**Exhibit 12.1**

 

**Northwest Airlines Corporation**

 

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

 

**(Dollars in millions)**

 
| ** **                                                                    | ** ** | **Three months ended  June 30** | ** ** | **Six months ended  June 30** | ** ** |
|-------------------------------------------------------------------------------|------------|---------------------------------|------------|-------------------------------|------------|
| ** **                                                                    | ** ** | **2005**                        | ** ** | **2004**                      | ** ** | **2005** | ** ** | **2004** | ** ** |
| **Earnings:**                                                                 |       |                            |       |                          |       |   |   |   |   |
|                                                                          |       |                            |       |                          |       |   |   |   |   |
| Income (loss) before income taxes and  cumulative effect of accounting change |       | $                               | (226       | )                             | $          | (175 | ) | $ | (681 | ) | $ | (398 | ) |
| Less: Income (loss) from less than 50%  owned investees                       |       | 1                               |       | 1                             |       | 4 |   | 2 |   |
| Add:                                                                          |       |                            |       |                          |       |   |   |   |   |
| Rent expense representative of interest (1)                                   |       | 75                              |       | 63                            |       | 137 |   | 125 |   |
| Interest expense net of capitalized  interest                                 |       | 151                             |       | 118                           |       | 295 |   | 242 |   |
| Interest of preferred security holder                                         |       | —                          |       | —                        |       | — |   | — |   |
| Amortization of debt discount and expense                                     |       | 8                               |       | 7                             |       | 15 |   | 15 |   |
| Amortization of interest capitalized                                          |       | 2                               |       | 2                             |       | 4 |   | 4 |   |
|                                                                          |       |                            |       |                          |       |   |   |   |   |
| **Adjusted earnings**                                                         |       | $                               | 9          |                          | $          | 14 |   | $ | (234 | ) | $ | (14 | ) |
|                                                                          |       |                            |       |                          |       |   |   |   |   |
| **Fixed charges:**                                                            |       |                            |       |                          |       |   |   |   |   |
|                                                                          |       |                            |       |                          |       |   |   |   |   |
| Rent expense representative of interest (1)                                   |       | $                               | 75         |                          | $          | 63 |   | $ | 137 |   | $ | 125 |   |
| Interest expense net of capitalized  interest                                 |       | 151                             |       | 118                           |       | 295 |   | 242 |   |
| Interest of preferred security holder                                         |       | —                          |       | —                        |       | — |   | — |   |
| Amortization of debt discount and expense                                     |       | 8                               |       | 7                             |       | 15 |   | 15 |   |
| Capitalized interest                                                          |       | 2                               |       | 2                             |       | 4 |   | 4 |   |
|                                                                          |       |                            |       |                          |       |   |   |   |   |
| **Fixed charges**                                                             |       | $                               | 236        |                          | $          | 190 |   | $ | 451 |   | $ | 386 |   |
|                                                                          |       |                            |       |                          |       |   |   |   |   |
| **Ratio of earnings to fixed charges**                                        |       | —                          | (2)        | —                        | (3)        | — | (2) | — | (3) |

 

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**(1)****                      **Calculated asone-third of rentals, which is considered representative of the interestfactor.

 

**(2)****                      **Earnings wereinadequate to cover fixed charges by $227 million and $685 million for thethree and six months ended June 30, 2005, respectively.

 

**(3)****                      **Earnings wereinadequate to cover fixed charges by $176 million and $400 million for thethree and six months ended June 30, 2004, respectively.

 

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