkyMiles at 1-800-447-3757 for assistance in merging your accounts into one.

Current Locked Miles are the total number of miles being held for current Award Travel Reservations. Locked miles are unavailable for subsequent reservations unless the current reservation is canceled. Once travel is ticketed, miles will be debited from your Total Banked Miles.

Current Available Miles are the total number of miles currently available for new award travel redemptions (equal to Total Banked Miles less Total Locked Miles).

Total Banked Miles are the total number of miles credited to your SkyMiles mileage account to-date. Total Banked Miles equal the sum of your Total Locked Miles plus your Total Available Miles. Miles that have been redeemed (used toward the purchase of award travel) are not included in Total Banked Miles.

SkyMiles Medallion status offers generous travel benefits for our most frequent travelers, including unlimited complimentary domestic First Class upgrades, mileage bonuses, attentive personal service and more. For a complete list of benefits, please visit our Medallion overview.

SkyMiles members can earn Medallion status by earning a minimum of 25,000 Medallion Qualifying Miles or 30 Medallion Qualifying Segments in a calendar year.

Medallion Qualifying Miles are the miles earned in the current year that count toward Medallion qualification.  Medallion Qualifying Miles include credited flight miles, plus a 50% bonus earned for paid First/BusinessMedallionSM and full fare Coach Class travel on Northwest, KLM and qualifying SkyMiles partner airlines .

Medallion Qualifying Segments are earned when paid segments on qualifying airline partners are booked. View a current list of Medallion qualifying partners.

Current year Medallion Qualifying Segments are segments earned in the current calendar year that count towards Medallion qualification.

Total Program Miles are the total number of SkyMiles - including Medallion Qualifying Miles, Partner Miles (from hotels, cars and other SkyMiles partners) and Bonus Miles - you have earned since joining the SkyMiles program.