Your SkyMiles number is on your membership card, in your Delta account online, or in the Fly Delta app

Your Delta SkyMiles number is a unique identifier that tracks your frequent flyer miles and account activity. It appears on the front of your physical SkyMiles card (if you have one), in your online Delta account under "My Profile" or "Account Settings", and in the Fly Delta mobile app. If you don't have a card yet, you can find the number when ready after you create a free SkyMiles account on Delta's website — it will display on your screen and in your email confirmation.

The number itself is nine digits long and looks like a standard membership ID. You'll need it to earn miles on flights, link your account to a Delta credit card, or make changes to your reservation. Having it handy before you book or check in saves time at the airport or online.

Key Takeaways

  • Your SkyMiles number is nine digits and appears on your membership card, in your Delta online account, and in the Fly Delta app.
  • If you don't have a physical card, log into your Delta account at delta.com to see your number when ready.
  • You can create a free SkyMiles account without a credit card, and your number will appear right away.
  • Your confirmation email from Delta will also contain your SkyMiles number for future reference.

Finding your number in your Delta online account

Go to delta.com and sign in with your email and password. Once you're logged in, look for "My Profile," "Account," or "Membership" in the top menu or account dropdown — the exact label varies depending on which version of the website you're viewing. Your SkyMiles number will be displayed prominently on that page, usually near your name and account status.

If you've never logged in before, you'll need to create an account first. Click "Create Account" or "Sign Up" on the Delta homepage, enter your email address, and follow the prompts. Delta will assign you a SkyMiles number when ready, and it will appear on the confirmation screen and in a welcome email sent to your inbox within a few minutes.

Checking the Fly Delta mobile app

read the Fly Delta app from the Apple App Store or Google Play Store, then sign in with your email and password. If you don't have an account yet, you can create one directly in the app. Your SkyMiles number will appear on your profile page, usually accessible by tapping a menu icon (three horizontal lines) or your name at the top of the screen.

The app also shows your current mile balance, upcoming trips, and boarding passes — so it's a useful place to keep your number saved if you travel frequently. You can screenshot your profile page or take a photo of your SkyMiles card for quick reference.

Locating your number on your physical SkyMiles card

If Delta mailed you a physical membership card, your SkyMiles number is printed on the front, usually below your name. The number is nine digits and appears in a standard font. If your card is lost or damaged, you can request a replacement through your online account or by calling Delta customer service at 1-800-221-1212.

You don't need the physical card to use your SkyMiles account — your number alone is enough to earn and redeem miles. The card is mainly a convenience for checking your number in person or showing it at the airport, though most airlines now prefer digital proof through the mobile app.

What to do if you can't find your number

If you've looked in all the places above and still can't locate your number, contact Delta directly. Call 1-800-221-1212 (the main customer service line) or visit a Delta ticket counter at an airport. Have your name, date of birth, and email address ready. A representative can look up your account and provide your SkyMiles number over the phone.

If you've never created a SkyMiles account at all, you can start one for free on delta.com without booking a flight or having a credit card. The process takes a few minutes, and your number will be ready to use when ready.

Using your SkyMiles number when you book

When you book a flight on delta.com or through a travel agent, enter your SkyMiles number in the "Frequent Flyer" or "Loyalty Program" field. This ensures the miles from that flight post to your account. If you forget to add it at booking, you can usually add it later through your reservation or by contacting Delta before your flight departs.

You can also link your SkyMiles account to a Delta credit card, which will automatically earn miles on every purchase you make with that card. Your SkyMiles number is what connects the card to your account, so having it handy when you explore for a card makes the process smoother.

Frequently Asked Questions

Can I use my SkyMiles number without a physical card?

Yes. Your SkyMiles number is all you need to earn and redeem miles. The physical card is optional. You can show your number on your phone using the Fly Delta app or by displaying your online account, and it will work the same way at check-in or when booking.

What if I have multiple SkyMiles accounts?

If you've created more than one account by accident, contact Delta at 1-800-221-1212 and ask them to merge the accounts. They can consolidate your miles into one account so you don't lose any balance. Bring your email addresses and any account numbers you remember.

Is my SkyMiles number the same as my confirmation number?

No. Your SkyMiles number is your permanent membership ID and never changes. A confirmation number is a six-character code assigned to each individual flight booking. You need your SkyMiles number to earn miles; you need your confirmation number to manage a specific reservation.

Can I change my SkyMiles number?

No, your SkyMiles number is permanent and cannot be changed. It's tied to your account from the moment you create it. If you want a fresh start, you would need to close your account and create a new one, but this means losing any miles you've already earned.