Can I Add My American Airlines AAdvantage Number After Booking? | Get Miles Posted Right

You can usually add a frequent-flyer number to an existing reservation online, in the app, by phone, or at the airport before you fly. You booked your flight, your inbox is calm, then it hits you: your frequent-flyer number wasn’t on the reservation. Annoying? Yep. Fixable? Most of the time, yes. This matters for more

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