When Do American AAdvantage Miles Expire?

American Airlines AAdvantage miles expire 18 months from account inactivity, which can be extended by earning or redeeming at least one mile.

However, if you are under 21 years old, your miles won’t expire, but the 18-month clock will start on your 21st birthday.

Ways to Extend Your AAdvantage Miles

There are several ways to reset the expiration of your AAdvantage miles:

Comparison of U.S. Airlines' Expiration Policies

Below are the mileage expiration policies of every major U.S. airline.

Airlines Expiration Policy
Alaska Airlines Alaska 24 months
American Airlines American 18 months
Delta Air Lines Delta Never
Frontier Frontier 180 days
Hawaiian Airlines logo Hawaiian Never
JetBlue JetBlue Never
Southwest Airlines Southwest Never
Spirit Airlines Logo Spirit 12 months
United Airlines logo United Never