Mileage Booster is a product that allows SkyMiles members to increase their mileage balance by purchasing extra bonus miles with every eligible flight. Mileage Booster miles do not count toward Medallion® status qualification.

Currently Mileage Booster is offered to all SkyMiles Members traveling on a Delta marketed flight within the U.S., Puerto Rico and the U.S. Virgin Islands. Mileage Booster is offered as a Trip Extra at the time of booking, in MyTrips, and during online check-in process.

No, bonus miles do not count toward qualification for Medalllion® status, but they will add to your total available award mileage balance.

After the completion of your flight, bonus miles will post within 24 hours.

No. Delta award miles do not expire.

There are several reasons why Mileage Booster may not be available, including but not limited to:

  • Your SkyMiles number was not included in your reservation.
  • Your flight was not within the U.S., Puerto Rico and the U.S. Virgin Islands
  • Your reservation includes travel on airlines other than Delta or Delta Connection.

Yes. You still receive the bonus miles purchased, regardless of whether or not your flight is cancelled or re-routed.

No. There is no maximum amount of miles you can purchase through Mileage Booster.

All Mileage Booster transactions are final and will not be refunded.

Yes. Using Mileage Booster on Award Travel is a great way to build back your miles.

Miles can quickly add up to Award Travel. Roundtrip Award Tickets within the United States are available for as few as 25,000 miles. With over 100 SkyMiles partners, you have so many ways to get to your next Award Ticket. Visit for a complete list of mileage-earning opportunities.

For additional questions or assistance regarding mileage booster, Talk To Us.