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
|------------------------------------------------------------ | ------------------------------------------------------------ | -------------------------- | ---- | ------------------------
|
|Earnings:                                                    |                                                              |                            |      |                         
|Income before income taxes                                   |                                                              | $                          | 191  |                         
|Less: Income from less than 50% owned investees              |                                                              |                            | 18   |                         
|Add:                                                         |                                                              |                            |      |                         
|                                                             | Rent expense representative of interest(1)                   |                            |      | 56                      
|                                                             | Interest expense net of capitalized interest                 |                            |      | 81                      
|                                                             | Interest of mandatorily redeemable preferred security holder |                            |      | 7                       
|                                                             | Amortization of debt discount and expense                    |                            |      | 2                       
|                                                             | Amortization of interest capitalized                         |                            |      | 1                       
|                                                             |                                                              |                            |      |                         
|                                                             | Adjusted earnings                                            |                            | $    | 320                     
|                                                             |                                                              |                            |      |                         
|Fixed charges:                                               |                                                              |                            |      |                         
|Rent expense representative of interest(1)                   |                                                              | $                          | 56   |                         
|Interest expense net of capitalized interest                 |                                                              |                            | 81   |                         
|Interest of mandatorily redeemable preferred security holder |                                                              |                            | 7    |                         
|Amortization of debt discount and expense                    |                                                              |                            | 2    |                         
|Capitalized interest                                         |                                                              |                            | 5    |                         
|                                                             |                                                              |                            |      |                         
|Fixed charges                                                |                                                              | $                          | 151  |                         
|                                                             |                                                              |                            |      |                         
|Ratio of earnings to fixed charges                           |                                                              |                            | 2.12 |                         
|                                                             |                                                              |                            |      |                         

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