As of September 2019, Delta Air Lines SkyMiles are worth approximately $0.012 USD each. This means 1,000 SkyMiles are worth about $12.00 USD, and 50,000 SkyMiles are worth about $600.00 USD.

This also makes SkyMiles roughly equal in value to JetBlue and United miles, which are all valued at $0.012 USD each, but slightly less than valuable than Alaska, American, or Southwest miles.

Since flyers earn five SkyMiles for each dollar spent on airfare with Delta, before any elite status bonuses, this means you get an effective rebate of 6% — in the form of SkyMiles — on spending with Delta Air Lines.

Those with the highest elite status level, Diamond, get a 120% miles bonus, meaning they earn an effective rebate of 13.2% on spending with Delta Air Lines.

The co-branded American Express Blue Delta SkyMiles, American Express Gold Delta SkyMiles, American Express Platinum Delta SkyMiles, American Express Delta Reserve, all earn two SkyMiles per dollar spent with Delta Air Lines and one mile per dollar spent elsewhere.

This works out to an effective rebate of 2.4% at Delta Air Lines and 1.2% on all other purchases.

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