#### **Exhibit 12.1**

**NORTHWEST AIRLINES CORPORATION**

**(DEBTOR-IN-POSSESSION)**

**COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES**

**(Dollarsin millions)**
| ** **                                        | ** ** | **Three months ended** | ** ** |
|---------------------------------------------------|------------|----------------------------------|------------|
| ** **                                        | ** ** | **March 31**                | ** ** |
| ** **                                        | ** ** | **2007**                         | ** ** | **2006** | ** ** |
| **Earnings:**                                     | ** ** | ** **                       | ** ** | ** ** | ** ** |
|                                              |       |                             |       |   |   |
| Income (loss) before  income taxes                |       | $                                | (292       | ) | $ | (1,104 | ) |
| Less: Income from less  than 50% owned investees  |       | —                           |       | 1 |   |
| Add:                                              |       |                             |       |   |   |
| Rent expense  representative of interest (1)      |       | 59                               |       | 49 |   |
| Interest expense  net of capitalized interest (2) |       | 127                              |       | 136 |   |
| Amortization of  debt discount and expense        |       | 5                                |       | 2 |   |
| Amortization of  interest capitalized             |       | 1                                |       | 2 |   |
|                                              |       |                             |       |   |   |
| **Adjusted  earnings**                            |       | $                                | (100       | ) | $ | (916 | ) |
|                                              |       |                             |       |   |   |
| **Fixed charges:**                                | ** ** | ** **                       | ** ** | ** ** | ** ** |
|                                              |       |                             |       |   |   |
| Rent expense  representative of interest (1)      |       | $                                | 59         |   | $ | 49 |   |
| Interest expense net of  capitalized interest (2) |       | 127                              |       | 136 |   |
| Amortization of debt discount  and expense        |       | 5                                |       | 2 |   |
| Capitalized interest                              |       | 3                                |       | 2 |   |
|                                              |       |                             |       |   |   |
| **Fixed  charges**                                |       | $                                | 194        |   | $ | 189 |   |
|                                              |       |                             |       |   |   |
| **Ratio of earnings to fixed charges**            |       | —                           | (3)        | — | (3) |

 

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(1)          Calculated as one-third of rentals, which isconsidered representative of the interest factor.

(2)          Subsequent to its Chapter 11 filing, theCompany recorded post-petition interest expense on pre-petition obligationsonly to the extent it believes the interest will be paid during the bankruptcyproceeding or that it is probable that the interest will be an allowed claim.

(3)          Earnings were inadequate to cover fixedcharges by $294 million and $1.1 billion for the three months ended March 31,2007 and 2006, respectively.

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