When Do Delta SkyMiles Expire?

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Delta SkyMiles do not expire as long as the account is open and in good standing.

The one exception to the rule is if Delta closes your account if a member is deceased or fraudulent activity occurs on the account.

Delta Airlines Plane Taking Off
Photo: Delta Air Lines

When Can Delta Close Your Account?

Delta reserves the right to close your account and forfeit any SkyMiles if:

  • Fraudulent activity occurs.
  • A Member requests an account closure.
  • A Member is deceased.
  • A Member does not respond to repeated communication attempts regarding the status of his/her account.
  • A Member resides in or relocates to a country where membership is prohibited under applicable law.
  • A Member violates the terms of this Membership Guide and Program Rules.

Comparison of U.S. Airlines' Policies

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

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