The WACC of Delta Air Lines Inc (DAL) is 7.4%.
| Range | Selected | |
| Cost of equity | 8.20% - 10.80% | 9.50% |
| Tax rate | 22.10% - 25.70% | 23.90% |
| Cost of debt | 5.40% - 5.40% | 5.40% |
| WACC | 6.6% - 8.1% | 7.4% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.93 | 1.06 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 8.20% | 10.80% |
| Tax rate | 22.10% | 25.70% |
| Debt/Equity ratio | 0.65 | 0.65 |
| Cost of debt | 5.40% | 5.40% |
| After-tax WACC | 6.6% | 8.1% |
| Selected WACC | 7.4% | |