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, click here. 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, click here.

If you forget your PIN, you may request a PIN reminder by visiting here. Your PIN reminder will be sent by e-mail or by post to your address on file with SkyMiles.

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 90 days. 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 or continue to save your PIN on your PC, your 90-day period begins again. After 90 days 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.

Logout of SkyMiles.

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 the Mileage Balance page and click on 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.

Logout of SkyMiles.

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. Access to your account information through nwa.com is temporarily suspended.

Logout of SkyMiles.

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.

To ensure that retroactive miles are properly credited to your account, you must provide the original, 13-digit ticket number from your Northwest-operated 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. Otherwise, your ticket number can be found on your Trip Summary and Receipt or your paper ticket. A Northwest ticket number always begins with 012. Your travel professional can also provide you the number. To request retroactive credit, click here or mail/fax your request to your local SkyMiles Service Center.

Your Account History will be displayed based upon your flight and non-flight activity and you may view up to 15 transactions at a time.

Total 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.

Total 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 are the sum of your Total Locked Miles and 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/BusinessElite and full fare Coach Class travel on Northwest, KLM and qualifying SkyMiles partner airlines .

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.