How to Find Your Delta SkyMiles Number

Your Delta SkyMiles number is your unique loyalty account identifier — the key that connects every flight, partner purchase, and award redemption to your account. Whether you're trying to add miles from a recent trip, link your account to a credit card, or book an award flight, you'll need this number handy. Here's exactly where to find it.

What Is a Delta SkyMiles Number?

Your SkyMiles number (sometimes called your membership number) is a unique numeric identifier assigned to your SkyMiles account when you enroll in Delta's frequent flyer program. It's typically 10–11 digits long and stays with you for the life of your membership — it never changes, even if you update your name or contact information.

This number is distinct from your Delta confirmation number (which is trip-specific) and your TSA Known Traveler Number. Don't mix them up when filling out travel profiles or credit card applications.

5 Ways to Find Your SkyMiles Number

1. Log Into Your Delta Account Online

The fastest method for most people:

• Go to delta.com and sign in
• Your SkyMiles number appears in the top right corner of the page once you're logged in, next to your name
• You can also find it under My Profile → Personal Information

2. Check the Fly Delta App

If you have the app installed:

• Open the app and log in
• Tap the profile icon or navigate to My Account
• Your SkyMiles number is displayed on your digital membership card and in your account details

The app also stores a scannable barcode version of your number, which airport kiosks and gate agents can read directly.

3. Look at a Past Booking Confirmation Email

Delta includes your SkyMiles number in most booking confirmation emails, particularly when you were logged into your account at the time of booking. Search your inbox for emails from delta.com or [email protected] and look for the line labeled "SkyMiles Number" or "Membership Number."

4. Check Your Physical SkyMiles Card

If you enrolled years ago, Delta may have mailed you a physical membership card with your number printed on the front. These cards are less common now that everything is digital, but if you have one in a travel wallet or old documents, it's worth checking.

5. Call Delta SkyMiles Customer Service ✈️

If none of the above methods work:

• Call 1-800-323-2323 (Delta SkyMiles service line)
• Have your full name, email address, and date of birth ready to verify your identity
• A representative can look up your number and help you regain account access if needed

What If You Can't Log In?

If you've forgotten your password or username:

• Use the "Forgot Password" or "Forgot Username" links on the delta.com sign-in page
• Delta will send a reset link to the email address associated with your account
• If you no longer have access to that email, phone verification or customer service is your next step

If you think you may have multiple SkyMiles accounts (a common issue for frequent travelers who accidentally enrolled twice), Delta can merge them — but you'll need to contact customer service directly. Miles from duplicate accounts can typically be consolidated into a single membership.

Where Your SkyMiles Number Matters Most

Knowing where to enter your SkyMiles number is just as important as finding it. Here are the key places it comes into play:

A Note on Co-Branded Delta Credit Cards 🔑

If you carry a Delta co-branded credit card (issued by American Express), your SkyMiles number is linked directly to that card account. You can find your SkyMiles number by logging into your American Express online account and navigating to the card's rewards or benefits section — it should appear there alongside your miles balance.

If you applied for a Delta Amex card and didn't already have a SkyMiles account, one was automatically created for you at the time of approval. That means your SkyMiles number exists even if you've never consciously set up a frequent flyer profile.

What If You've Never Enrolled in SkyMiles?

Enrollment is free and takes less than two minutes at delta.com/skymiles. Once you create an account, you'll receive your SkyMiles number immediately — and you can retroactively claim miles from flights taken in the past (Delta generally allows credit requests for flights within the last 9 months, subject to their current policy at the time you request).

The Variable That Determines What You Do Next

Finding your SkyMiles number is straightforward — but what you do with it depends entirely on where you are in your travel and credit journey. Someone building credit for the first time is in a very different position than a frequent flyer with years of history deciding whether to add a co-branded card to optimize mile earnings. The number itself is just a starting point. What makes sense from there depends on your own financial profile, travel habits, and credit picture. 🧭