How to Add Your AAdvantage Number to a Booking

If you forgot to add your AAdvantage number while booking your flight — don’t worry.
American Airlines lets you add or update your AAdvantage number anytime before you fly (and sometimes even after).

Here’s a simple, step-by-step guide on how to add your AAdvantage number to your booking so you don’t miss out on earning miles or elite credit.

Step 1: Log In to the American Airlines Website

Go to aa.com and click “My Trips.”
You can also do this in the American Airlines mobile app.

Enter your booking reference (record locator) and last name to pull up your trip.
If you already have an account, just log in with your AAdvantage number — your upcoming flights will appear automatically.

Step 2: Locate Your Trip Details

Once you open your reservation, look for an option like “Add/Edit Passenger Details” or “Add Frequent Flyer Number.”
This is usually found under your passenger’s name or profile information.

Step 3: Enter Your AAdvantage Number

Type your AAdvantage number into the field labeled “Frequent Flyer Number” or “Loyalty Program.”

Then click Save or Update.

✅ Tip: Double-check the name on your ticket matches your AAdvantage account name exactly — even small spelling differences can prevent miles from posting.

Step 4: Add It via the Mobile App

If you prefer using your phone:

1. Open the American Airlines app.

2. Go to Trips → Select your booking.

3. Tap “Add AAdvantage number” (if not already shown).

4. Enter your number and confirm.

Once saved, your miles will automatically post after your flight.

🧾 Step 5: Add It When Checking In

If you forgot until the last minute — you can still add it during online check-in (24 hours before departure).

Look for the “Frequent Flyer Number” field before confirming check-in.

Step 6: Add Your Number After the Flight (Missed Credit)

If you already flew and forgot to add your AAdvantage number, you can still claim the miles within 12 months of the flight.

Go to: aa.com/missingmiles

Then enter:

• Your ticket number (begins with 001-)

• Flight details

• Your AAdvantage number

Miles will usually appear in your account within 5–10 business days.

Step 7: Automatic Linking for Future Bookings

If you always log in before booking, your AAdvantage number is automatically added to every reservation — no manual updates needed.

💡 Pro Tip: Save your number in your browser or app profile to earn miles on every flight, hotel, and partner booking automatically.

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Final Thoughts

Adding your AAdvantage number to your American Airlines booking ensures you never miss out on earning miles or progress toward elite status.
Even if you forgot, you can easily add it later — before or after your trip — in just a few clicks.